Ill go back to page 48 or so and continue reading through the thread but has anyone uploaded a video showing a rm 2wd buggy with balanced springs? will drop test cause it to bottom out front and back together? but there is more inertia on the back ...??

I understand the reason for balancing springs first is to make sure all four springs are supporting the cog equally and will have equal balance front to rear same as left to right. That why pressing on the cog will cause the entire chassis to compress equally on a balanced car.

I have a very interesting effect happen on my track. An effect which can prove porpoising. I have a backyard naturally rain packed red dirt. I cleaned it out from weeds and plants etc about 7 months ago. I run on it very frequently almost daily if the weather permits; now on my straight slowly but surely it started to show dips in a weird constant distances that I couldnt previously understand why. it seems after my 180 degree turn accelerating into the straight causes the rear to porpoise constantly for the whole straight that now finally it shows the areas in which the weight is pressing on the rear tires has been dug down much greater then when the weight is shifting porpoising up. and now i have humps instead of a flat straight. enough to cause the back to hop and eventually dig more causing the effect to increase exponentially. now my track's dirt needs to be spread evenly and packed again, its almost undrivable because the rear end is heavily bouncing.

This proves that an unbalanced car, although not visible, will porpoise on the track and not have equal pressure on all tires causing instability, proving a balanced car is much more planted and stable.

Thought its interesting to share.