Originally Posted by jurquhart

Quick question I just installed my 7.5 turn viper engine with MMP in my slash 4x4. The motor feels like it's getting hot real quick with the gearing I had in it 16/54. shouled I drop down on the pinion to the stock pinion setting of 13 or should I go even lower. Just worried this will effect my speed. I bought this to go faster than what I was with the stock Velineon system

Originally Posted by Chris K

Don't agree; and my experience supports my statement.

You're geared too tall - get the gear down to 13/14 range and you'll be fine. My motor of choice for my 4 x 4 slash was either the Castle 1410 OR a 8.5 Xcelleron motor - both geared 13 x 54. NEVER a heating issue with either an Xcelleron speed control or the Castle Sidewinder SC. I'm anxious to test these combinations in the Losi TEN SCTE. Starting out with a Fantom 10.5 and the Xcelleron speed control. - starting at 15/40 and hope to go to at least a 16 tooth indoors - large track.

With the Viper motors tendency to be torque superior my thought is that they will do very well in these trucks. The Slash 4 x 4 is the lightest of the bunch.

You're welcome!