ORIGINAL: warks62
I used a 16-10 MA that I cut down to 14.5 (Balanced of course) to get the RPM up where it should.
Why not a (3 blade MA) 16 x 8?
ORIGINAL: warks62
I had to use a 12-6 MA 3 blade on my Saito 72's that I have in my B-25, would of liked a 12-8.
They do make a 3 blade 12 x 8 now, but that's EXACTLY the reason they (Master Airscrew) need to come out with a 13 x 6. I too have a Saito .72, as well as the newer .82. Both could probably swing a 3 blade Master Airscrew 13 x 6, IF THEY MADE ONE!
Sorry, getting off the subject here (CMP Hellcat).
Looking mine over and experiment with retracts (I have lot's of them), it appears that the retract bays must be enlarged for many of them (ALL the air operated ones). Plans show installation of Hanger 9 Corsair/ P-40 mechanicals: I doubt they would be sturdy enough unless the struts were replaced with titanium ones, so I am pondering World Models (.40 size Corsair/ P-40) ones outfitted with titanium struts, and using a retract servo for each (no bellcranks, no long linkage). Simple, cheap, and they fit without having to modify the retract bays.
I am also looking at shortening the fuselage by moving the cowl farther back, so it sticks out 130mm instead of 150 as called for in plans. Much more scale look, BUT it severely restricts engine size: Saito 1.20/ 1.50 would not fit.
Also looking at removing 1/2" from each wing at root for better scale appearance. Part of the problem is that the dihedral 'break' is too far outboard, and main gears the same. Ditto for flaps. So, removing a short section of the roots will improve scale looks in a lot of areas.
How about C.G: anyone having trouble/ needing to add nose weight? If so, what engine are you using and how much nose weight?