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Old 04-10-2018, 02:24 PM
AGORV AGORV is offline
Join Date: Apr 2018
Location: Roma
Posts: 9
Default 3-blade propeller MT

question I have in mind of monatre on my RV7 a 3-blade MT propeller. do you know how it works with RV7?
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Old 04-10-2018, 02:42 PM
Mike S's Avatar
Mike S Mike S is offline
Senior Curmudgeon
Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,705
Default Welcome to VAF

Agostino, welcome to VAF
Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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Old 04-10-2018, 05:23 PM
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mike newall mike newall is offline
Join Date: Jan 2005
Location: Yorkshire, England
Posts: 2,094

Email sent
"I add a little excitement, a little spice to your lives, and all you do is complain!" - Q

Donated in 2020
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Old 04-10-2018, 07:37 PM
vic syracuse vic syracuse is offline
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Join Date: May 2005
Location: Locust Grove, GA
Posts: 2,667

I had one on my rv-7A and really liked it.

Vic Syracuse

Built RV-4, RV-6, 2-RV-10's, RV-7A, RV-8, Prescott Pusher, Kitfox Model II, Kitfox Speedster, Kitfox 7 Super Sport, Just Superstol, DAR, A&P/IA, EAA Tech Counselor/Flight Advisor, CFII-ASMEL/ASES
Kitplanes "Unairworthy" monthly feature
EAA Sport Aviation "Checkpoints" column
EAA Homebuilt Council Chair/member EAA BOD
Author "Pre-Buy Guide for Amateur-Built Aircraft"
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Old 04-10-2018, 08:51 PM
Jpm757 Jpm757 is offline
Join Date: May 2013
Location: Sherman, CT
Posts: 891

I installed a new IO-360M1B and MT 3 blade from Vans on my -7, with the new 59B blades. I am VERY pleased with this combination after 100 hours. Takeoff and climb performance is outstanding, and I am dead even with my hanger partners 180/CS Hartzel RV8 in climb and cruise.The MT was incredibly smooth BEFORE I had it balanced. Weight and balance numbers came in right where I had hoped. A little pricier than the Hartzel, but prop includes a beautiful painted & installed spinner assembly. Literally bolt the prop on and you're done. Have flown in rain, soft fields and frozen lakes with no blade erosion whatsoever. Also using the MT governor supplied with Vans FWF kit, dead on at 2700 rpm/no adjustment was required. 12 week lead time on delivery from Germany and the prop is shipped to a local dealer for assembly and delivery.
RV6 #20477 completed 1991 sold.
RV7 #72018 N767T first flight 11/21/2017 350+ hrs.
IO-360M1B MT 3 blade, Dual AFS 5600 QUICK Panel.
Manual Flaps. (KOXC)Oxford, CT, (0NY0)North Creek, NY.
1941 J3 Cub skis,floats.
2020 dues gladly paid.
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Old 04-11-2018, 12:02 PM
AGORV AGORV is offline
Join Date: Apr 2018
Location: Roma
Posts: 9

thanks to all and I apologize for the question a bit out of place.
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Old 04-12-2018, 09:07 AM
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jdeas jdeas is offline
Join Date: Mar 2006
Location: SoCal
Posts: 630
Default Very happy with mine

In my case I can out climb but have lower top speed than other RV7 aircraft I have flown with. This is in line with much of what I read on this forum as well.
We are taking a knot possibly two at low alt so the difference is rather small. I also just like the look of a 3 blade

If anything, the three items I would suggest you consider are:
1) I feel the 3 blade composite reduces vibration a bit over metal 2 blade
2) The light weight of the prop and modern starters shifts the CG weight back enough where you will hit aft CG limits before gross weight unless dealt with during the build.
3) It will be harder to remove the cowl for service
RV-7 N314SY (KWHP)

CANbus based trim/flaps and electrical
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Old 12-20-2019, 02:04 PM
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Craw Craw is offline
Join Date: Nov 2019
Location: Ottawa, ON
Posts: 10
Default MT Prop

I am currently building an RV7A with the angle valve IO-360. I am considering a Sam James Cowl and Ram Air kit. Does anyone know if the MT 3 blade prop would require an extended hub for this configuration?

Thanks much
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Old 12-20-2019, 05:07 PM
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JoopSJ JoopSJ is offline
Join Date: Dec 2016
Location: The Netherlands
Posts: 78

Just tell MT your engine, induction type and cowling and they will send you the correct spinner and extended hub.
That?s what they did for my combination:
Lyc-IO360-M1B, horizontal, Sam James long cowl.
You can contact Eric Greindl.
Empennage, Wings, Fuse .. Done
Working on Finishing and FWF
Donation 2017. . . 2020
Chairman NVAV (EAA chapter 664 - Dutch experimental aircrafts builders)
Member EAA
Member AOPA
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Old 12-20-2019, 05:10 PM
Reflex Reflex is offline
Join Date: Jan 2015
Location: Kansas
Posts: 178

You might give McFarlane Aviation a call. They are the new master distributor of MT props in the U.S. I had the good fortune to speak with Dave McFarlane himself at length regarding the MT prop. Mr. McFarlane flies an MT on his personal aircraft as well. His knowledge and personal experience gave me loads of reasons to go with MT, so I did. The reasons extend to go MT go far beyond flight performance.

My guess is that we'll see him advertising on this site one of these days.

Dues Paid for 2021
Emp Complete (including fiberglass)
Wings complete (including fiberglass)
Fuse Complete
Working on Finishing Kit
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