I keep chewing up my diff gears
 

Do anyone know of a way to fix this I can not keep these gears in one peace

I was thinking about getting the FLM diff case?

shim shim shim. alloy diff cases help too though.

shim very tight
is the alloy diff case worth the cash $60 x 2 to much

do you have the hpi alloy diff cases?

K now there are 2 things that can be alloy. i have the HPI alloy diff cases that hold the spider gears and i have the FLM bulks. Between them and properly shimming i have yet to replace diff gears years i have had the truck. Ans the flm bulks have only been on for about 6 months.

The hpi alloy diff cups (hold the spider gears) are a must. I also plan to buy the flm combo case/bulks for my flm chassis. Shimming the ring and pinion properly is a must for any vehicle, especially a heavy monster truck.

I agree with linc, the HPI cast-aluminum diff cups really do help.

My Savage has run on the same diffs ever since I got it used (except I added the diff cups). It's got an extended FLM low-CG chassis, center differential with 100k oil, was using 10s2p A123 (now 9s1p), was using a KB-45 10XL geared for 70mph, and a CC HV-110 ESC.

I do have the hpi alloy diff cups I was looking into the flm combo case/bulks

looks like it the shimming that should fix this I did shim this yesterday will see how this goes

I use the X diff cases with aluminum cups. Propperly shimmed and I have yet to blow a ring or pinion. I have however fractured a spider. (I have no idea how I managed to do that either).

People have also used diffs from the Cen Genesis in the savage for some really really meaty diffs. They are huge teeth. Only downside is they are 2.89 ratio, so gearing will change.

I'm currently doing the Cen Gen conversion. Has anyone else done this and still had a problem with their diffs? I would like to stay away from any aluminum parts, like the bulkheads.