It depends if you want to go all out for speed or endurance.
The 800 Motor isn't really fast enough for speed for that you would need an 850 or 900.
An 800 will only rev up to about 4500, I have 2 of these in a 6 foot Destroyer which powers along fine.
MFA supply a recommended prop for this motor, it might be worth trying that as it is a 2 blade plastic prop which is only about £2-00.
For power a 12 volt 7 or 9 Ah battery should be fine, but for a bit of extra speed a 12 volt 5Ah will give you reduced duration but as it is much lighter better performance.
Bob
