Sterba

[ppowers]

Whats everyone think of the sterba props? I'm building a 6 with a io320 that's suppose to be 180hp. and thinking of trying a sreba prop.

[acam37]

I have one I need to sell. Not sure if it will work with your hp rating though?
http://www.vansairforce.com/communit...d.php?t=128182

[ppowers]

I think I need an 82 pitch according to sterba.

[Guilhermepilot]

suberb prop

static 2380 rpm cruise at 6500 wot 2640 rpm 170 tas

[Guilhermepilot]

70/82

[smokyray]

Originally Posted by ppowers

Whats everyone think of the sterba props? I'm building a 6 with a io320 that's suppose to be 180hp. and thinking of trying a sreba prop.

Most every RV subject has been breached over the last 15 years, here is a decent thread on the subject.. My RV4's Sterba prop provided decent 0-320 performance with a 69X69 (diameter/pitch) although my Catto outperformed it considerably and handles rain with aplomb....Buy a Sterba? Be sure to buy some spar varnish to go with it. Plan on checking your bolt torque frequently as well, especially in a wet climate.
http://www.vansairforce.com/communit...ht=sterba+prop
V/R
Smokey

[jrs14855]

I have a Wittman Tailwind, 0 320, with a Sterba 70 x 82 that was designed for a 180 HP RV4. I have 10-1 pistons, no other engine mods. The prop is way too much pitch for an 0 320. Takeoff and climb is very poor. The prop only turns 2500 r/m full throttle at low altitude. It does go fast. I am truing 185 knots full throttle at 4500', but it would be considerably faster with less pitch/more r/m.

[ppowers]

My engine is an aeio320. It was built by DeMars aero and says it's 180 hp, but,, who knows what it will be in reality. Not real sure on prop pitch, it'll be a shot in the dark.

[pierre smith]

Catto's props usually beat all the others for speed.


We flew our -6A for 5 year/500 hours and trued 201 MPH consistently, at 7500' and 2750 RPM.

Best,

[ppowers]

What pitch was your catto?