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Author: Subject: adjusting castor
jabbahutt

posted on 6/6/08 at 10:15 AM Reply With Quote
adjusting castor

Morning all

Just trying to sort out the front wheel toe/camber and self centering. I've been reading the threads about toe out for SVA and that castor is the greatest force for self centreing.

Would I be correct that turning the mushroom insert adjusts the castor? apparently the more castor the better the self centring.

So for max castor with the MK set up should the offset hole in the mushroom point forwards as per the original recommended set up?

Thanks for any help
Nigel






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mookaloid

posted on 6/6/08 at 10:39 AM Reply With Quote
Description
Description






"That thing you're thinking - it wont be that."


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jabbahutt

posted on 6/6/08 at 10:48 AM Reply With Quote
none for me thanks, it's dinner time in half an hour

Some assistance about the postion of the mushroom though would be great






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mookaloid

posted on 6/6/08 at 10:52 AM Reply With Quote
The holes in the mushrooms go towards the front

Cheers

Mark





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mad-butcher

posted on 6/6/08 at 11:19 AM Reply With Quote
What time do you get up of a morning, and have you got a completely flat surface to work off, I work nights at menzies distribution (other side of motorway to cheshire oaks
Tony

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nitram38

posted on 6/6/08 at 11:30 AM Reply With Quote
Do a search!
There is only one way to get the castor right for centering and that is remake your top wishbones.






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thepest

posted on 6/6/08 at 12:20 PM Reply With Quote
Yep... I ended up with 2 sets of top wishbones
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mad-butcher

posted on 6/6/08 at 01:27 PM Reply With Quote
Yes we are all aware of the short fall in design of the 7 were stuck with it and have to work our way around it and make the best of what we've got, mine handles like a dream on the track and I wouldn't change it, but mr SVA man knows best
tony

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britishtrident

posted on 6/6/08 at 04:28 PM Reply With Quote
You can use the offset mushroom to adjust the king pin inclination but not the caster.

Put the hole towards the inside and for a given camber angle king pin inclination is increased.

Put the hole to the outside and king pin inclination after the camber is adjusted will be decreased.

Increased kingpin inclination will increase the self centrin effect BUT use with care.





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snapper

posted on 6/6/08 at 05:12 PM Reply With Quote
Pumping up the front tyres to a much higher pressure than you would normally use say 30 to 35psi instead of 18 to 20 will also help.





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James

posted on 6/6/08 at 05:27 PM Reply With Quote
quote:
Originally posted by britishtrident
You can use the offset mushroom to adjust the king pin inclination but not the caster.



Seconded!

Nigel,

Setting your top wishbone as far back relative to the bottom wishbone is the way to maximise caster.

HTH,
James





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