Redcat volcano upgraded to 60a esc and 3300kv sensor less brushless 550 chattering
 

Old version redcat volcano epx...upgraded to 60a ESC, 3300kv 550 brushless sensor less motor and 5200ah 2s 50c lipo batteries...chatters when taking off, once it gets rolling it smooths out and goes like stink.... anyone else encounter this? Would a smaller tooth count pinion help? I believe stock is 17t pinion 64t spur... thinking about a 13t pinion because I also have some oversized tires to put on.