OK. I bought the three parts: 1) HDX300 Brushless motor, 2) Sonix ESC, and 3) that other little piece (i'm not sure what it's for).

NOW WHAT DO I DO? No instructions.

If anyone has instructions and/or pick I would be indebted forever!

Thanks in advance,

Jon

OK... i think I finally found instructions on how to set this up.
If you have a seperate gyro (I have a GY401) can I get rid of the 3-in-1 all together?

Thanks in advance.

Jon

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

Thanks for the reply. I figured out the assembly, but what about if you have both a seperate gyro and speed controller? Do you still need the 4-in-1? I suspect yet in order to drive the tail motor, but I am not for certain.

Thanks,
Jon

Well you definitely need the speed controller for the motor. Brushless motor HAS to have a brushless speed control because the 4 in 1 cant handle it. As for the gyro I just dont know. All I know is that the 3 in 1 in the Pro can plaug and play a gyro. Cant help ya there sorry but 1 of these other guys may know.