prop question

[bitton79]

I would like to know if anyone used a grimracer prop with the bj 26. what grimracer prop is the best to use for a good top-end speed without over-loading the motor and esc. i am running 2s 4000ma lipo's with stock motor and esc. i have seen that people are using the 40x53 prop. can anyone please assist?

[bitton79]

I really need assistense.

[crazzy maxx]

i run that grim racer prop as a beater rough water prop. with speed i go with the 642. i see a big speed difference when i run the two. im running 14.8v 3100 lipos.