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Derbyshire chassis question

Posted: Fri Aug 09, 2013 7:20 pm
by chad920
Firstly I am not too sure if chassis is an original or copy, or if it's just the swing arm... It's plated up "Derbyshire 92" on the inboard side of the arm.
The front end is 'off set', looking at it, it is 1-2" off set to the outside.......is this usual?
any ideas..?

Re: Derbyshire chassis question

Posted: Fri Aug 09, 2013 9:47 pm
by steve-e
Lee that sounds a bit vague ;) do you mean the wheel isn't central of the yokes or the headstock is offset?
From memory the centreline of the back tyre and front tyre should be within 75mm limits, with the front wheel inside as per a trike.

Re: Derbyshire chassis question

Posted: Fri Aug 09, 2013 10:21 pm
by chad920
Sorry if it was a little vague, wheel is off set to headstock.....

Re: Derbyshire chassis question

Posted: Fri Aug 09, 2013 10:36 pm
by steve-e
I'd expect it to do odd things if the wheel's not in the middle of the line through from the headstock. Like a shopping trolley with a wonky wheel

Re: Derbyshire chassis question

Posted: Mon Aug 19, 2013 12:56 pm
by lovingit
steve-e wrote:I'd expect it to do odd things if the wheel's not in the middle of the line through from the headstock. Like a shopping trolley with a wonky wheel
Thats sidecar racing ;) ;)

Re: Derbyshire chassis question

Posted: Fri Sep 06, 2013 6:49 am
by sidecar 10
I currently have a 1984 gsx1100 outfit that had the front wheel approx. 1/2" off to one side. when I first saw it I said to myself that must be changed, the front wheel must be dead centre or else it will do weird things, like a drunken shopping trolley. I had new rim halves spun up , machined the hub and bingo. The wheel was dead centre. took it to a race meeting and discovered it made not one bit of difference. Very surprising. A mate has an identical chassis and his front wheel is even more offset (to the right) than mine was. I have ridden his and again I say I cannot pick any problem. I previously thought the problem might be pulling up in a straight line. But not so both oufits brake straight as an arrow.