[Bar1975]

when i recently installed the new Lonex burgundy piston i spent a good hour or more polishing the rails and making sure that everything moved freely in regards to the piston at least. When the gearbox is closed up and inverted the piston would slide out of the cylinder and down the length of the gearbox freely with no assistance from me whatsoever.. purely on gravity alone.

I don't expect it can get any more free moving than that?

I'll check the shimming but the problem is... way back when this thread started out as a 'pre-engagement' issue i had no binding or motor/battery power issues whatsoever. It was actually the complete opposite.. everything was moving to fast and caused the pre-engagement. This binding only started with the new m120 spring upgrade and lonex piston (although im sure it's not the piston)

I am guessing that despite having a new 7.4Lipo it's the lack of torque motor (still running the G&P M120) not the lipo. The 11.1 lipo will turn over the G&P motor but as noted before.. probably not good for the motor.

I have heard that the SHS Ultra High Torque motor is great but power hungry.. will a 7.4V 20C battery pull the SHS motor ok? The other option is the Lonex A2 but that is over $20 more than the SHS.