Bob's Track Friends Chat

[OldAIMGuy]

Hi Bob, I'll be trying out some heavier rear springs on the Pumpkin in a couple of weeks. The car is pretty much neutral in higher speed corners with just a slight "push." The push is more noticable in the tighter, slower corners.

Most of the series drivers have gone to very heavy springs both front and rear. Remember this car has NO Anti-Sway bars - front or rear. So, the only way to stiffen the car's roll is to add spring rate. Most are running 600 to 700# front springs and 450 to 600# springs on the rear. By comparison, my car has the original set of springs that came with the kit, 500# fronts and 350# rears. To me, the car drives and feels very "vintage" with just the right amount of body roll. Apparently most of the series drivers are used to more modern "anti roll" feel and have made gokarts out of their cars with the heavy springs.


Closing on Turn 5 Apex, the tightest corner on the track.

I'm only adding an additional 50# of spring to the rear end. My hope is that it will help balance the car in the slower, tighter turns while not doing anything evil to the higher speed handling in the sweepers. With Coil-Overs it's easy enough to make a change if I'm not happy with the results.

I'll let you know how it goes.

Best regards, Tom