Re: [CR]Re: Direction of cotters

(Example: Framebuilding:Brazing Technique)

In-Reply-To: <p06240811c1f654178b6c@[10.0.1.12]>
References: <MONKEYFOODt8NI79sCq0000505b@monkeyfood.nt.phred.org> <9F4C3961-53DE-4EE5-98EB-5F0E83F47225@gmail.com>
From: "Julius Naim" <julius.naim@gmail.com>
Subject: Re: [CR]Re: Direction of cotters
Date: Mon, 12 Feb 2007 18:06:52 +0000
To: Sheldon Brown <CaptBike@sheldonbrown.com>
cc: classicrendezvous@bikelist.org

I'm pretty rubbish at picturing this, has anyone got a picture to point me at to help me get it right? On 12 Feb 2007, at 17:31, Sheldon Brown wrote:
> Julius Naim wrote:
>> It doesn't seem to make a huge amount of difference as long as you
>> fit them in opposite directions. I used to always fit them with
>> the pin facing down with the pedal to the front as it looked
>> neater, the last time I fitted them the other way and have noticed
>> a lot more play after a number of hard miles. I believe that this
>> is due to the predominant (driving) force being on the thin end of
>> the cotter
>
> That's false, I'm afraid. This is an error that is often found in
> older repair books/instructions too.
>
> When the cotters are installed correctly (i.e. facing in opposite
> directions) _one_ of the cotters takes the load on its wide end,
> and the other cotter takes the load on its narrow end.
>
> Note that all of the loading on both cotters occurs when you push
> on the left pedal.
>
> Sheldon "Common Mistake" Brown
> +------------------------------------+
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