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Date: 02 Sep 2007 18:33:26
From: meb
Subject: 3 speed Sunway Freewheel threading on Z-bike
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One of my folders is a Z-bike and the 3 speed freewheel, a Sunwa
16/20/24, started snagging while coasting today. If this fails, I'l
probably upgrade to whatever freewheel I can fit in there-if th
threading is ok (dropout spacing appears ample to expand to 5 or more)
Anyone know if that freewheel uses standard english threads
--
meb
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Date: 03 Sep 2007 18:21:48
From: JeffWills
Subject: Re: 3 speed Sunway Freewheel threading on Z-bike
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On Sep 2, 12:33 am, meb <meb.2w9...@no-mx.forums.cyclingforums.com >
wrote:
> One of my folders is a Z-bike and the 3 speed freewheel, a Sunway
> 16/20/24, started snagging while coasting today. If this fails, I'll
> probably upgrade to whatever freewheel I can fit in there-if the
> threading is ok (dropout spacing appears ample to expand to 5 or more).
> Anyone know if that freewheel uses standard english threads?
>
> --
> meb
That's the way to bet. From this photo:
http://nordicgroup.us/fold/zbike.jpg
I'd guess that the hub has the freewheel on one side and a threaded
band brake on the other. Probably standard english threads (1.37 x
24tpi) on both sides.
Jeff
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Date: 06 Sep 2007 14:15:36
From: meb
Subject: Re: 3 speed Sunway Freewheel threading on Z-bike
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JeffWills Wrote:
> On Sep 2, 12:33 am, meb <meb.2w9...@no-mx.forums.cyclingforums.com>
> wrote:
> > One of my folders is a Z-bike and the 3 speed freewheel, a Sunway
> > 16/20/24, started snagging while coasting today. If this fails
> I'll
> > probably upgrade to whatever freewheel I can fit in there-if the
> > threading is ok (dropout spacing appears ample to expand to 5 o
> more).
> > Anyone know if that freewheel uses standard english threads?
> >
> > --
> > meb
>
> That's the way to bet. From this photo:
> http://nordicgroup.us/fold/zbike.jpg
> I'd guess that the hub has the freewheel on one side and a threaded
> band brake on the other. Probably standard english threads (1.37 x
> 24tpi) on both sides.
>
> Jeff
Yep on the freewheel one side brake on the other.
If the freewheel puller works with a Shimano puller, it'd be worth th
try to see in advance
--
meb
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Date: 02 Sep 2007 10:22:28
From: Nate Knutson
Subject: Re: 3 speed Sunway Freewheel threading on Z-bike
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On Sep 2, 1:33 am, meb <meb.2w9...@no-mx.forums.cyclingforums.com >
wrote:
> One of my folders is a Z-bike and the 3 speed freewheel, a Sunway
> 16/20/24, started snagging while coasting today. If this fails, I'll
> probably upgrade to whatever freewheel I can fit in there-if the
> threading is ok (dropout spacing appears ample to expand to 5 or more).
> Anyone know if that freewheel uses standard english threads?
>
> --
> meb
no idea, but sounds like maybe something you don't want to deal with.
try lubricating/unsticking the freewheel by getting tri flow or other
penetrating oil in?
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Date: 06 Sep 2007 14:16:18
From: meb
Subject: Re: 3 speed Sunway Freewheel threading on Z-bike
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Nate Knutson Wrote:
> On Sep 2, 1:33 am, meb <meb.2w9...@no-mx.forums.cyclingforums.com>
> wrote:
> > One of my folders is a Z-bike and the 3 speed freewheel, a Sunway
> > 16/20/24, started snagging while coasting today. If this fails
> I'll
> > probably upgrade to whatever freewheel I can fit in there-if the
> > threading is ok (dropout spacing appears ample to expand to 5 o
> more).
> > Anyone know if that freewheel uses standard english threads?
> >
> > --
> > meb
>
> no idea, but sounds like maybe something you don't want to deal with.
> try lubricating/unsticking the freewheel by getting tri flow or other
> penetrating oil in?
I lubed it as it got progressively worse and that seems to hav
restored it.
Thank
--
meb
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Date: 04 Sep 2007 10:03:21
From: meb
Subject: Re: 3 speed Sunway Freewheel threading on Z-bike
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Nate Knutson Wrote:
> On Sep 2, 1:33 am, meb <meb.2w9...@no-mx.forums.cyclingforums.com>
> wrote:
> > One of my folders is a Z-bike and the 3 speed freewheel, a Sunway
> > 16/20/24, started snagging while coasting today. If this fails,
> I'll
> > probably upgrade to whatever freewheel I can fit in there-if the
> > threading is ok (dropout spacing appears ample to expand to 5 or
> more).
> > Anyone know if that freewheel uses standard english threads?
> >
> > --
> > meb
>
> no idea, but sounds like maybe something you don't want to deal with.
> try lubricating/unsticking the freewheel by getting tri flow or other
> penetrating oil in?
I think its something to consider changing even if the lubing
works-I'll be continuing experimenting with some unusual ideas on this
bike, particularly since it otherwise is one of my least practical
bikes and therefore an excellent candidate for hacking away with.
Changing freewheel is something I never considered before this possible
failure appear, but it might solve some of the ratio problems I have
(29-44 gear inches currently).
--
meb
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