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Re: [Healeys] Bent wheel rim

To: Warren Dietz <flyhihealey@hotmail.com>, Healey <healeys@autox.team.net>
Subject: Re: [Healeys] Bent wheel rim
From: Joe and Lenore Armour <sebring@illawarra.hotkey.net.au>
Date: Tue, 26 Jan 2010 19:38:10 +1100
Warren Dietz wrote:

>  Thanks guys. The bashing with a hammer never occurred to me. I thought it
>would have to be straightened by some special machine process. Picked up a
>portable tire changer from Harbor Freight and went at it. After breaking it
>down I whacked many times and it straightened out real good! Wheel is in good
>shape. I'll check trueness and spokes best I can then clean, paint and
>balance.
>
>WD
>67 BJ8
>
>
>
>Warren
>  
>
I have driven wire wheeled Healeys since 1966 and in that time 
personally removed spokes and re-fitted spokes. Also I have had wheels 
custom made that never required weights to balance them because a little 
old man in a leather apron new what he was doing.

The weight of a car on a wire wheel in effect hangs from the top 
quadrant of spokes which are pre-tensioned by the spokes opposite. This 
torquing of the spokes against each other keeps the hub of the wheel in 
the  centre of the rim.  There is are NO  solid items, ie. spokes, in 
the centre of the wheel in compression keeping the wheel round and 
centered. Therefore any minor change of shape to the rim adjacent to the 
spokes will cause them to lose some if not all tension and therefore 
decrease their ability to keep the wheel hub in the centre of the 
rotating wheel. I do not believe the 'hammer it' technique will 
retension the spokes. Tension  can be adjusted if the majority of spokes 
in the quandrant affected and those opposite can be re-tensioned by 
tightening the nipples.  In my experience this is not possible on old 
wheels as rust freezes the thread and the nipples are so thin they 
distort before loosening. A forged type bicycle multi size  dual ended 
spanner will fit and give good grip if the nipples are free to turn.

Good luck,  go slow!

Joe
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