Upgraded mcpx motor problem

[Bhujang]

Sweet looking mcpX. Mine also has this same issue on spool up! It has never done it when not engaged to a main gear but often happens more than not when the pinion and main gear are meshed together. It did it also with the stock motor before I upgraded to a brushless set up so I just give mine a spin by hand and away it goes. I tired changing bearings, main shaft and oiled well with no success! Never have any other issues. It's not ideal but no big deal for me.

[tonywv12]

mine is sorted now it blew one of the fets off the board so changed esc xp 7a to a new one and now spools up so must have been faulty esc.