Looking for a good general starting point for some Shocks and Springs to run a Asphalt Track with 14% banking in turns And 8-10% front and back stretch? also would using the normal sway bar be better or use a bigger one....car is a 83 monte carlo w/ 66 chevelle chassis. Thanks. RJ
1200RF1100LF225RR250LR1-1/16 SWAY BAR52% LEFT52% CROSS6 valve RF5's everywhere elseThe best way to go fast is to document absolutely everything including front end settings, weights, everything.This is a good basic setup. Your banking looks pretty high so you may need to go a bit stiffer.After you get some baseline numbers, repost and Bob Bolles will most likely see it and make some good suggestions.A good move is posting at the CT forum!good luckramey
Ramey Womer #36 SLMCT Technical Contributor
I like those numbers. Is this a leaf spring rear car? And, under your rules, can you run after market upper control arms at the front or do they need to be stock?As with all race cars, the front moment (roll) center location is important. That will mostly determine how well the front will turn. Let me know and I will go from there.Bob
Car is a non-leaf spring! and must be stock control arms. Thanks. RJ
If you like to drive in deep and want to cross groove coming out try a 1500rf 1200lf 250lr 200rr. Also try an 1 1/8th bar set neutral. Also if your allowed to put ballast on the car and you have any near or behind the lr move it as close to the lf. It will help keep the lf planted when the sway bar comes in. Most guys use softer springs than I run and alot of bar and they end up with a cold lf tire. Also I prefer around 49% cross with 49 rear weight . If you have to run stock type shocks use bilstein street stock shocks for your chassis or if you can run regular racing shocks try bilstein: LF 220/120 RF 200/180 LR 230/78 RR 208/72 I do alot of cars like yours locally and have had alot of success with these numbers. Also my cars use hawk brake pads usually ht15 front ht10 in rear. They tend to work really well with a driver who likes to sail it in the corners. B. Ross www.rossautoracing.com 401-256-3894 feel free to contact me anytime.
1200RF1100LF225RR250LR1-1/16 SWAY BAR52% LEFT52% CROSS6 valve RF5's everywhere elseanyone have time to give the basic rundown of what those numbers mean?? I'm new to this stuff and am trying to learn a little. Thanks
The first four numbers are the spring rates for each corner. The rate is specified in pounds per inch. The RF spring would take 1200 lbs to move it one inch. The sway bar size is a little tricky depending on the brand of car and so on. Basically the larger diameter the front bar the more the car will want to push mid-corner. Or, in a good way, a larger front bar will keep a car from being loose. The left and cross percentages are the weight of the car on the two left wheels and the LR and RF respectively. Six valve means the RF shock is relatively stiff and the other three are medium stiff. By installing this stuff then letting us know how the car works we can help you accordingly.Good luck.ramey
Ramey Womer #36 SLMCT Technical Contributor
Just joined this forum. Looks cool and a alot of good information has been posted.I have a question regarding the use of "chains" in the left front suspension. We run an ACT legal chasis. Some of the guys we are racing against have installed chains in the left front to stop the shock rebound. Apparently this improves the grip on the LR. The competitiors are not willing to share the theory or setup (they have found something that works, 3 to 4 tenths per lap).Can anyone offer suggestions of how to install a chain? What length should it be? How do you adjust it? What other chasis changes would one have to make if a chain was installed?The use of chains is new and the track officals have not deemed them illegal.any suggestions or comments would be greatly appreciated.raceready2007
Race Ready, what kind of ACT car are you running? What track are you running?
we run the identical class 85 monte carlo stock sportsman on a well known track in the florida panhandle and we have 15% banks on rough track surface. received this car with 900rf 800lf 1 1/4 bar set at 1" rear springs are 175lr 150rr and car has pushed eve since we raised it up to legal ride height. 52% left side weight. best we can get with low car is 47.5 rear weight. added spring rubber in right front and driver was able to enter with more steering but car still pushes. Just got done doing all of the math for roll couple percent @ 86% front Overturning weight is 530 lbs. total roughly. don't know if this is enough info to get some tips. Just did the math on banking downforce corecction and found out that new wheel rate is 404 for rF FIGUrED IT OUT TO BE a 1200 lb. spring. any help would be awesome. Been off the track fr 2 months because of push and wasting sponsor money. not a guru but i have a few equations i've worked out in the past few weeks. please and thanks.
Thanks Ramey. Appreciate the reply...asking questions for my father who just bought an 86 monte for our local asphalt track. I'll probably have more questions later and don't want to hijack the original posters thread.
we run at the Kawartha Speedway, Fraserville, Ontario, Canada.We run the same rules at the ACT series. The track promoter is the son-in-law of Tom Curly from Thunder Road.An ACT race was run at KS earlier this summer. The guys from our local track had to cut the chains for the race. Their cars were not as competetive. We have not tried the chains,but it is getting to the point that if we don`t, we will be a 3rd or 4th place car each night. If you can`t beat them...I guess you have to join them.Just wondering if anyone has used chains on the left front and if so, what other changes should we make to the car.Raceready2007
In regards to my last post my new phone is 401-723-6877. Brian Ross Ross Engineering
Just curious if you ever found any info on the chain im interested in how to hook something like that up on my car it is a 1973 chevelle ledsled I race at autocity speedway in Clio Mi its a 1/4 / 1/2 mile i run the 1/4 mile track pretty much a stock class. thanks for any info. Jimmy Stratton
Hi Jimmy,Nothing yet of the use of chains. I sure would like to try them.raceready