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Post by yellowshark on May 21, 2009 12:17:36 GMT
Hi Les to the best of my knowledge the 008 and 009 rear roll centre and suspension geometry is identical apart from lightweight driveshaft’s and axles.
On the 008 the kit setting for shims under the camber link are 2mm for asphalt (and 0mm for carpet) - which we use. On the 009 the kit seup is 1mm (makes no differential between asphalt/carpet in the 009 manual). I am wondering why they might have changed this and what the impact is – lower roll centre giving more rear grip?
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Post by lesbaldry on May 21, 2009 13:26:03 GMT
Hi Les to the best of my knowledge the 008 and 009 rear roll centre and suspension geometry is identical apart from lightweight driveshaft’s and axles. On the 008 the kit setting for shims under the camber link are 2mm for asphalt (and 0mm for carpet) - which we use. On the 009 the kit seup is 1mm (makes no differential between asphalt/carpet in the 009 manual). I am wondering why they might have changed this and what the impact is – lower roll centre giving more rear grip? I never really played with this to much Pete as most of my running with the 008 was at our super smooth track  ..I stuck to kit settings here as I found the odd 1mm did'nt have much effect at our track.,I mainly played with the links inboard,I really cou'nt tell you the correct effect I would imagine it may just effect the roll..Ie lower out board keeps the car flat and has less roll ??...lowering the inboard will increase camber roll and should give more grip,depending upon spring and static camber setting..a case for fit and find out I think Pete,its effect may well depend on other factors/ settings. Ok this may help..my findings on theses adjustments "on my set/up car"..please dont ask me how/why front: the more parallel the camber link is to the wish bone can dial off unwanted slow speed steering but sometimes can improve high speed steering Rear: the more declined the camber link is towards the diff the better the low speed tight corner grip. The more parallel to the wishbone can increase high speed grip,help corner speed and make the car feel stable but the rear will snap away very quickly giving no warning. In the past I have read up about this "stuff" and Ive come to no conclusion whats right or wrong...A lot of adjustments/settings I think are very much style of track and grip level dependant...play and find out on the day!! ....Do you remember the day we were both pondering how to increase turn in on your nippers car..we were both a little unsure(different ideas) so you consulted the "book of words" the answer you found dumb struck us both as we both new it would have a detrimental effect  ;D...the book recomended a front roll bar adjustment you ended up altering Akerman  ...I rest my case M lud!! |
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Post by gwesty on May 21, 2009 16:46:23 GMT
hi , the higher the outer ballstud the more positive camber gain . meaning you will get more initial grip until the car rolls through the corner ! pretty much similar to the inside but more noticable .
agree with les on camber link angles :-)
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Post by TryHard on May 22, 2009 7:52:40 GMT
The link position affects two things... as Glenn says, camber change being one, and roll centre the other. This goes for all cars. Adjusting the innner height has the smallest affect on the roll centre position, so I tend to go off on this for adjusting camber change. The outer link position will effect the roll centre more so, and the camber change less so, whilst moving the lower hinge pin height has the biggest (coarsest) affect on the roll centre, and no cmaber change affect. This goes for all cars as well  So 1mm on the outer hub will affect both the roll centre (lower it), and the camber change... now it's one of the changes that I really don't play with much, it's a set and forget on the 416... then again, so are most options  Cheers Ed |
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..I stuck to kit settings here as I found the odd 1mm did'nt have much effect at our track.,I mainly played with the links inboard,I really cou'nt tell you the correct effect I would imagine it may just effect the roll..Ie lower out board keeps the car flat and has less roll ??...lowering the inboard will increase camber roll and should give more grip,depending upon spring and static camber setting..a case for fit and find out I think Pete,its effect may well depend on other factors/ settings.
;D...the book recomended a front roll bar adjustment you ended up altering Akerman 
