pinion for revo & problem signal

[REfuso]

thanks for the answers and for the welcome one
thin to I have now made about ten discharges with the pinion 12T, spur gears 40T,
I have disabled the brake motor and reverse, use the mechanical brake.
The rx is positioned the most distant possible by the motor\esc.
From the first start I have had problems, I had read on the loss of signal of the radio for interferences from the motore\esc but also moving the rx I have not resolved.
I now try to read the link of Arctik.
hi and thanks Al.