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I have an RC10 B3 with a stealth transmission. Installed a brushless system and the transmission slips bad. I tightened the slipper clutch all the way and it still slips.

With the slipper fully tightened and holding both wheels down, i can turn the spur gear, clutch assy in both directions. Not sure if something is wrong internally.

Anyone have any ideas?

It could be one of two things, either the slipper clutch is slipping or the differential is slipping.

Can you determine which it is?

It was the differential slipping. I removed the rear right wheel, tightened it up a bit then backed off. Works! Now gotta work on the good pan