I have a brand new RTR jammin and I just got it broke in and now when I hit the throttle the front tires spin out of control and the backs seem to not do much. Is there a way to adjust the rear diff or do I need to change the oil in the diff. The rear wheels spin but the front seems like its getting all the power. The crappy manual does not tell you anything. Thanks

center diff buddy. You need some thicker fluid in the center. I am not keen on the jammin, but something like 20-30K should do it. I am sure someone else will chime in and say something about it.

No no not 20-30k then you'd have pretty much 4 wheel drive... if your bashing then it would be good though. Most ofnas only come with thin grease in all of the diffs and they don't do anything. You should get yourself some diff oil to fill your diffs with and it will drastrically improve your handling. If your running on track a good base setup is 5,000 weight oil front, 7,000 center, and 3,000 rear then change from there according to how you want it to handle.

If your bashing just go heavier with the oils to get more evenly distributed power to the wheels (with lighter oils it will put more power to the wheel with the least grip which isn't good for grass or most other bashing conditions).

Does anyone have a recommendation for this buggy that has one for just bashing around on dry dirt and grass,even the driveway? Help please Thanks

For bashing put 10,000 in the center , 5,000 in front , and 3,000 in rear .

I usually run 5000 in the front, 7000 in the center and 3000 in the rear. It gives me good control of the car while keeping the ability to swing the back end around when I need to.