RE: HDX300 Brushless conversion--- HELP!
If you have a 3 in 1 you only need a brushless motor and esc. Nothing else . If you have a 4 in 1 then you need motor esc and that brush2less conversion thingy. And the gyro is also plug and play according to Horizon Hobby.
If you need instructions do a search for "brush2less conversion" Im sure thatll take you to the site. Ive seen the site before but dont know the addresss