GSC to IVO on 582 2.62

[beeryboats]

I had a prop post in the general discussion area and one reply said that the three blade IVO was not a good prop with the 3:1 gearbox. Harmonics were the issue. Has anyone else heard this?

[TY2068]

Call IVO, that's what they will tell you. 3:1 C they say 70-72" 2-Blade medium.

[TY2068]

I like my 72" so far. Along with the RK-400 clutch it seems like a good set-up. Easy to dial in max static rpms (I have it set to 6,200-6,300). Plane leaps off the ground and cruises around 75.

[Av8r_Sed]

I've got the same setup except it's 70". I set my static to 6000 RPM and see 80 mph cruise and still have pretty good climb.

Remember to keep up with retorquing at 10 hour intervals if it's a new prop. Over time I've been able to stretch that out a bit.

[TY2068]

Hi Paul, I was wondering why you opt to have your prop set to get 6,000 max static. After installing my prop all indications (I read it on the internet) were that 6,200-6,300 static was the targeted rpm range to shoot for. Being you have a good amount of experience I'm thinking you have a good reason.

Again thanks for your advice and assistance when I was having problems with getting lower idle. I finally worked it out as a carb slide and cable issue. The engine key bump starts and idles around 2,000 once it warms and settles down a bit. I really like the IVO and RK clutch combo so far. Totally different machine vs. the 68" 3 blade GSC and no RK.

[Av8r_Sed]

I chose the lower static because I wanted the higher cruise more than maximum climb performance. Since all my flying is with field elevations below 1000 MSL climb is still more than sufficient.

[TY2068]

Hi Paul,

That sounds logical. I was thinking maybe you had yours set more course to limit peak rpms in the air at full throttle. Much of what I read said to shoot for 6,200 with this prop. I believe 6500 is the max allowable for a short period with 6,800 being redline revs. I may dial in a bit more pitch and try that out.

Thanks