Don't plan to let the thread die for a while.
I had a dry track just long enough for a couple of tests today. The LRP Shere Comp seems to be working OK now with the addition of a fan on the speed control. Temps were low on the speed control. Traction was not good from a recent rain. I tested the Narrow car with the front shocks. It tuned up with red 10# front MurdockRC non progressive springs. It ran well.
The wide car is dialed in well on all parts of the track now. The only thing I could use is some more forward traction on the last half of the straight. This is a suspension thing. The rear tires are bouncing from bump to bump. This cannot be tuned out with the center spring or side shocks as I have tried.
We mentioned a four-link rear suspension previously on the thread. This suspension is similar to what a late model mustang with a live axle has. Four trailing links. The upper two can be angled inward to control side to side motion of the axle which is coil sprung. This eliminates the need for a Panhard rod or Watts link as there is no real frame at the back to attach these things to. I have worked out this suspension in my mind. The narrow car will be my test mule again, but it will be a wide car with wide rear pod. Reason just below. The links will be about 4 inches long. I will need to make a new bottom plate to pivot the links at the axle in line with the position of the stock links but much longer. I will use two coil over shocks to suspend each side of the axle. Three shocks will not be needed any longer. This has probably been tried before. If so please give us a report. Josh had talked about doing this as well, but he was planning to drive the axle with a belt. Mine will be direct drive like the pan car. The motor will be suspended with the rear axle. I am hoping to get a more supple rear end that has better compliance with the road over the bumps. When I get it assembled part way I'll put up a pic as it may be hard for you to visualize it. This will still conform to pan car rules as it is not an independent suspension and is direct drive.
Here is a link to a late model mustang suspesion that I spoke of. Go near the bottom there are two shematics. The second cutaway style schematic is easier to see. Just below these you can see a Panhard rod diagram and a Watts link diagram complete with movement.
I had another motor bearing die on the narrow pod car with the 4.5 R. The extended pinion is just too hard on the outer bearing with an extended pinion on a Wide pan car with narrow rear pod, even with frequent oiling. That would be 3 bearings that died now. I would avoid this situation with a 4.5 or faster motor by getting a wide pod.