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Main
Date: 06 Jul 2007 18:37:50
From: Paul Myron Hobson
Subject: 8 in the back, 1 on the front...
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...with down tube or bar-end shifters
My options:
1) Get a bash guard to keep the chainring from derailing towards the
outside. (Do I need a seat tube mounted chain catcher?)
2) Use a part-bin front derailer/shifter with extreme limits set (but
still be able to trim it for highest/lowest gears).
3) Is there a #3?
Which do y'all like better? Also, any guess as to the chainline I'm
looking for?
I'll go ahead and say 'Muchos gracias' for the help!
\\paul
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Date: 07 Jul 2007 12:42:08
From: Qui si parla Campagnolo
Subject: Re: 8 in the back, 1 on the front...
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On Jul 6, 4:37 pm, Paul Myron Hobson <phob...@gatech.edu > wrote:
> ...with down tube or bar-end shifters
> My options:
>
> 1) Get a bash guard to keep the chainring from derailing towards the
> outside. (Do I need a seat tube mounted chain catcher?)
>
> 2) Use a part-bin front derailer/shifter with extreme limits set (but
> still be able to trim it for highest/lowest gears).
>
> 3) Is there a #3?
>
> Which do y'all like better? Also, any guess as to the chainline I'm
> looking for?
>
> I'll go ahead and say 'Muchos gracias' for the help!
>
> \\paul
Just use a FD...
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Date: 07 Jul 2007 03:29:51
From: landotter
Subject: Re: 8 in the back, 1 on the front...
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On Jul 6, 5:37 pm, Paul Myron Hobson <phob...@gatech.edu > wrote:
> ...with down tube or bar-end shifters
> My options:
>
> 1) Get a bash guard to keep the chainring from derailing towards the
> outside. (Do I need a seat tube mounted chain catcher?)
>
> 2) Use a part-bin front derailer/shifter with extreme limits set (but
> still be able to trim it for highest/lowest gears).
>
> 3) Is there a #3?
3. get your chainline bang on and set your rear mech's stop screws
right.
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Date: 06 Jul 2007 20:20:22
From: Nate Knutson
Subject: Re: 8 in the back, 1 on the front...
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On Jul 6, 2:37 pm, Paul Myron Hobson <phob...@gatech.edu > wrote:
> ...with down tube or bar-end shifters
> My options:
>
> 1) Get a bash guard to keep the chainring from derailing towards the
> outside. (Do I need a seat tube mounted chain catcher?)
>
> 2) Use a part-bin front derailer/shifter with extreme limits set (but
> still be able to trim it for highest/lowest gears).
>
> 3) Is there a #3?
>
> Which do y'all like better? Also, any guess as to the chainline I'm
> looking for?
>
> I'll go ahead and say 'Muchos gracias' for the help!
>
> \\paul
for chainline, it's basically determined by what the over-locknut
spacing is, although technically each hub/cassette combo is gonna put
the middle of the cassette in a very very slightly different place. if
you're running a 1-by-whatever setup that makes it absolutely
impossible for the chain to fall off in front (a good idea), then if
it makes sense you can bias the front chainline a bit if you heavily
favor certain gears, although usually this won't make make sense or
make any difference.
there are 2 setups missing from your list. first is this kind of
thing: http://www.peterwhitecycles.com/Cyclo-Cross.htm . they are
somewhat rarely seen but are probably the most functional, elegant
option. i havent done this, but you could probably use a pair of these
(http://www.spotbikes.com/parts/) or one of the similar guards and
some really long chainring bolts (sugino and problem solvers both make
em) to set up your own. you could probably also use some big, worn out
chainrings with the teeth ground off instead of buying guards.
second is chainguides for dh/freeride/4x/etc, which of course i'm only
mentioning for posterity, although they do accomplish the function
we're talking about and would like pretty awesome on a bike with
downtubes $$$
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Date: 07 Jul 2007 11:02:23
From: Kinky Cowboy
Subject: Re: 8 in the back, 1 on the front...
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On Fri, 06 Jul 2007 20:20:22 -0700, Nate Knutson <bikenate@riseup.net >
wrote:
>On Jul 6, 2:37 pm, Paul Myron Hobson <phob...@gatech.edu> wrote:
>> ...with down tube or bar-end shifters
>> My options:
>>
>> 1) Get a bash guard to keep the chainring from derailing towards the
>> outside. (Do I need a seat tube mounted chain catcher?)
>>
>> 2) Use a part-bin front derailer/shifter with extreme limits set (but
>> still be able to trim it for highest/lowest gears).
>>
>> 3) Is there a #3?
>>
>
>second is chainguides for dh/freeride/4x/etc, which of course i'm only
>mentioning for posterity, although they do accomplish the function
>we're talking about and would like pretty awesome on a bike with
>downtubes $$$
It would look a bit mad, but a DH chainguide with two grooved rollers
doesn't need to touch the chain to do it's job, and the old style
Trvativ Hussefelt
http://www.mtbr.com/reviews/Chain_Accessories/product_78635.shtml
might be found cheap on closeout as it's been superceded, doesn't tie
you to just one chainring size like cyclo cross guards do.
Also, get a chainring designed for single use, so it doesn't have
dropped teeth
Kinky Cowboy*
*Batteries not included
May contain traces of nuts
Your milage may vary
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Date: 06 Jul 2007 17:10:58
From: Chris Nelson
Subject: Re: 8 in the back, 1 on the front...
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On Jul 6, 6:37 pm, Paul Myron Hobson <phob...@gatech.edu > wrote:
> ...with down tube or bar-end shifters
> My options:
>
> 1) Get a bash guard to keep the chainring from derailing towards the
> outside. (Do I need a seat tube mounted chain catcher?)
>
> 2) Use a part-bin front derailer/shifter with extreme limits set (but
> still be able to trim it for highest/lowest gears).
>
> 3) Is there a #3?
>
> Which do y'all like better? Also, any guess as to the chainline I'm
> looking for?
>
> I'll go ahead and say 'Muchos gracias' for the help!
>
> \\paul
http://www.go-ride.com/prod_guides.html
Chris
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