Originally Posted by
buster8787
I'm trying to sell my SC 10 4x4. I broke either diff atleast 4 times each. If there is an easy way to fix one, I never found it. What I did do the last time either broke was I put 3 shims rather than one. Never broke them again. As soon as you hear it pop, it's just a matter of time before it's toast. I liked the truck, but it is (in my opinion) too light to run in our 40mph winds out here on the praries. Now have a Losi.
I race mine twice a week and have no issues. I did the diff modification adding the 5x10x3 bearing on the outdrives inside the original diff bearing. All the diff problems are from not having enough limiters on the outside of the shaft causing the cva's to hit the outdrives on full compression. Look at the wear marks on the cva's from that. That is the only problem and also keep the belt a little loose and I have found no need for the under drive pulleys.