I agree, but in IMCA, you can't get away with anything under a 500. It has more to do with a suspension setup in the back than it does just being a soft spring. Tires with more traction, obviously won't need as soft.
Printable View
Hmmmmmm......I wonder why supers are running a 200-225 RF spring rate (stacked of course)
Why arent some of you mod guys doing it?
It can be done, as I have put one on a car already.
Each car will be a little different, so youll have to: 1)remove spring
2)back wedge bolt all the way to the top
3)measure from bottom of wedge bolt plate to bottom of lower spring mount
4)Search the spring mfrs to find 2 spring heights that will fit.
That should be enough info to get yall thinkin what you will need to finish it!
I beleive you will find that you need a little heavier rear springs with your soft front springs. Before you change back to what you currently have try a stiffer compression right front shock if bottems out to quick. Also might have to raise ride height a little.
Is a c/o on the front legal in the mods?
Another tidbit of info; Just think of using the wedge bolt like a c/o.
I have not found any negatives to running a stacked spring setup. Once you get it setup properly , you just set it and forget it.They are not as temperamental as some people say they are.
There has not been many setup inventions that gives as many positives without the negatives.
You get the combined soft rate to get in the corner, and the stiffer bottom spring to get you off.
what mod classes allow more than 1 spring per wheel?
On the car , Where I put the stacked spring, you wouldnt know theres two springs there.Their both the same color and with the spring tucked under the frame you hardly notice it.
My guess is he is using pull bar springs. At least the top one would have to be because its flat on both ends.
It belongs to a customer of mine. This weekend will be the first race with the stacked spring.
I matched the motion ratios with a lm, so I dont expect any problems.
OK gentlemen with race night done and over I can say the soft right front does work and no bump stop on the RF. The car drove great in--thru and off the corner with that said the only problem being able to break the tires loose going down the straight at will.
I'm not sure his driver came with that option!