Visit The Dirt Forum for More Information

Author Topic:   suspension question
AUS RACING
Member
posted December 08, 2002 05:26 AM
Can anyone tell me what kind of wheel rate would be a good starting point for my 2870lb car. Most of the tracks here in AUS are 1/4 or 1/3 mile. We are currently building a new car & are hoping to make a few worthwhile changes.
Also which brands of shocks are the go over there, there's not a lot of choice for street stocks over here.


Eljojo
Member
posted December 08, 2002 07:33 AM
Hey AUS, It's my opinion that the banking/surface of the track that dictates the spring rate as much as the weight of the car. We run an incredibly high banked 4/10ths and it's good red clay (and generally tacky) 3200lb car with 1800# rf and 1600# lf trips the wire in the mid 15 secs. When I go to a smaller, less banked track, if it's tacky-I'll go with a 1200/1400 set. If it's going to get slick I'll get on down to 800/900# It has a whole lot to do with how you're able to get in--- all the way into the corner-full throttle/burp and set-- to getting out of the gas on the way in and rolling gently back in the gas on the way out. 'Fess up some more info and someone here will be glad to help you out!


Darcy
Member
posted December 08, 2002 08:15 PM
hay AUS what track do you race at in australia and i should be able to help you with set up and what shocks to use see ya


AUS RACING
Member
posted December 08, 2002 09:37 PM
Hey guys, we race around SE Queensland tracks mostly. Most of the tracks are flat to moderate banking, our home track has a hairpin corner.


Eljojo
Member
posted December 09, 2002 05:34 PM
I'd go very light on a flat track. Like a 800 and a 900. If the car rolls up and wants to push, try dropping the static crossweight and see if that helps. What does racing fuel cost in Australia?


AUS RACING
Member
posted December 09, 2002 09:23 PM
av gas & methonal are between $1-$1.50 per litre


AUS RACING
Member
posted December 09, 2002 09:25 PM
av gas & methonal are between $1-$1.50 per litre.
Have you any idea what 800 or 900lb works out to be at the tyre on one of your cars?


Darcy
Member
posted December 09, 2002 10:24 PM
what track AUS RACING do you race at archerfield or toowoomba let me no thanks

[This message has been edited by Darcy (edited December 09, 2002).]

outlawstock17
Member
posted December 10, 2002 06:43 AM
aus, it depends on the geometry of the front suspension. the lower control arm you're using, the distance from the spring bucket to the ball joint and wheel offset also figure into it. a 900 lb. spring may have a wheel rate of 700 lbs. on one car and 750 lbs. on another.

you'll have to experiment with different springs to figure out which ones are right for your car and track. the guys on here are just trying to get you in the ballpark.

hey aus, do you know brad smith from tasmania? if so, tell him outlawstock17 says "g'day mate".

[This message has been edited by outlawstock17 (edited December 10, 2002).]

AUS RACING
Member
posted December 10, 2002 09:31 PM
Hi Darcy,
we race mainly Mother Mountain, Maryborough, Bundaberg, Kingaroy.
At the moment we have 1100 front springs & 350 & 400 rears. The old car was very competitive, but we are hoping to make some improvements with the new car.

Thanks heaps, Gav.


Back to the Archives