Prop selection SS7 912ULS

[Tomfox]

The more I read, the more confused I get. I am ready to order the engine and prop for my SS7 build - 912 ULS engine - ground adjustable 3 blade prop. I think I am down to the sensitech 68" and the whirlwind 70". Any opinions here?

Thanks
Tom

[Dick B in KY]

Can't comment on the Sensitech, but I have a Whirlwind three blade and it is working great on my SS7 with 912ULS. Easy to adjust pitch and no problems

Dick B

[JohnB]

Can't comment on the Sensitech, but I have a Whirlwind three blade and it is working great on my SS7 with 912ULS. Easy to adjust pitch and no problems

Dick B

Dick,
What pitch did you end up with on your Whirlwind and what are you getting for static RPM? I'm just about ready to bolt mine on. I think the instructions that came with said to start with 17 degrees.

[Tomfox]

Is it the 70" whirlwind?

Thanks
tom

[Dick B in KY]

Mine is set at 17 degrees, 12 inches in from the tip; RPM is 5600 on takeoff. Yes it is 70 inch 3 blade.

Dick B

[Av8r3400]

Hopefully before the end of the year I will have a pirep for my new Lonnie Prince prop, 78x48, on my Mangy Fox project.