Prop Size

[Rokieboater]

What's the best prop size or two for a JAE .21 using a CMB RS .21 with an ops pipe set @ 8"

Thanks,

Robert Holland

 

[dave roach]

Robert

1450 - ABC h7 3.7 pitch

Dave Roach

 

[shoboat]

Robert,

The H-6 is working well also pitched up a touch.

For some motors the H-7 is sometimes too much

propeller. High altitude the H-7 is too big.

Thanks,

Mark Sholund

 

[Duck899]

Robert,

The H-6 is working well also pitched up a touch.

For some motors the H-7 is sometimes too much

propeller. High altitude the H-7 is too big.

Thanks,

Mark Sholund

Agree....try an H-4 as well....but, at sea level the H7 @ 3.75" will be ballistic at the nats.....I run an H7 in Edmonton at 2200' elevation but cannot pull it in Calgary at 3200'.

My .02$

 

[Al Hobbs]

Mark Bullard told me that he is using a pitched up H-7 with an A/A 21 on his JAE 21 in Alabama.

Al Hobbs