3-Bladed Hartzell Prop on the RV-10
 

Has anyone installed the Hartzell 3-bladed prop (C3Y1R-1N/N7605C) on their RV-10? From the Vans price list, it looks like it also requires the Hartzell Polished Spinner. It appears that the total added cost versus the Hartzell 2-blade blended airfoil prop is about $12,000. I'd be interested to hear from anyone that has experience (positive or negative) with the Hartzll 3-blade installed on their RV-10.

3 blade vs 2
 

I have it and I love it. Hit with the ladies and children alike!

Another option is the HRT series from Whirlwind Aviation. The 375HRT is perfect for the IO-540 260hp and about $16K with the governor, spinner and hardware. Plus it's composite, meaning the blades are made of carbon fiber, providing a 3-blade prop that that weighs about the same as a 2-blade Hartzell metal prop.

However, what wasn't mentioned is that the most efficient prop is a 1 blade. If you want the more efficient prop in cruise, get a 2 blade.

Drag, much like gravity, is one of the laws that has to be dealt with; more blade area = more drag.

...now, where did I put my flame suit...

Suggest you also look at the MT 3 blade prop offered by Vans as an RV-10 option. I haven't flown mine yet, but install was easy, and it has a bit more ground clearance than the other props (e.g. less opportunity for prop strikes). And it is several thousand $ less than the Hartzell 3 blade.