Re: Jump Stop on OCLV Frame

<[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

James Fitch said:

My wife recently got a new Trek OCLV bike, with a triple chain ring. The
front der appears to be correctly adjusted -- it shifts perfectly on the
workstand. However, she's dumped the chain to the inside at least once on
every ride. Today, we had to break the chain to get it unjammed.
Fortunately, I had a spare Wipperman master link with me, which seemed to
work perfectly with the Shimano chain. On my (steel) bike, a jump stop
(http://www.gvtc.com/~ngear/whatis.html) prevents this sort of thing very
effectively. The OCLV frame is so gussetted and irregular near the bottom
bracket, where the jump stop would have to go, that it doesn't appear

that

Quoted message said:

Quoted message said:

any sort of clamp would keep it in place.

Has anyone come up with a way to install a jump stop, or something like

it,

Quoted message said:

Quoted message said:

on an OCLV frame?

-JR

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet

News==----

Quoted message said:

Quoted message said:

http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+

Newsgroups

Quoted message said:

Quoted message said:

----= East and West-Coast Server Farms - Total Privacy via Encryption

=----

Quoted message said:

Dear James,

There's a part from Trek that may help if you don't have it
already:

http://groups.google.co.uk/groups?q=chain+trek+oclv+carl&hl=en&lr=&group=rec.bicycles.tech&scoring=d&selm=cp2v0q%24as17%241%40news3.infoave.net&rnum=2

Quoted message said:

Carl Fogel

Ahhh. Very interesting. Thanks.

-JF

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Quoted message said:

James Fitch said:

My wife recently got a new Trek OCLV bike, with a triple chain
ring. The front der appears to be correctly adjusted -- it shifts
perfectly on the workstand. However, she's dumped the chain to the
inside at least once on every ride. Today, we had to break the
chain to get it unjammed. Fortunately, I had a spare Wipperman
master link with me, which seemed to work perfectly with the
Shimano chain. On my (steel) bike, a jump stop
(http://www.gvtc.com/~ngear/whatis.html) prevents this sort of
thing very effectively. The OCLV frame is so gussetted and
irregular near the bottom bracket, where the jump stop would have
to go, that it doesn't appear that any sort of clamp would keep it
in place.

Has anyone come up with a way to install a jump stop, or something
like it, on an OCLV frame?

Quoted message said:

Dear James,

There's a part from Trek that may help if you don't have it
already:

http://groups.google.co.uk/groups?q=chain+trek+oclv+carl&hl=en&lr=&
group=rec.bicycles.tech&scoring=d&selm=cp2v0q%24as17%241%40news3.in
foave.net&rnum=2

That big washer thingy doesn't stop the chain from jumping off, it just
keeps it from jamming between the chainring and the frame -- a great
idea, but it won't solve the jumping problem. My current Trek has the
washer, along with protruding "tongues" on the inside of the smallest
chainring that overlap the washer, so there's no gap for the chain to
sneak into.

When I first got my Trek, it would frequently throw the chain off to
the inside, despite numerous adjustments by me and the LBS. Finally
the LBS removed a couple of links from the chain, and the problem
disappeared. You might want to have the dealer check that the chain
length is correct.

--
Ray Heindl
(remove the Xs to reply)