Ok Cool thanks for all the info guys.

My nephew would like to run with his friends on a paved track with his b44.1,as ill be buying him a set could someone please recommend a tyre.Maybe pre mounted?He has the 12mm hex adapters.

Cheers Mat.

Can someone help me with the shimming on the diff.. I have had my b44.1 for two weeks now and have gone through two main gears on the rear diff .. I had a fs2 and never had a diff problem like this before its getting very frustrating. Can someone give me some pointers to help me with this diff problem.......

I have a BJ4 worlds edition car that has been collecting dust for the past few years. I would like to upgrade it to the B44.1 A lot of things look the same (shocks, diff, ect..). What are the exact differences? Could I simply buy the b44.1 chassis, arms and shocks towers and swap them out with the BJ4 ones?

I had the same problem, shim the diff towards the smaller pinion gear and if the pinion gear moves back and forth that could be bad also, I didn't catch that until 5 gears later, make sure that doesn't move either. Now I like to shim the transmission on the tight side so it lasts a long time.

Anybody run the lrp x20 yet?? Hows it compare to the reedy sonic or triniy duo 3???

6 on the gear side, 4 on the opposite. You want no side to side movement of the diff within the housing.

I have also had this same problem except that I was getting damage to both front and rear diffs. I was rebuilding diffs every week. The manual states to put 2 shims on one side and four on the other. I have added an extra two shims on each side. So far the front diff has behaved after 3-4 races. Although the rear has improved I think it still needs more shims. Unfortunately its a trial and error process, you may need to sactrifice a couple more bevel diff gears before you find your right fit.

I can't rember how many shims came in the kit, but I probably added 3 or 4 more over that to get it snug.

Man you guys scared me about the diffs so I pulled mine apart. I have about 15 races on mine now and they still look like brand new!! I guess I'm the lucky one. My concern and only thing I don't like about the car so far is the steering rack. Whats up with all the play when steering all the way left or right? Something just doesn't seem right.

Thanks guys for all the help with the diff I put 6 on one side and 4 on the other side and it feels alot better so we will see how it works this weekend... Thanks again guys...

Welcome to Associated sir.

Man im poretty pissed off, i ordered the neotech batteries from hobbyking and i have yet to get them or get a traking number that works. i hit up the costomer support like 3 days ago and they still have not gotten back to me. Ugh this is bull.

Just finished cutting out and painting the new body. Im still pretty new at painting bodies but im happy it matches my rc8

Hey can anyone tell me which wheel hexes and rims are the best setup for the b44.1? Thanks for your help in advance.

Derek