Bertram31.com General Bulletin Board

Re: Prop size for 6bt, 250H.P

Posted By: Vic Roy
Date: Monday, 28 March 2005, at 8:51 p.m.

In Response To: Prop size for 6bt, 250H.P (Mac Creech)

Mac - AJ, with the same engines and gears, is swinging 21x22 three blade Nibrals with no cup and is probably a bit under propped, but runs fine with any load. With your big tower I'd start with 20x22 or 21x21 in the three blades. My guess you would start on the underpropped side there. On the other hand, may be a good idea to up an inch on pitch on either one and come back down, since you now gonna be a speed demon.

UV

Messages In This Thread

Prop size for 6bt, 250H.P
Mac Creech -- Monday, 28 March 2005, at 8:35 p.m.

Re: Prop size for 6bt, 250H.P
Vic Roy -- Monday, 28 March 2005, at 8:51 p.m.

Re: Prop size for 6bt, 250H.P
Capt. Mike Holmes -- Monday, 28 March 2005, at 9:06 p.m.

Re: Prop size for 6bt, 250H.P
Capt. Dave Kosh -- Tuesday, 29 March 2005, at 10:44 a.m.

Re: Prop size for 6bt, 250H.P
andre fourrier-Louisiana -- Monday, 28 March 2005, at 10:07 p.m.

Re: Prop size for 6bt, 250H.P *PIC*
Andre B. -- Monday, 28 March 2005, at 10:16 p.m.

Re: Prop size for 6bt, 250H.P
Capt. Dave Kosh -- Tuesday, 29 March 2005, at 10:59 a.m.

Re: Prop size for 6bt, 250H.P
Mac Creech -- Tuesday, 29 March 2005, at 6:58 p.m.