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Old 02-09-2017, 04:34 PM
deej's Avatar
deej deej is offline
Join Date: Jan 2005
Location: Brunswick, ME
Posts: 306
Default Electric variable pitch prop?

I have a solid crank Lyc O-320, so I can't use a hydraulic prop. I've been looking around for electric variable pitch props, but at $14k the MT is just ridiculously expensive.

I've found GT propellers.

Are there any other companies that make an electric variable pitch prop for a Lycoming O-320?



Last edited by deej : 02-10-2017 at 02:03 PM.
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Old 02-09-2017, 05:15 PM
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N941WR N941WR is offline
Join Date: Jan 2005
Location: SC
Posts: 11,806

Check with Brian Kelly of Radial RV-8 fame. He is running one of their props. Here is the link.

The other option is to find an Aeromatic propeller that will work with your O-320.

I flew behind one on a Fairchild 24W and it was a pretty cool prop! The pitch changed automatically based on air loads. Of course, the F24W is a LOT slower than your RV.
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC

Last edited by N941WR : 02-09-2017 at 06:06 PM.
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Old 02-09-2017, 05:18 PM
moosepileit moosepileit is offline
Join Date: Dec 2010
Location: Floyds Knobs, IN
Posts: 310

I wanted to try the Avia 503AP they had for a few years a decade ago. Saving on a 2 blade Catto.
RV-6 N91GG, bought from builder.
O-320, slider, carb, mags, FP
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Old 02-09-2017, 05:24 PM
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rv6ejguy rv6ejguy is offline
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 4,903
Default Russian Props

These folks are working on an electric VP design:

Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW since 2003- 427.8 hrs. on the Hobbs,
RV10 95% built- Sold 2016

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Old 02-09-2017, 07:37 PM
h&jeuropa h&jeuropa is offline
Join Date: Jun 2008
Location: Kalamazoo, MI
Posts: 207

I have an Airmaster on my Europa and it works well. But I just had a look at the website and they don't list Vans or Lycoming.

Send them an email - they are good at responding.

Jim Butcher
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Old 02-10-2017, 05:27 AM
n816kc n816kc is offline
Join Date: Jan 2005
Location: Winter Haven, FL
Posts: 213
Default Airmaster

Has been developing a Lycoming version for a while now. They're holding close, may have some news at SnF.
Kevin Crews
Bartow, FL
RV-6 'Woo hoo!'
2018 =VAF= donor
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Old 02-12-2017, 03:18 PM
Robert Anglin Robert Anglin is offline
Join Date: Mar 2008
Location: houston, texas
Posts: 900
Default Fixed pitch that can change by it's self.

I think you would be looking for a fully adjustable prop, but. You may want to look at one like a Prince "P" tip. We run one on our 8 and it does as it was said, change about 4" of pitch from full low speed coned load "like take-off" to that of cruse up at speed. We set it up as Lycon and Toni Bigalus have recommended, 2,300 RPMs + or - 50 at full static run-up and full rated 2,700 RPMs at 7,500' D.Alt. + or - a little. It comes in at 2-3 mph. of other top brand props on the top end and bites hard for good take-off runs. I like ours, it is very durable with Urethane leading edge protectors. I know I have picked up more than a few good size rocks off our old bad taxi areas. Just two pennies, Yours, R.E.A. III #80888

Last edited by Robert Anglin : 02-12-2017 at 03:22 PM.
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Old 02-12-2017, 07:31 PM
David Paule David Paule is offline
Join Date: Dec 2009
Location: Boulder, CO
Posts: 3,663

Your options would increase if you had a hollow crank. Would the swap be worth it? Of course you'd also need a governor and a governor adapter.

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Old 02-12-2017, 09:27 PM
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deej deej is offline
Join Date: Jan 2005
Location: Brunswick, ME
Posts: 306

Swapping engines would cost me way north of the $14k to buy an MT! :-) If I pull the engine, it would only make sense to put in an IO-360, or at the very least an O-340 stroker to replace the O-320. Plus, I'd still have to buy the constant speed prop, which even though hydraulic would still be around $10k.

The GT prop includes the spinner, but not the electric constant speed controller, which would be another $1k, so around $9k total. So far that is the least expensive option sans finding something on the used market, or an announcement at Sun-n-Fun.
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Old 02-13-2017, 08:15 AM
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Raymo Raymo is offline
Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 1,849

I have a MT electric prop for sale. It needs to go back to MT for repair (prop strike at idle damaged one blade). MT estimated 4500-5k for repair. I'm asking 2k plus shipping as is.

Ping me for details, if interested.

EDIT: This was on a O-235-L2C so it may need both blades replaced, which would likely affect repair cost.
RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, 1 PMag, Vetterman Trombone Exh, SkyTech starter, PlanePower Alt
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines

"The object of the game, gentlemen, is not to cheat death: the object is not to let him play."
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