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-   -   need help on car set up(camber) (https://www.rx7club.com/race-car-tech-103/need-help-car-set-up-camber-764319/)

irishrx7 06-16-08 02:46 PM

need help on car set up(camber)
 
right lads this probaly has been asked but i cant find any answers. im in the middle of fiting derin bushings to the car and am trying to figure out a base setting for the camber angles front and rear. the car is used in the time attack series. what sort of camber should i be running? any other info you need let me know. any help would be great:icon_tup:

j9fd3s 06-16-08 05:56 PM

the amount of camber you need, depends on the tires. the best way i know of to get it right is to take tire temps...

if thats not really available, howard coleman recommends -1.2 camber all the way around, at about a 25" right height, from the fender to the ground.

ccanepa50 06-16-08 07:23 PM

wheel diameter changes camber need as does which track you're running, Howard has 18" i think and 10" wide rears, smaller diameter usually = more camber need, his is a street/track car, but the numbers are a good starting place for 18 inchers.......can look at Pettit Racing site for their recomendations as well,

KhanArtisT 06-16-08 07:57 PM

Just for reference (according to HC's thread) I believe the FD suspension gains 3* of negative camber under 2 inches of compression.

irishrx7 06-17-08 01:07 PM

thanks for the reply lads. the car is runing 17 by 10s all round with 255s toyo 888s on the back and 245 on the front.

as for the tire temps. i know how to work out the camber acording to the heat of the inside/middle/outside. but just looking for a base line before i head to the track. :icon_tup:

j9fd3s 06-18-08 07:38 PM


Originally Posted by irishrx7 (Post 8292334)
thanks for the reply lads. the car is runing 17 by 10s all round with 255s toyo 888s on the back and 245 on the front.

as for the tire temps. i know how to work out the camber acording to the heat of the inside/middle/outside. but just looking for a base line before i head to the track. :icon_tup:

r888's are nice!

dgeesaman 06-21-08 05:00 AM

Unless you're running really stiff suspension, I'd start with -2.0 in front and -1.5 or -1.8 in back.

Dave

Mahjik 06-21-08 09:39 AM

I would recommend starting with Pettit Racing's short track setup:

http://pettitracing.com/faq/information.htm

Get a pyrometer and start tuning from there.


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