Originally Posted by
barg
Are you using the steel crown gears? I bought some recently and they are absolute rubbish. I bought 4 sets at $25 a set and they are only the 2 main crown gears.
Well I ran these at our recent nationals and munched through 4 diffs as they do not mesh properly with the old small bevel gears.
I just got the hard diff cases this week and spent 2 nights trying to build a decent diff. The steel gears just wouldnt work no matter what I tried.
I eventually built the diff with all of the original internals and shimming to get it to be smooth.
I have yet to run the diff yet so I dont know if it will hold up but I have to say after running Kyosho for the last 10 years I am so over the rubbish they have bought out with this car.


If I have diff issues again this weekend I will be selling the lot and moving to a more reliable brand.
If you use hard diff case with steel crown gears and standard new small bevel gears you will absolutely have no problem. I run this diff about 7-8 liters and still are in a very good condition! Also you must put standard shim that came with standard gear set.