stancaruthers
Well Known Member
Just ordered 2 blade Hartzell Composite 74" for the ~8 IO-360 Parallel Valve
Can anyone provide experienced feedback?
Can anyone provide experienced feedback?
Besides looking really great, it's very smooth, pulls like a freight train when adding power and stops on a dime. Great for formation.
Can you tell I love mine?
With the 72" blended, I could hold tail up over my head and still had 10" clearance, I don't feel adding 1" will hurt me.
When we got our first ASC props we had several issues with the blade/cowling clearance at full course pitch. Initially, we limited the degree change of the blades, but that produced overspeeding of the engine at higher TAS. I believe initially they were at 35 degrees and then were changed to 28 degrees of pitch.
Hartzell changed us from B hubs to G hubs, which moved the blades about 1 inch further away from the engine. Using their spinner it was just a bolt on swap. The 'gap' was adjusted with washers between the hub and the backing plate. Very little change and was easily measured before installing the prop.
What a great prop and a great company supporting it.
Did they attach any "G" limits to the G hub? Or is it the same as the B?
I am considering the Hartzell composite prop for our RV-7A project well underway. I'm familiar with the prop as we had it on our DA-40 XLS. I'm just trying to justify the cost. I know it's a superior prop in many ways.
The project has a Titan O-360 (soon to be IO) and I have a cold air sump to install which will also require horizontal induction. My understanding is the standard Van's cowl will not work, but the extended Sam James should.
Does anyone know what will be required (like a prop spacer) and/or the SJ cowl for this setup?
Thanks in advance.
Understood.
Will the standard Vans cowl work with the Hartzell prop AND a cold air sump with horizontal induction?
Mounted prop last night, I have 3/4" between spinner and cowl....would like much less. I guess I could buy longer spinner hub mounting bolts and space it back toward cowl ??
Maybe just leave it alone for the moment and fly ?
My other prop/spinner was 3/8"
Will this space be an issue other than cosmetics ?