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Main
Date: 08 Jun 2007 02:20:45
From: cycledogg
Subject: TT chainrings - what set to use?
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Hello,
I am currently setting up a TT specific bike and would like to know
what most riders use for the chainring set. 55/42 or 56/44 ?
Cheers,
Rick in Tennessee
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Date: 17 Jun 2007 15:50:13
From: ronaldo_jeremiah
Subject: Re: TT chainrings - what set to use?
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On Jun 14, 1:31 am, rechungREMOVET...@gmail.com wrote:
> On Jun 14, 6:02 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
>
>
>
> > I give
> > Kunich's story a 9/10 on the plausibilimeter.
>
> Dumbass:
>
> Kunich's story was that he was turning a 53-15 at 180 rpm.
Which is plausible, after you apply a Kunich Korrection, as was
illustrated.
-rj
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Date: 16 Jun 2007 02:10:38
From: Bret
Subject: Re: TT chainrings - what set to use?
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On Jun 14, 12:45 am, Ryan Cousineau <rcous...@sfu.ca > wrote:
> In article <1181802717.462708.212...@x35g2000prf.googlegroups.com>,
>
> rechungREMOVET...@gmail.com wrote:
> > On Jun 14, 6:02 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
>
> > > I give
> > > Kunich's story a 9/10 on the plausibilimeter.
>
> > Dumbass:
>
> > Kunich's story was that he was turning a 53-15 at 180 rpm.
>
> Okay, fair enough. But once we return to reality-based rev ranges, a
> 53-15 ends up being a very plausible sprinting gear for low-cat racing.
>
> Kunich surely has no idea what his actual cadence was in those sprints
> (though he might have recorded a max speed once or twice), so he made a
> rather absurd guess. (50 mph, as if...)
>
> But it's pretty likely he was right about which gear he used, and that
> led to the fact that you wouldn't even have to turn that gear especially
> quickly to sprint quite credibly in that cat level.
You're being rather non-skeptical Ryan. I wouldn't believe that TK had
won a field sprint even if he presented a results sheet signed by Les
Earnest himself, provided a URL to Dave Bailey's race report of said
race, and had put the NCNCA finish line video on YouTube.
Bret
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Date: 16 Jun 2007 22:26:24
From: Tom Kunich
Subject: Re: TT chainrings - what set to use?
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"Bret" <bret.wade@gmail.com > wrote in message
news:1181959838.529935.293310@g37g2000prf.googlegroups.com...
> On Jun 14, 12:45 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
>> In article <1181802717.462708.212...@x35g2000prf.googlegroups.com>,
>>
>> rechungREMOVET...@gmail.com wrote:
>> > On Jun 14, 6:02 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
>>
>> > > I give
>> > > Kunich's story a 9/10 on the plausibilimeter.
>>
>> > Dumbass:
>>
>> > Kunich's story was that he was turning a 53-15 at 180 rpm.
>>
>> Okay, fair enough. But once we return to reality-based rev ranges, a
>> 53-15 ends up being a very plausible sprinting gear for low-cat racing.
>>
>> Kunich surely has no idea what his actual cadence was in those sprints
>> (though he might have recorded a max speed once or twice), so he made a
>> rather absurd guess. (50 mph, as if...)
>>
>> But it's pretty likely he was right about which gear he used, and that
>> led to the fact that you wouldn't even have to turn that gear especially
>> quickly to sprint quite credibly in that cat level.
>
> You're being rather non-skeptical Ryan. I wouldn't believe that TK had
> won a field sprint even if he presented a results sheet signed by Les
> Earnest himself
Are you so stupid that you can't even look back and see what is being
discussed?
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Date: 15 Jun 2007 19:37:17
From: Howard Kveck
Subject: Re: TT chainrings - what set to use?
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In article <1181959838.529935.293310@g37g2000prf.googlegroups.com >,
Bret <bret.wade@gmail.com > wrote:
> On Jun 14, 12:45 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
> > In article <1181802717.462708.212...@x35g2000prf.googlegroups.com>,
> >
> > rechungREMOVET...@gmail.com wrote:
> > > On Jun 14, 6:02 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
> >
> > > > I give
> > > > Kunich's story a 9/10 on the plausibilimeter.
> >
> > > Dumbass:
> >
> > > Kunich's story was that he was turning a 53-15 at 180 rpm.
> >
> > Okay, fair enough. But once we return to reality-based rev ranges, a
> > 53-15 ends up being a very plausible sprinting gear for low-cat racing.
> >
> > Kunich surely has no idea what his actual cadence was in those sprints
> > (though he might have recorded a max speed once or twice), so he made a
> > rather absurd guess. (50 mph, as if...)
> >
> > But it's pretty likely he was right about which gear he used, and that
> > led to the fact that you wouldn't even have to turn that gear especially
> > quickly to sprint quite credibly in that cat level.
>
> You're being rather non-skeptical Ryan. I wouldn't believe that TK had
> won a field sprint even if he presented a results sheet signed by Les
> Earnest himself, provided a URL to Dave Bailey's race report of said
> race, and had put the NCNCA finish line video on YouTube.
I can't believe that you'd be so doubtful of that claim. What on earth coud be the
reason for that????
--
tanx,
Howard
Never take a tenant with a monkey.
remove YOUR SHOES to reply, ok?
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Date: 14 Jun 2007 15:04:49
From: amit.ghosh@gmail.com
Subject: Re: TT chainrings - what set to use?
|
On Jun 14, 12:02 am, Ryan Cousineau <rcous...@sfu.ca > wrote:
> In article <L1Qbi.562041$2Q1.138...@newsfe16.lga>,
> "Carl Sundquist" <carl...@cox.net> wrote:
>
>
>
> > "Ryan Cousineau" <rcous...@sfu.ca> wrote in message
> >news:rcousine-05BF31.22115412062007@news.telus.net...
> > > In article <_EIbi.3095$a84....@newsfe21.lga>,
> > > "Carl Sundquist" <carl...@cox.net> wrote:
>
> > >> "Tom Kunich" <cyclintom@yahoo. com> wrote in message
> > >>news:Y9Fbi.16269$296.1400@newsread4.news.pas.earthlink.net...
>
> > >> > Here's another item - I could actually sprint faster in a 53-15 than
> > >> > others who were using top gear. I could spin to a limit, spin to a
> > >> > limit
> > >> > above that and then spin to a limit above that. Pretty surprising I'll
> > >> > tell you. I'll bet that I was turning a track-sprinter-like 180 rpm by
> > >> > that time.
>
> > >> That would be 57.4 mph
>
> > >>http://sheldonbrown.com/gears/
>
> > >> Even using a pretty normal sprinter gear of 48x14, track sprinters aren't
> > >> going much above 160 rpm.
>
> > > Ironically, this makes Kunich's story rather more plausible, in that it
> > > suggests that even at a leisurely 120 rpm he'd be doing north of 35 mph
> > > in that gear.
>
> > > 120 rpm and 35 mph would be a pretty good Cat 5 sprint,
>
> > I screwed up: I used 53x13 instead of 53x15. A 53x15 @ 180 rpm is 49.8 mph,
> > or as you look at it, 33.2 mph @ 120 rpm
>
> Dumbass: come to think of it, I would assume a 50 km/h sprint would make
> a lot of sense in a Cat 5 race, which is right around that speed. I give
> Kunich's story a 9/10 on the plausibilimeter.
>
> Environmental conditions necessary for calibrating the plausibilimeter:
> a half glass of wine. As in, who leaves a half glass of wine in the
> bottle??
>
> Oh right, it was me,
dumbass,
i would do standing start sprints in 53x15 and hit 60 kph, i figure
that's about 120 rpm.
i actually won a low cat race once sprinting in 53x15 and my max.
speed to the line was 56 kph.
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Date: 14 Jun 2007 00:19:34
From: Robert Chung
Subject: Re: TT chainrings - what set to use?
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On Jun 14, 8:45 am, Ryan Cousineau <rcous...@sfu.ca > wrote:
> But it's pretty likely he was right about which gear he used, and that
> led to the fact that you wouldn't even have to turn that gear especially
> quickly to sprint quite credibly in that cat level.
Here's a plot of one guy's sprints:
http://anonymous.coward.free.fr/wattage/components/kraig_sprint.png
You can see peak power maxed out at around 100 rpm.
Here's a detail plot of a different guy's sprint at the end of a P12
crit:
http://anonymous.coward.free.fr/wattage/components/ahm-fitchburg-sprint.png
The numbers show the evolution of the sprint in seconds (from the last
turn before the finish line). Max power was a tad less than a
kilowatt, and rpm maxed out close to 100.
First rider is a tad heavier but both are in the ballpark of 150
pounds. I could figure out the max speeds and, thus, the gears used
but I'd have to dig up the original data files and I don't want to.
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Date: 13 Jun 2007 23:31:57
From:
Subject: Re: TT chainrings - what set to use?
|
On Jun 14, 6:02 am, Ryan Cousineau <rcous...@sfu.ca > wrote:
>
> I give
> Kunich's story a 9/10 on the plausibilimeter.
Dumbass:
Kunich's story was that he was turning a 53-15 at 180 rpm.
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Date: 14 Jun 2007 06:45:47
From: Ryan Cousineau
Subject: Re: TT chainrings - what set to use?
|
In article <1181802717.462708.212640@x35g2000prf.googlegroups.com >,
rechungREMOVETHIS@gmail.com wrote:
> On Jun 14, 6:02 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
> >
> > I give
> > Kunich's story a 9/10 on the plausibilimeter.
>
> Dumbass:
>
> Kunich's story was that he was turning a 53-15 at 180 rpm.
Okay, fair enough. But once we return to reality-based rev ranges, a
53-15 ends up being a very plausible sprinting gear for low-cat racing.
Kunich surely has no idea what his actual cadence was in those sprints
(though he might have recorded a max speed once or twice), so he made a
rather absurd guess. (50 mph, as if...)
But it's pretty likely he was right about which gear he used, and that
led to the fact that you wouldn't even have to turn that gear especially
quickly to sprint quite credibly in that cat level.
--
Ryan Cousineau rcousine@sfu.ca http://www.wiredcola.com/
"I don't want kids who are thinking about going into mathematics
to think that they have to take drugs to succeed." -Paul Erdos
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Date: 15 Jun 2007 00:51:33
From: Tom Kunich
Subject: Re: TT chainrings - what set to use?
|
"Ryan Cousineau" <rcousine@sfu.ca > wrote in message
news:rcousine-61F995.23454613062007@news.telus.net...
> In article <1181802717.462708.212640@x35g2000prf.googlegroups.com>,
> rechungREMOVETHIS@gmail.com wrote:
>
>> On Jun 14, 6:02 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
>> >
>> > I give
>> > Kunich's story a 9/10 on the plausibilimeter.
>>
>> Dumbass:
>>
>> Kunich's story was that he was turning a 53-15 at 180 rpm.
>
> Okay, fair enough. But once we return to reality-based rev ranges, a
> 53-15 ends up being a very plausible sprinting gear for low-cat racing.
>
> Kunich surely has no idea what his actual cadence was in those sprints
> (though he might have recorded a max speed once or twice), so he made a
> rather absurd guess. (50 mph, as if...)
Hmm, maybe THAT'S why I said, "I'll bet that I was turning a
track-sprinter-like 180 rpm by that time."
> But it's pretty likely he was right about which gear he used, and that
> led to the fact that you wouldn't even have to turn that gear especially
> quickly to sprint quite credibly in that cat level.
My sprint cadence was MUCH higher than everyone else's. On my first "top
out" I was spining about what everyone else was. Then I could spin out twice
more to hit my peak. I do know that when I did that in a much lower gear
(probably a 53-19 but maybe a 21) I would hit over 32 mph.
The problem was that I didn't like the scrum in the finishing sprint and
would back out. So I'd generally only test myself on the intermediate
sprints and those didn't have a lot of guys busting the slip stream.
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Date: 14 Jun 2007 10:42:39
From: RonSonic
Subject: Re: TT chainrings - what set to use?
|
On Thu, 14 Jun 2007 06:45:47 GMT, Ryan Cousineau <rcousine@sfu.ca > wrote:
>In article <1181802717.462708.212640@x35g2000prf.googlegroups.com>,
> rechungREMOVETHIS@gmail.com wrote:
>
>> On Jun 14, 6:02 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
>> >
>> > I give
>> > Kunich's story a 9/10 on the plausibilimeter.
>>
>> Dumbass:
>>
>> Kunich's story was that he was turning a 53-15 at 180 rpm.
>
>Okay, fair enough. But once we return to reality-based rev ranges, a
>53-15 ends up being a very plausible sprinting gear for low-cat racing.
>
>Kunich surely has no idea what his actual cadence was in those sprints
>(though he might have recorded a max speed once or twice), so he made a
>rather absurd guess. (50 mph, as if...)
But did he get both wheels off the ground at the same time?
Ron
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Date: 14 Jun 2007 15:02:34
From: William Asher
Subject: Re: TT chainrings - what set to use?
|
RonSonic <ronsonic@tampabay.rr.com > wrote in
news:etk273hnonrq4uj7oa05mhvts8lmr5pk0j@4ax.com:
> On Thu, 14 Jun 2007 06:45:47 GMT, Ryan Cousineau <rcousine@sfu.ca>
> wrote:
>
>>
>>Okay, fair enough. But once we return to reality-based rev ranges, a
>>53-15 ends up being a very plausible sprinting gear for low-cat
>>racing.
>
> But did he get both wheels off the ground at the same time?
I'm more interested in the length of the skidmark and what he ran into
when he popped off the rollers.
--
Bill Asher
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Date: 11 Jun 2007 22:45:27
From:
Subject: Re: TT chainrings - what set to use?
|
On Jun 11, 9:13 pm, "Tom Kunich" <cyclintom@yahoo. com > wrote:
> <carlfo...@comcast.net> wrote in message
>
> news:1181604061.155504.215120@q19g2000prn.googlegroups.com...
>
> > On Jun 11, 12:41 pm, cyclin...@gmail.com wrote:
>
> >> Ahem, exactly the same ratios: 55:12 and 53:11
>
> > 55/12 = 4.58333 . . .
> > 53/11 = 4.81818 . . .
>
> Whoops. Do you suppose that changes things so that a 55-12 is a good idea?
Dear Tom,
Absolutely not!
On newsgroups that pride themselves on independent thinking and sneer
at sheep, the same conclusion is always reached by independent
coincidence that "good" is reserved for 52x12, while "perfect" is
expressed by 53x12.
To paraphrase Bierce, the immunity from swift and awful death of those
who venture beyond 53/12 is one of the most striking proofs of God's
mercy to those that hate Him.
As this handy table explains, anything beyond perfection cannot
possibly be good:
52/12 = 4.33333 . . . good
53/12 = 4.41666 . . . perfect
55/12 = 4.58333 . . . less evil
52/11 = 4.72727 . . . evil
53/11 = 4.81818 . . . more evil
55/11 = 5.00000 . . . blasphemy
All users of 55x11 are, to borrow another expression from Bierce, of
evil disposition, having assumed a bestial gearing to gratify a
bestial appetite, but some Tour riders, transformed by drugs, are as
humane as is consistent with an acquired taste for human flesh.
Cheers,
Carl Fogel
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Date: 12 Jun 2007 20:10:34
From: Simon Brooke
Subject: Re: TT chainrings - what set to use?
|
in message <1181627127.506172.94460@x35g2000prf.googlegroups.com >,
carlfogel@comcast.net (' carlfogel@comcast.net') wrote:
> To paraphrase Bierce, the immunity from swift and awful death of those
> who venture beyond 53/12 is one of the most striking proofs of God's
> mercy to those that hate Him.
>
> As this handy table explains, anything beyond perfection cannot
> possibly be good:
>
> 52/12 = 4.33333 . . . good
> 53/12 = 4.41666 . . . perfect
> 55/12 = 4.58333 . . . less evil
> 52/11 = 4.72727 . . . evil
> 53/11 = 4.81818 . . . more evil
> 55/11 = 5.00000 . . . blasphemy
I suppose you merely sneer at 53x13?
--
simon@jasmine.org.uk (Simon Brooke) http://www.jasmine.org.uk/~simon/
Morning had broken, and there was nothing we could do but wait
patiently for the RAC to arrive.
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Date: 12 Jun 2007 22:32:24
From: Tom Kunich
Subject: Re: TT chainrings - what set to use?
|
"Simon Brooke" <simon@jasmine.org.uk > wrote in message
news:bm73k4-kdv.ln1@gododdin.internal.jasmine.org.uk...
> in message <1181627127.506172.94460@x35g2000prf.googlegroups.com>,
> carlfogel@comcast.net (' carlfogel@comcast.net') wrote:
>
>> To paraphrase Bierce, the immunity from swift and awful death of those
>> who venture beyond 53/12 is one of the most striking proofs of God's
>> mercy to those that hate Him.
>>
>> As this handy table explains, anything beyond perfection cannot
>> possibly be good:
>>
>> 52/12 = 4.33333 . . . good
>> 53/12 = 4.41666 . . . perfect
>> 55/12 = 4.58333 . . . less evil
>> 52/11 = 4.72727 . . . evil
>> 53/11 = 4.81818 . . . more evil
>> 55/11 = 5.00000 . . . blasphemy
>
> I suppose you merely sneer at 53x13?
One of the things that really surprised me was that when I first started
racing I was in the 53-13 all the time. After the second year I rarely went
above a 53-15 and rode a great deal faster.
I've found pretty much the same thing since I've changed to Compact. I
actually ride faster with the 50 since I have an assortment of gears that I
can turn over. Of course if I was still racing, and could spin like then,
I'd be a great deal faster still.
Here's another item - I could actually sprint faster in a 53-15 than others
who were using top gear. I could spin to a limit, spin to a limit above that
and then spin to a limit above that. Pretty surprising I'll tell you. I'll
bet that I was turning a track-sprinter-like 180 rpm by that time.
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Date: 12 Jun 2007 21:30:14
From: Carl Sundquist
Subject: Re: TT chainrings - what set to use?
|
"Tom Kunich" <cyclintom@yahoo. com > wrote in message
news:Y9Fbi.16269$296.1400@newsread4.news.pas.earthlink.net...
>
> Here's another item - I could actually sprint faster in a 53-15 than
> others who were using top gear. I could spin to a limit, spin to a limit
> above that and then spin to a limit above that. Pretty surprising I'll
> tell you. I'll bet that I was turning a track-sprinter-like 180 rpm by
> that time.
That would be 57.4 mph
http://sheldonbrown.com/gears/
Even using a pretty normal sprinter gear of 48x14, track sprinters aren't
going much above 160 rpm.
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Date: 13 Jun 2007 05:11:57
From: Ryan Cousineau
Subject: Re: TT chainrings - what set to use?
|
In article <_EIbi.3095$a84.599@newsfe21.lga >,
"Carl Sundquist" <carlsun@cox.net > wrote:
> "Tom Kunich" <cyclintom@yahoo. com> wrote in message
> news:Y9Fbi.16269$296.1400@newsread4.news.pas.earthlink.net...
> >
> > Here's another item - I could actually sprint faster in a 53-15 than
> > others who were using top gear. I could spin to a limit, spin to a limit
> > above that and then spin to a limit above that. Pretty surprising I'll
> > tell you. I'll bet that I was turning a track-sprinter-like 180 rpm by
> > that time.
>
> That would be 57.4 mph
>
> http://sheldonbrown.com/gears/
>
> Even using a pretty normal sprinter gear of 48x14, track sprinters aren't
> going much above 160 rpm.
Ironically, this makes Kunich's story rather more plausible, in that it
suggests that even at a leisurely 120 rpm he'd be doing north of 35 mph
in that gear.
120 rpm and 35 mph would be a pretty good Cat 5 sprint,
--
Ryan Cousineau rcousine@sfu.ca http://www.wiredcola.com/
"I don't want kids who are thinking about going into mathematics
to think that they have to take drugs to succeed." -Paul Erdos
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Date: 15 Jun 2007 00:42:15
From: Tom Kunich
Subject: Re: TT chainrings - what set to use?
|
"Ryan Cousineau" <rcousine@sfu.ca > wrote in message
news:rcousine-05BF31.22115412062007@news.telus.net...
> In article <_EIbi.3095$a84.599@newsfe21.lga>,
> "Carl Sundquist" <carlsun@cox.net> wrote:
>
>> "Tom Kunich" <cyclintom@yahoo. com> wrote in message
>> news:Y9Fbi.16269$296.1400@newsread4.news.pas.earthlink.net...
>> >
>> > Here's another item - I could actually sprint faster in a 53-15 than
>> > others who were using top gear. I could spin to a limit, spin to a
>> > limit
>> > above that and then spin to a limit above that. Pretty surprising I'll
>> > tell you. I'll bet that I was turning a track-sprinter-like 180 rpm by
>> > that time.
>>
>> That would be 57.4 mph
>>
>> http://sheldonbrown.com/gears/
>>
>> Even using a pretty normal sprinter gear of 48x14, track sprinters aren't
>> going much above 160 rpm.
>
> Ironically, this makes Kunich's story rather more plausible, in that it
> suggests that even at a leisurely 120 rpm he'd be doing north of 35 mph
> in that gear.
>
> 120 rpm and 35 mph would be a pretty good Cat 5 sprint,
I never saw north of 36 mph in a sprint BUT I didn't look down too often at
those speeds in a tight group.
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Date: 13 Jun 2007 05:54:30
From: Carl Sundquist
Subject: Re: TT chainrings - what set to use?
|
"Ryan Cousineau" <rcousine@sfu.ca > wrote in message
news:rcousine-05BF31.22115412062007@news.telus.net...
> In article <_EIbi.3095$a84.599@newsfe21.lga>,
> "Carl Sundquist" <carlsun@cox.net> wrote:
>
>> "Tom Kunich" <cyclintom@yahoo. com> wrote in message
>> news:Y9Fbi.16269$296.1400@newsread4.news.pas.earthlink.net...
>> >
>> > Here's another item - I could actually sprint faster in a 53-15 than
>> > others who were using top gear. I could spin to a limit, spin to a
>> > limit
>> > above that and then spin to a limit above that. Pretty surprising I'll
>> > tell you. I'll bet that I was turning a track-sprinter-like 180 rpm by
>> > that time.
>>
>> That would be 57.4 mph
>>
>> http://sheldonbrown.com/gears/
>>
>> Even using a pretty normal sprinter gear of 48x14, track sprinters aren't
>> going much above 160 rpm.
>
> Ironically, this makes Kunich's story rather more plausible, in that it
> suggests that even at a leisurely 120 rpm he'd be doing north of 35 mph
> in that gear.
>
> 120 rpm and 35 mph would be a pretty good Cat 5 sprint,
I screwed up: I used 53x13 instead of 53x15. A 53x15 @ 180 rpm is 49.8 mph,
or as you look at it, 33.2 mph @ 120 rpm
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Date: 14 Jun 2007 04:02:25
From: Ryan Cousineau
Subject: Re: TT chainrings - what set to use?
|
In article <L1Qbi.562041$2Q1.138523@newsfe16.lga >,
"Carl Sundquist" <carlsun@cox.net > wrote:
> "Ryan Cousineau" <rcousine@sfu.ca> wrote in message
> news:rcousine-05BF31.22115412062007@news.telus.net...
> > In article <_EIbi.3095$a84.599@newsfe21.lga>,
> > "Carl Sundquist" <carlsun@cox.net> wrote:
> >
> >> "Tom Kunich" <cyclintom@yahoo. com> wrote in message
> >> news:Y9Fbi.16269$296.1400@newsread4.news.pas.earthlink.net...
> >> >
> >> > Here's another item - I could actually sprint faster in a 53-15 than
> >> > others who were using top gear. I could spin to a limit, spin to a
> >> > limit
> >> > above that and then spin to a limit above that. Pretty surprising I'll
> >> > tell you. I'll bet that I was turning a track-sprinter-like 180 rpm by
> >> > that time.
> >>
> >> That would be 57.4 mph
> >>
> >> http://sheldonbrown.com/gears/
> >>
> >> Even using a pretty normal sprinter gear of 48x14, track sprinters aren't
> >> going much above 160 rpm.
> >
> > Ironically, this makes Kunich's story rather more plausible, in that it
> > suggests that even at a leisurely 120 rpm he'd be doing north of 35 mph
> > in that gear.
> >
> > 120 rpm and 35 mph would be a pretty good Cat 5 sprint,
>
> I screwed up: I used 53x13 instead of 53x15. A 53x15 @ 180 rpm is 49.8 mph,
> or as you look at it, 33.2 mph @ 120 rpm
Dumbass: come to think of it, I would assume a 50 km/h sprint would make
a lot of sense in a Cat 5 race, which is right around that speed. I give
Kunich's story a 9/10 on the plausibilimeter.
Environmental conditions necessary for calibrating the plausibilimeter:
a half glass of wine. As in, who leaves a half glass of wine in the
bottle??
Oh right, it was me,
--
Ryan Cousineau rcousine@sfu.ca http://www.wiredcola.com/
"I don't want kids who are thinking about going into mathematics
to think that they have to take drugs to succeed." -Paul Erdos
|
| | | | | | | | |
Date: 14 Jun 2007 10:41:24
From: RonSonic
Subject: Re: TT chainrings - what set to use?
|
On Thu, 14 Jun 2007 04:02:25 GMT, Ryan Cousineau <rcousine@sfu.ca > wrote:
>In article <L1Qbi.562041$2Q1.138523@newsfe16.lga>,
> "Carl Sundquist" <carlsun@cox.net> wrote:
>
>> "Ryan Cousineau" <rcousine@sfu.ca> wrote in message
>> news:rcousine-05BF31.22115412062007@news.telus.net...
>> > In article <_EIbi.3095$a84.599@newsfe21.lga>,
>> > "Carl Sundquist" <carlsun@cox.net> wrote:
>> >
>> >> "Tom Kunich" <cyclintom@yahoo. com> wrote in message
>> >> news:Y9Fbi.16269$296.1400@newsread4.news.pas.earthlink.net...
>> >> >
>> >> > Here's another item - I could actually sprint faster in a 53-15 than
>> >> > others who were using top gear. I could spin to a limit, spin to a
>> >> > limit
>> >> > above that and then spin to a limit above that. Pretty surprising I'll
>> >> > tell you. I'll bet that I was turning a track-sprinter-like 180 rpm by
>> >> > that time.
>> >>
>> >> That would be 57.4 mph
>> >>
>> >> http://sheldonbrown.com/gears/
>> >>
>> >> Even using a pretty normal sprinter gear of 48x14, track sprinters aren't
>> >> going much above 160 rpm.
>> >
>> > Ironically, this makes Kunich's story rather more plausible, in that it
>> > suggests that even at a leisurely 120 rpm he'd be doing north of 35 mph
>> > in that gear.
>> >
>> > 120 rpm and 35 mph would be a pretty good Cat 5 sprint,
>>
>> I screwed up: I used 53x13 instead of 53x15. A 53x15 @ 180 rpm is 49.8 mph,
>> or as you look at it, 33.2 mph @ 120 rpm
>
>Dumbass: come to think of it, I would assume a 50 km/h sprint would make
>a lot of sense in a Cat 5 race, which is right around that speed. I give
>Kunich's story a 9/10 on the plausibilimeter.
I'm supposing that the plausibilimeter is calibrated in Akabs which are equal to
1/Baka.
>Environmental conditions necessary for calibrating the plausibilimeter:
>a half glass of wine. As in, who leaves a half glass of wine in the
>bottle??
>
>Oh right, it was me,
Oh, that's a different issue. Just so you aren't the one leaving partial beers
around.
Ron
|
| | | | | | | | | |
Date: 14 Jun 2007 20:25:05
From: Donald Munro
Subject: Re: TT chainrings - what set to use?
|
RonSonic wrote:
> Oh, that's a different issue. Just so you aren't the one leaving partial beers
> around.
I'm not sure if the theory of partial beers equations has been studied but
apparently those mathematician dopers have derived theories related to
other beer behaviours:
http://science.qj.net/Beer-foam-equation-leads-to-advancement-in-materials-engineering/pg/49/aid/90581
|
| | | | | | | | | |
Date: 14 Jun 2007 12:14:59
From: Curtis L. Russell
Subject: Re: TT chainrings - what set to use?
|
"RonSonic" <ronsonic@tampabay.rr.com > wrote in message
news:9lk2731kr55ondtv5ggm8dad84r5dv2qjr@4ax.com...
> On Thu, 14 Jun 2007 04:02:25 GMT, Ryan Cousineau <rcousine@sfu.ca> wrote:
...
> I'm supposing that the plausibilimeter is calibrated in Akabs which are
> equal to
> 1/Baka.
>
>>Environmental conditions necessary for calibrating the plausibilimeter:
>>a half glass of wine. As in, who leaves a half glass of wine in the
>>bottle??
>>
>>Oh right, it was me,
>
> Oh, that's a different issue. Just so you aren't the one leaving partial
> beers
> around.
>
> Ron
I do that - at picnics. Not quite as good as a Coke to draw bees and yellow
jackets, but once they're there, after a while they just drop down beside
the beer and talk about how they used to the fastest one in the park.
After a while, they're too damn heavy to fly any more anyway. Safer all the
way around.
--
Curtis L. Russell
Odenton, MD (USA)
Just someone on two wheels...
|
| |
Date: 11 Jun 2007 16:21:01
From:
Subject: Re: TT chainrings - what set to use?
|
On Jun 11, 12:41 pm, cyclin...@gmail.com wrote:
> On Jun 11, 11:29 am, "joseph.santanie...@gmail.com"
>
> <joseph.santanie...@gmail.com> wrote:
> > On Jun 11, 8:07 pm, cyclin...@gmail.com wrote:
>
> > > On Jun 8, 12:21 pm, "joseph.santanie...@gmail.com"
>
> > > <joseph.santanie...@gmail.com> wrote:
> > > > On Jun 8, 11:20 am, cycledogg <cycled...@hotmail.com> wrote:
>
> > > > > Hello,
> > > > > I am currently setting up a TT specific bike and would like to know
> > > > > what most riders use for the chainring set. 55/42 or 56/44 ?
> > > > > Cheers,
> > > > > Rick in Tennessee
>
> > > > I like using a 53/39 and 11-21 so the ratios are close, and the gaps
> > > > are the same as my road bike so I'm used to them. The gap between say
> > > > 53x14 or 15 is different that the gap between 55x14 or 15. This slight
> > > > difference could be disconcerting. And the likelyhood of needing
> > > > bigger than 53x11 is low. And with a 53x21 I don't need the small ring
> > > > which is a hassle to shift back and forth from. With a 55x21 I'd
> > > > probably have to drop down to the small ring sometimes. If it is a TT
> > > > that has steep enough hills that I'd need to use the 39, I'd a) not be
> > > > participating, and b) using my road bike.
>
> > > Come on Joe - the likelihood of anyone below a Cat 1 being able to
> > > even turn over a 55-12 is pretty remote.
>
> > Who said anything about 55x12?
>
> > Joseph
>
> Ahem, exactly the same ratios: 55:12 and 53:11
Dear Cyc,
55/12 = 4.58333 . . .
53/11 = 4.81818 . . .
Cheers,
Carl Fogel
|
| | |
Date: 12 Jun 2007 03:13:18
From: Tom Kunich
Subject: Re: TT chainrings - what set to use?
|
<carlfogel@comcast.net > wrote in message
news:1181604061.155504.215120@q19g2000prn.googlegroups.com...
> On Jun 11, 12:41 pm, cyclin...@gmail.com wrote:
>>
>> Ahem, exactly the same ratios: 55:12 and 53:11
>
> 55/12 = 4.58333 . . .
> 53/11 = 4.81818 . . .
Whoops. Do you suppose that changes things so that a 55-12 is a good idea?
|
| |
Date: 11 Jun 2007 12:49:11
From: joseph.santaniello@gmail.com
Subject: Re: TT chainrings - what set to use?
|
On Jun 11, 8:41 pm, cyclin...@gmail.com wrote:
> On Jun 11, 11:29 am, "joseph.santanie...@gmail.com"
>
>
>
> <joseph.santanie...@gmail.com> wrote:
> > On Jun 11, 8:07 pm, cyclin...@gmail.com wrote:
>
> > > On Jun 8, 12:21 pm, "joseph.santanie...@gmail.com"
>
> > > <joseph.santanie...@gmail.com> wrote:
> > > > On Jun 8, 11:20 am, cycledogg <cycled...@hotmail.com> wrote:
>
> > > > > Hello,
> > > > > I am currently setting up a TT specific bike and would like to know
> > > > > what most riders use for the chainring set. 55/42 or 56/44 ?
> > > > > Cheers,
> > > > > Rick in Tennessee
>
> > > > I like using a 53/39 and 11-21 so the ratios are close, and the gaps
> > > > are the same as my road bike so I'm used to them. The gap between say
> > > > 53x14 or 15 is different that the gap between 55x14 or 15. This slight
> > > > difference could be disconcerting. And the likelyhood of needing
> > > > bigger than 53x11 is low. And with a 53x21 I don't need the small ring
> > > > which is a hassle to shift back and forth from. With a 55x21 I'd
> > > > probably have to drop down to the small ring sometimes. If it is a TT
> > > > that has steep enough hills that I'd need to use the 39, I'd a) not be
> > > > participating, and b) using my road bike.
>
> > > Come on Joe - the likelihood of anyone below a Cat 1 being able to
> > > even turn over a 55-12 is pretty remote.
>
> > Who said anything about 55x12?
>
> > Joseph- Hide quoted text -
>
> Ahem, exactly the same ratios: 55:12 and 53:11
>
> There were some really good Cat 1's up at Copperopolis this year and
> Levi just cruised away from them like they were standing still. This
> is significant to those who are trying to compare gear ratios between
> Indurain and Indurain-wannabees-but-never-could.
I have a 53x11 that has been used with a big tailwind on my TT bike.
Not exactly the cog that is going to wear out first, but nice to have
for just such an occasion. Anything larger would never get used, no
matter what sort of tailwind came along. But I think we agree,
anything bigger than a 53x11 is pointless, and the 53x11 itself is on
the verge of pointless.
Joseph
|
| | |
Date: 11 Jun 2007 18:53:04
From: John Forrest Tomlinson
Subject: Re: TT chainrings - what set to use?
|
On Mon, 11 Jun 2007 12:49:11 -0700, "joseph.santaniello@gmail.com"
<joseph.santaniello@gmail.com > wrote:
>But I think we agree,
>anything bigger than a 53x11 is pointless, and the 53x11 itself is on
>the verge of pointless.
What about tailwinds? What about long shallow downhills?
--
JT
****************************
Remove "remove" to reply
Visit http://www.jt10000.com
****************************
|
| | | |
Date: 11 Jun 2007 23:47:08
From: Tom Kunich
Subject: Re: TT chainrings - what set to use?
|
"John Forrest Tomlinson" <usenetremove@jt10000.com > wrote in message
news:shkr6313u6p73c977llg316jrbnlqltbqd@4ax.com...
> On Mon, 11 Jun 2007 12:49:11 -0700, "joseph.santaniello@gmail.com"
> <joseph.santaniello@gmail.com> wrote:
>
>>But I think we agree,
>>anything bigger than a 53x11 is pointless, and the 53x11 itself is on
>>the verge of pointless.
>
> What about tailwinds? What about long shallow downhills?
You can make up a WHOLE LOT more time with closer and lower ratios than with
higher ratios that are used once in a year if that often. And you could
always carry an 11 tooth cassette with you for those vanishingly small
occasions.
Look at it this way: It is easier to use closer ratios to increase your
intermediate speeds than to use your highest gear to increase top speed.
This is, of course, because drag increases more rapidly at higher speeds.
But just consider speed alone without increasing the ratio of drag; let's
exaggerate the speed increases so that the numbers look more impressive:
Let's say that you can use closer ratios to increase your speed in the
rolling part of the course by 1/6th more.
That means that you increase your average from:
18 mph to 21 mph for a slow average or from 22 mph to 25.66 mph for the fast
average.
All else being equal in a 25 mile TT you would improve your time almost 12
minutes with the change in velocity from the lower speeds and 9.5 minutes at
the higher and MUCH more impressive sounding higher averages.
But in fact, most TT guys CAN improve their speeds more like the lower group
there and the most advanced riders can improve their speeds only perhaps
half of that as a general rule.
|
| |
Date: 11 Jun 2007 11:41:25
From:
Subject: Re: TT chainrings - what set to use?
|
On Jun 11, 11:29 am, "joseph.santanie...@gmail.com"
<joseph.santanie...@gmail.com > wrote:
> On Jun 11, 8:07 pm, cyclin...@gmail.com wrote:
>
>
>
>
>
> > On Jun 8, 12:21 pm, "joseph.santanie...@gmail.com"
>
> > <joseph.santanie...@gmail.com> wrote:
> > > On Jun 8, 11:20 am, cycledogg <cycled...@hotmail.com> wrote:
>
> > > > Hello,
> > > > I am currently setting up a TT specific bike and would like to know
> > > > what most riders use for the chainring set. 55/42 or 56/44 ?
> > > > Cheers,
> > > > Rick in Tennessee
>
> > > I like using a 53/39 and 11-21 so the ratios are close, and the gaps
> > > are the same as my road bike so I'm used to them. The gap between say
> > > 53x14 or 15 is different that the gap between 55x14 or 15. This slight
> > > difference could be disconcerting. And the likelyhood of needing
> > > bigger than 53x11 is low. And with a 53x21 I don't need the small ring
> > > which is a hassle to shift back and forth from. With a 55x21 I'd
> > > probably have to drop down to the small ring sometimes. If it is a TT
> > > that has steep enough hills that I'd need to use the 39, I'd a) not be
> > > participating, and b) using my road bike.
>
> > Come on Joe - the likelihood of anyone below a Cat 1 being able to
> > even turn over a 55-12 is pretty remote.
>
> Who said anything about 55x12?
>
> Joseph- Hide quoted text -
Ahem, exactly the same ratios: 55:12 and 53:11
There were some really good Cat 1's up at Copperopolis this year and
Levi just cruised away from them like they were standing still. This
is significant to those who are trying to compare gear ratios between
Indurain and Indurain-wannabees-but-never-could.
|
| |
Date: 11 Jun 2007 11:29:25
From: joseph.santaniello@gmail.com
Subject: Re: TT chainrings - what set to use?
|
On Jun 11, 8:07 pm, cyclin...@gmail.com wrote:
> On Jun 8, 12:21 pm, "joseph.santanie...@gmail.com"
>
>
>
> <joseph.santanie...@gmail.com> wrote:
> > On Jun 8, 11:20 am, cycledogg <cycled...@hotmail.com> wrote:
>
> > > Hello,
> > > I am currently setting up a TT specific bike and would like to know
> > > what most riders use for the chainring set. 55/42 or 56/44 ?
> > > Cheers,
> > > Rick in Tennessee
>
> > I like using a 53/39 and 11-21 so the ratios are close, and the gaps
> > are the same as my road bike so I'm used to them. The gap between say
> > 53x14 or 15 is different that the gap between 55x14 or 15. This slight
> > difference could be disconcerting. And the likelyhood of needing
> > bigger than 53x11 is low. And with a 53x21 I don't need the small ring
> > which is a hassle to shift back and forth from. With a 55x21 I'd
> > probably have to drop down to the small ring sometimes. If it is a TT
> > that has steep enough hills that I'd need to use the 39, I'd a) not be
> > participating, and b) using my road bike.
>
> Come on Joe - the likelihood of anyone below a Cat 1 being able to
> even turn over a 55-12 is pretty remote.
Who said anything about 55x12?
Joseph
|
| |
Date: 11 Jun 2007 11:07:36
From:
Subject: Re: TT chainrings - what set to use?
|
On Jun 8, 12:21 pm, "joseph.santanie...@gmail.com"
<joseph.santanie...@gmail.com > wrote:
> On Jun 8, 11:20 am, cycledogg <cycled...@hotmail.com> wrote:
>
> > Hello,
> > I am currently setting up a TT specific bike and would like to know
> > what most riders use for the chainring set. 55/42 or 56/44 ?
> > Cheers,
> > Rick in Tennessee
>
> I like using a 53/39 and 11-21 so the ratios are close, and the gaps
> are the same as my road bike so I'm used to them. The gap between say
> 53x14 or 15 is different that the gap between 55x14 or 15. This slight
> difference could be disconcerting. And the likelyhood of needing
> bigger than 53x11 is low. And with a 53x21 I don't need the small ring
> which is a hassle to shift back and forth from. With a 55x21 I'd
> probably have to drop down to the small ring sometimes. If it is a TT
> that has steep enough hills that I'd need to use the 39, I'd a) not be
> participating, and b) using my road bike.
Come on Joe - the likelihood of anyone below a Cat 1 being able to
even turn over a 55-12 is pretty remote.
|
| | |
Date: 17 Jun 2007 14:35:17
From: Bret
Subject: Re: TT chainrings - what set to use?
|
On Jun 16, 4:26 pm, "Tom Kunich" <cyclintom@yahoo. com > wrote:
> "Bret" <bret.w...@gmail.com> wrote in message
>
> news:1181959838.529935.293310@g37g2000prf.googlegroups.com...
>
>
>
> > On Jun 14, 12:45 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
> >> In article <1181802717.462708.212...@x35g2000prf.googlegroups.com>,
>
> >> rechungREMOVET...@gmail.com wrote:
> >> > On Jun 14, 6:02 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
>
> >> > > I give
> >> > > Kunich's story a 9/10 on the plausibilimeter.
>
> >> > Dumbass:
>
> >> > Kunich's story was that he was turning a 53-15 at 180 rpm.
>
> >> Okay, fair enough. But once we return to reality-based rev ranges, a
> >> 53-15 ends up being a very plausible sprinting gear for low-cat racing.
>
> >> Kunich surely has no idea what his actual cadence was in those sprints
> >> (though he might have recorded a max speed once or twice), so he made a
> >> rather absurd guess. (50 mph, as if...)
>
> >> But it's pretty likely he was right about which gear he used, and that
> >> led to the fact that you wouldn't even have to turn that gear especially
> >> quickly to sprint quite credibly in that cat level.
>
> > You're being rather non-skeptical Ryan. I wouldn't believe that TK had
> > won a field sprint even if he presented a results sheet signed by Les
> > Earnest himself
>
> Are you so stupid that you can't even look back and see what is being
> discussed?
Is this really a thread where you want to encourage people to look
back? 50 mph sprints in a 53-15? You claimed some sprinting prowess
with your unorthodox style. What was your best race result?
Bret
|
| | |
Date: 16 Jun 2007 05:19:11
From: Bret
Subject: Re: TT chainrings - what set to use?
|
On Jun 15, 8:37 pm, Howard Kveck <YOURhow...@h-SHOESbomb.com > wrote:
> In article <1181959838.529935.293...@g37g2000prf.googlegroups.com>,
>
>
>
> Bret <bret.w...@gmail.com> wrote:
> > On Jun 14, 12:45 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
> > > In article <1181802717.462708.212...@x35g2000prf.googlegroups.com>,
>
> > > rechungREMOVET...@gmail.com wrote:
> > > > On Jun 14, 6:02 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
>
> > > > > I give
> > > > > Kunich's story a 9/10 on the plausibilimeter.
>
> > > > Dumbass:
>
> > > > Kunich's story was that he was turning a 53-15 at 180 rpm.
>
> > > Okay, fair enough. But once we return to reality-based rev ranges, a
> > > 53-15 ends up being a very plausible sprinting gear for low-cat racing.
>
> > > Kunich surely has no idea what his actual cadence was in those sprints
> > > (though he might have recorded a max speed once or twice), so he made a
> > > rather absurd guess. (50 mph, as if...)
>
> > > But it's pretty likely he was right about which gear he used, and that
> > > led to the fact that you wouldn't even have to turn that gear especially
> > > quickly to sprint quite credibly in that cat level.
>
> > You're being rather non-skeptical Ryan. I wouldn't believe that TK had
> > won a field sprint even if he presented a results sheet signed by Les
> > Earnest himself, provided a URL to Dave Bailey's race report of said
> > race, and had put the NCNCA finish line video on YouTube.
>
> I can't believe that you'd be so doubtful of that claim. What on earth coud be the
> reason for that????
I've done a little bit of sprinting myself and my experiences are at
odds with his posts
on the subject. My experience is in line with what Chung posted. Peak
power is around 100-110 RPM. The gear selection comes down to choosing
the largest gear that you can jump with adequately. If you choose well
you peak out at around 110 RPM with plenty of torque to go with it.
You get a gap and then try to hold it. If someone comes up beside you,
you try to dig a little deeper but no miracles are likely to occur. I
've never heard of or experienced this notion of breaking through
several spinning barriers before reaching peak power. There simply
isn't any time to let your sprint develop. It has to be there from the
beginning.
Bret
|
| | | |
Date: 16 Jun 2007 19:46:05
From: Howard Kveck
Subject: Re: TT chainrings - what set to use?
|
In article <1181971151.296363.98740@i38g2000prf.googlegroups.com >,
Bret <bret.wade@gmail.com > wrote:
> On Jun 15, 8:37 pm, Howard Kveck <YOURhow...@h-SHOESbomb.com> wrote:
> > In article <1181959838.529935.293...@g37g2000prf.googlegroups.com>,
> > Bret <bret.w...@gmail.com> wrote:
> > > On Jun 14, 12:45 am, Ryan Cousineau <rcous...@sfu.ca> wrote:
> > I can't believe that you'd be so doubtful of that claim. What on earth
> > coud be the reason for that????
>
> I've done a little bit of sprinting myself and my experiences are at
> odds with his posts on the subject. My experience is in line with what
> Chung posted. Peak power is around 100-110 RPM. The gear selection comes
> down to choosing the largest gear that you can jump with adequately. If
> you choose well you peak out at around 110 RPM with plenty of torque to
> go with it. You get a gap and then try to hold it. If someone comes up
> beside you, you try to dig a little deeper but no miracles are likely to
> occur. I 've never heard of or experienced this notion of breaking through
> several spinning barriers before reaching peak power. There simply
> isn't any time to let your sprint develop. It has to be there from the
> beginning.
That's pretty much what I've found and what I've observed. I've never seen anyone
do what he described - it sounded like a blender. Chop! Mix!! Blend!!! Frappe!!!!
WIIIIIIINNNNNN!!!!!!!!!!!!!! I've seen Fred Markham wind it up pretty tight at the
track but that was always in a move where he was going off the front ar chasing down
someone else who already was off the front. In sprints, he never seemed to use super
high cadence. Perhaps TK was trying to do the Razor...
--
tanx,
Howard
Never take a tenant with a monkey.
remove YOUR SHOES to reply, ok?
|
| |
Date: 11 Jun 2007 11:06:20
From:
Subject: Re: TT chainrings - what set to use?
|
On Jun 8, 2:20 am, cycledogg <cycled...@hotmail.com > wrote:
> Hello,
> I am currently setting up a TT specific bike and would like to know
> what most riders use for the chainring set. 55/42 or 56/44 ?
That's a really great troll Rick. I'll bet that at least two or three
people here actually believe that was real.
I once knew a guy who could turn a 55. But of course he turned it at
20 mph only until his knees failed him at 35.
|
| | |
Date: 12 Jun 2007 20:06:26
From: Simon Brooke
Subject: Re: TT chainrings - what set to use?
|
in message <1181585180.569089.88560@q69g2000hsb.googlegroups.com >,
cyclintom@gmail.com (' cyclintom@gmail.com') wrote:
> On Jun 8, 2:20 am, cycledogg <cycled...@hotmail.com> wrote:
>> Hello,
>> I am currently setting up a TT specific bike and would like to know
>> what most riders use for the chainring set. 55/42 or 56/44 ?
>
> That's a really great troll Rick. I'll bet that at least two or three
> people here actually believe that was real.
>
> I once knew a guy who could turn a 55. But of course he turned it at
> 20 mph only until his knees failed him at 35.
Uh-huh. Graeme Obree timetrials (still) in these parts using quite enormous
singlespeed gears. Consequently all the wannabe hard men around think that
enormous gears are the way to go. And there's friends of mine with
knackered knees in their forties. Graeme is a phenomenon. He /can/ do it -
but he can do it because he's turning his enormous gears at the same speed
mere mortals turn normal size ones.
--
simon@jasmine.org.uk (Simon Brooke) http://www.jasmine.org.uk/~simon/
;; killing [afghan
|
| |
Date: 08 Jun 2007 12:21:21
From: joseph.santaniello@gmail.com
Subject: Re: TT chainrings - what set to use?
|
On Jun 8, 11:20 am, cycledogg <cycled...@hotmail.com > wrote:
> Hello,
> I am currently setting up a TT specific bike and would like to know
> what most riders use for the chainring set. 55/42 or 56/44 ?
> Cheers,
> Rick in Tennessee
I like using a 53/39 and 11-21 so the ratios are close, and the gaps
are the same as my road bike so I'm used to them. The gap between say
53x14 or 15 is different that the gap between 55x14 or 15. This slight
difference could be disconcerting. And the likelyhood of needing
bigger than 53x11 is low. And with a 53x21 I don't need the small ring
which is a hassle to shift back and forth from. With a 55x21 I'd
probably have to drop down to the small ring sometimes. If it is a TT
that has steep enough hills that I'd need to use the 39, I'd a) not be
participating, and b) using my road bike.
Joseph
|
| |
Date: 08 Jun 2007 10:31:04
From: rick-paulos@uiowa.edu
Subject: Re: TT chainrings - what set to use?
|
On Jun 8, 4:20 am, cycledogg <cycled...@hotmail.com > wrote:
> Hello,
> I am currently setting up a TT specific bike and would like to know
> what most riders use for the chainring set. 55/42 or 56/44 ?
> Cheers,
> Rick in Tennessee
Old School, 52/49 with a straight block. A 2 or 3 tooth difference
in the chainrings fills in the gaps better. You won't need the low
gears so why leave out cogs you might want in the range you need.
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Date: 08 Jun 2007 11:30:17
From: Simon Brooke
Subject: Re: TT chainrings - what set to use?
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in message <1181161437.164604.130100@i13g2000prf.googlegroups.com >,
cycledogg ('cycledogg@hotmail.com') wrote:
> Hello,
> I am currently setting up a TT specific bike and would like to know
> what most riders use for the chainring set. 55/42 or 56/44 ?
It depends on the strength and natural cadence of the rider. Is his
performance currently limited by lack of gears? Does he spend most of his
time at present in his highest possible gear?
--
simon@jasmine.org.uk (Simon Brooke) http://www.jasmine.org.uk/~simon/
Error 1109: There is no message for this error
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Date: 08 Jun 2007 07:53:56
From: Fred Fredburger
Subject: Re: TT chainrings - what set to use?
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Simon Brooke wrote:
> in message <1181161437.164604.130100@i13g2000prf.googlegroups.com>,
> cycledogg ('cycledogg@hotmail.com') wrote:
>
>> Hello,
>> I am currently setting up a TT specific bike and would like to know
>> what most riders use for the chainring set. 55/42 or 56/44 ?
>
> It depends on the strength and natural cadence of the rider. Is his
> performance currently limited by lack of gears? Does he spend most of his
> time at present in his highest possible gear?
>
OK, I guess that makes sense. I've been wondering about one more thing:
What size condom should I use? They come in such a bewildering array of
sizes. What size does everyone else use?
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Date: 08 Jun 2007 19:42:20
From: Donald Munro
Subject: Re: TT chainrings - what set to use?
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Simon Brooke wrote:
>> It depends on the strength and natural cadence of the rider. Is his
>> performance currently limited by lack of gears? Does he spend most of his
>> time at present in his highest possible gear?
Fred Fredburger wrote:
> OK, I guess that makes sense. I've been wondering about one more thing:
>
> What size condom should I use? They come in such a bewildering array of
> sizes. What size does everyone else use?
Depends on whether your performance is currently limited. Bear in mind
that everybody else is probably doping.
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Date: 08 Jun 2007 11:17:26
From: Curtis L. Russell
Subject: Re: TT chainrings - what set to use?
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"Fred Fredburger" <FredFredburger@WhereAreTheNachos.huh > wrote in message
news:FNadnUaS_vSg8vTbnZ2dnUVZ_rjinZ2d@comcast.com...
> Simon Brooke wrote:
>> in message <1181161437.164604.130100@i13g2000prf.googlegroups.com>,
>> cycledogg ('cycledogg@hotmail.com') wrote:
>>
>>> Hello,
>>> I am currently setting up a TT specific bike and would like to know
>>> what most riders use for the chainring set. 55/42 or 56/44 ?
>>
>> It depends on the strength and natural cadence of the rider. Is his
>> performance currently limited by lack of gears? Does he spend most of his
>> time at present in his highest possible gear?
>>
>
> OK, I guess that makes sense. I've been wondering about one more thing:
>
> What size condom should I use? They come in such a bewildering array of
> sizes. What size does everyone else use?
Generally, if you don't mind them falling off, it doesn't make any
difference. Go with the biggest size possible and then you have at least one
shot at impressing her - however short a period of time that may be.
--
Curtis L. Russell
Odenton, MD (USA)
Just someone on two wheels...
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Date: 08 Jun 2007 23:07:28
From: Charles
Subject: Re: TT chainrings - what set to use?
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"Curtis L. Russell" <curtis@the-md-russells.org > wrote in message
news:JcqdnSKO8-9e7_TbnZ2dnUVZ_uuqnZ2d@giganews.com...
> "Fred Fredburger" <FredFredburger@WhereAreTheNachos.huh> wrote in message
> news:FNadnUaS_vSg8vTbnZ2dnUVZ_rjinZ2d@comcast.com...
> > Simon Brooke wrote:
> >> in message <1181161437.164604.130100@i13g2000prf.googlegroups.com>,
> >> cycledogg ('cycledogg@hotmail.com') wrote:
> >>
> >>> Hello,
> >>> I am currently setting up a TT specific bike and would like to know
> >>> what most riders use for the chainring set. 55/42 or 56/44 ?
> >>
> >> It depends on the strength and natural cadence of the rider. Is his
> >> performance currently limited by lack of gears? Does he spend most of
his
> >> time at present in his highest possible gear?
> >>
> >
> > OK, I guess that makes sense. I've been wondering about one more thing:
> >
> > What size condom should I use? They come in such a bewildering array of
> > sizes. What size does everyone else use?
>
> Generally, if you don't mind them falling off, it doesn't make any
> difference. Go with the biggest size possible and then you have at least
one
> shot at impressing her - however short a period of time that may be.
>
>
What will she say ... My what a big ah condom you have.
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