Re: [CR] Crank cotter filing

(Example: Framebuilding:Restoration)

Date: Fri, 14 May 2010 09:47:00 -0700
From: "verktyg" <verktyg@aol.com>
To: info@m-gineering.nl, Classicrendezvous@bikelist.org
References: <000101caf303$85ba21e0$912e65a0$@com> <4BECFEE5.3050303@aol.com> <4BED1556.7000007@m-gineering.nl>
In-Reply-To: <4BED1556.7000007@m-gineering.nl>
Subject: Re: [CR] Crank cotter filing


M-gineering wrote: > I'd be very surprised if it wasn't due to inserting one of the cotters > from the wrong side

Yep, that was it. It's been 30 year since I worked on cottered cranks. Some things are best left forgotten! ;-)

I remember seeing a bike once with the left crank arm installed backwards!

Chas. Colerich Oakland, CA USA
>> verktyg wrote:
>> One other thing that I forgot about the devil's spawn, If the angles
>> on the cotters weren't closely matched and/or the cotter holes in the
>> crank arms were not accurately machined, the cranks might not line up
>> 180° apart.
>>
>> We had a bike come in for service once that had cranks off at least
>> 20°! I can't remember if it was due to mismatched crank arms or what.