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Path: utzoo!watmath!clyde!burl!we13!ihnp4!inuxc!pur-ee!ecn-ee!tk
From: tk@ecn-ee.UUCP
Newsgroups: net.bicycle
Subject: Re: PROBLEM:  My new chain is skipping.. - (nf)
Message-ID: <1852@pur-ee.UUCP>
Date: Sun, 6-May-84 13:18:22 EDT
Article-I.D.: pur-ee.1852
Posted: Sun May  6 13:18:22 1984
Date-Received: Mon, 7-May-84 01:16:50 EDT
Sender: notes@pur-ee.UUCP
Organization: Electrical Engineering Department , Purdue University
Lines: 32

#R:wateng:-97800:ecn-ee:18200002:000:1411
ecn-ee!tk    May  6 11:57:00 1984


-

The bike shop "know-it-alls" are right this time: when there's  a
discrepancy  in  the  wear  between  the  freewheel and the chain
(usually in the combination you described, i.e.  new  chain,  old
cluster), the often inevitable result is skipping. You claim your
three year old freewheel shows very little wear --  do  you  know
what you're expecting to see? The wear shows up as a concavity on
the side of the freewheel tooth where the chain applies pressure.
You  have  probably  noticed  that  the  problem  is worse on the
smaller sprockets. 

On one hand, three years isn't a bad lifetime  for  a  freewheel,
assuming  that you use your bike regularly. (When I was racing, I
was lucky to get 8 months out  of  the  block  that  I  used  for
training).  On  the  other hand, what was the reason you replaced
the chain to begin with? (if there's  nothing  wrong,  don't  fix
it).  My  guess is  that you use your bike often enough that both
freewheel and chain were ready to be retired. The alternative  to
replacing  the  pair is to get a freewheel with readily available
replacement  sprockets;  this  is  practically   essential   with
expensive  freewheels.  However, I'd look for another shop before
spending $50 or more  for  a  (decent)  6-speed  freewheel;  THAT
sounds  like they're trying to sell you something you don't need.
--------
Tom Kirk
{allegra|decvax|harpo|teklabs|ucbvax}!pur-ee!tk