Originally posted by cow buster
A bit contradictory message you put up there. U say the car picks up - does that mean the car is running? If it is running how can you tell if the shaft stop moving? If you are holding the car and reving it, and the shaft don't move and your pinions are moving then it means your front and rear diff are not screwed in properly. The manual set up is front diff 1/4 turn and rear 1/2 turn. If your car moves very slowly at high rev then it confirms that your diffs are not screwed in properly. If the standard set up don't work that means your spring is out of whack so you need new springs
I was driving it up and down my street and noticed that even though i was pressing the throttle nothing was happening. so i went over to the car (which had stopped by this time) and started reving it up and thats when i noticed that the pinion and spur gear was moving, but nothing else (shaft, wheels.) I have done rebuilds before and this is the first time it has done this. I also held it up off the ground and it did the same thing. I will take it apart and start from scratch then. thanx for the help.