Customer Feedback

Example of a PA-31T with Blackhawk Conversion and MTV-27 Propeller
Dear Bobby and Oli

Last Saturday I could pick up HB LNL. It is just wonderful to fly. The perfomance is spectacular and the comfort is so much better with the 5 bladed Props. It s a perfect match. I would like to thank you for your support and for all the many things you did form e and that were necessary to make this happen. It is my best Christmas gift I ever got.
Merrry Christmas and a Happy New Year.
Dan

PA31T with 5-blade MT-Propeller Liebes MT-Propeller-Team,

Als ich damals vor ca 10 Jahren bei meiner Piper Cheyenne II von den Original-3-Blatt-Propellern auf 4-Blatt-Propeller wechselte, war der Unterschied in Sachen Lärm, Vibration und Beschleunigung beträchtlich.

Seit einer Woche nun fliege ich mit den neuen MT 5-Blatt-Propellern. Die neuen Propeller sind unglaublich leise und vibrationsfrei bei gleicher Leistung. Selbst meine Frau, die nicht besonders gern fliegt, ist begeistert vom jet-like feeling in der Kabine. Das Reisen mit dem Flugzeug sei viel weniger ermüdend als vorher und man könne jetzt während dem Flug viel besser ungestört lesen oder arbeiten.

An dieser Stelle möchte ich dem ganzen Team herzlich danken für die geleistete Arbeit. Propellerwechsel, Testflüge, Balancing und das Einstellen der Motoren war stets gekennzeichnet durch Professionalität auf höchstem Niveau. Die neuen 5-Blatt-Propeller sind hervorragend!

Mit freundlichen Grüssen Daniel Knutti

Cirrus SR22T with 4-blade MT-Propeller
Hallo Herr Eberl,

auch auf diesem Weg möchte ich mich noch einmal ganz herzlich für den Umbau unserer Cirrus auf den 4 Blatt Propeller bedanken.
Obwohl ich erst den kurzen Weg von Straubing nach Donaueschingen geflogen bin , muss ich sagen: PHANTASTISCH....!!!!

Mein erster Eindruck:
Die Cirrus hat viel mehr Biss,eine kürzere Startstrecke, bessere Steigleistung, bessere Kühlung und ist dazu noch angenehm leise & vibrationsarm. Und die wunderschöne Optik....
Wir wissen schon, warum wir MT-Fans sind . Deshalb auch unsere Entscheidung: Entweder eine MT-Cirrus oder keine Cirrus mehr!
Gerne berichten wir Ihnen von unseren weiteren Flügen und Erfahrungen mit dem neuen 4-Blatt Propeller.

Herzliche Grüsse
Herbert Schmidt

Tundra 200 with 2-blade MT-Propeller Guten Tar my freund (writing from sounds...not from dictionary!)

We have 35 hours on our Home built Tundra 200 (Lycoming IO-390) and it is performing better than any Tundras on same settings...
The prop works fantastic and thus far we really appreciate the quality of our MT prop. IF you have any maintenance tips, please let me know as I will baby this prop for as long as I can and cant wait to show it off at Oshkosh!

Cheers
Jean-Michel Sauve
Yellowknife, NT
Proud owner of Tundra 200 CF-MSV (www.dreamaircraft.com)

SR22 G3 with 4-blade MT-Propeller Hallo Martin,

Ich bin über Ostern über 21h mit der SR22 G3 Turbo unter allen möglichen Situationen geflogen.
3 x Heringsdorf-Bremgarten und zurück, Einweisungen, Rundflüge, Starts auf z.B. Grasplatz Ebern-Sendelbach 500 Meter Länge – durch nur positivste Erfahrungen FL120, 1-3-Stündige Flüge und ich habe ja den Vergleich mit weit über 400h auf anderen Cirrus 22 Maschinen.

Kurzum: Er ist sagenhaft! Ein vom Start weg spürbarer besserer Schub, Steigflug – sensationell und der Reiseflug – unglaublich. Die Laufruhe im vergleich zu dem Metallpropeller ist enorm – gerade bei langen Überlandflügen sehr angenehm. Die Kühlung des Motors im Steigflug ist deutlich besser – um es genau zu sagen die Maschine kommt gar nicht erst in die Nähe des gelben Bereichs mehr.
Und von außen? Alle Leute staunen und kommen auf einen zu. Der Klang von außen am Boden, Steigflug und Reise/Vorbeiflug ist eindeutig ruhiger und verleiht der Cirrus eine neue "Geräuschkkulisse". Das typische Cirrus-Sägen ist komplett weg.

Grüße
Thomas

(Our Customer told us about his experiences with the new 4-blade Prop on the Cirrus SR22 G3 Turbo - he simply found it incredible.)

Customers NXT with MT-Prop installed Martin, I often think back to our discussions at snf in 2007 where I had told you I was concerned that MT props were much slower than the Hartzell used on most NXTs, however, you convinced me to purchase an MT propeller and I am completely satisfied with the smoothness, climb performance and speed of your propeller.

While the I do not have a direct comparison to another propeller, my maximum TAS of 402 mph so far, is adequate for my needs. I wanted a good cruise propeller that would work well at 2400 rpm or less and I am completely satisfied with the performance in this range. At 2250rpm and manifold pressure of 23 "hg the plane cruises at 250KTAS at 14.5 gph at 7500ft density attitude and the smoothness is similar to a turbine.

Best Regards
Ron

Example for a TBM 700/850 with MTV-27

"Dear Martin,

Congratulations to your engineers!
What a treat! Pilot and Passengers!
Noise and Vibration Level from Ferrari to BMW.
You just want to keep on flying...
A worthy investment.

Thank You!

Beste Gruesse und bis bald

Antonio
TBM 850 owner with MTV-27 propeller system January 13, 2011

I have been flying in a Super Decathlon for 2 years at Executive Flyers with a Hartzell 2 bladed prop. A friend of mine, who works at HS has started aerobatic flight instruction part time.
He competes at the Unlimited level. I flew with him yesterday in a Super Decathlon with the 3 bladed MT prop.
This was the first time I flew behind an MT prop. I was very impressed. Takeoff and climb performance was noticeable improved as well as prop moothness. From a guy who has been around props for almost 40 years, I can tell you that you should all be very proud of your products.
BR
IK October, 2010

Cessna 421 The pilot, Rodrego Cruz from Astra Charter in Ft. Lauderdale reports the interior noise level is noticably less. It is much smoother and feels like a turbine.
It gets attention at every stop with folks asking what kind of plane this is with the 4-blade props.
The MT props have a neat chirping sound made during taxi. Time to climb is reduced and cruise speed at same power settings is a few knots faster.

Pilatus PC 12 customer feedback of Mike Dennis Pilatus owner of a PC 12 (pdf 1.4 Mb)

(example of a PC 12 with the MT 5 blade Propeller)

I have just acquired a new MT propeller for my Mooney M20K (231).
I fly in the western United States with high density altitudes. I selected the MT prop to gain improved performance for climb.
I am very happy with the results.
My take off runs are shorter and my rate of climb is about 300 feet per min greater.
This improved performance is both at sea level and airports at 6500'.
Cruise speed has not been negatively affected. The propeller is quiet and no vibrations at all engine speeds. MT has developed a winner!

Sincerely,
Chuck Crinnian
M20K @ KDVT (Phoenix Az)
www.frontierneurology.com

First American Blimp Cooperation ABC 150 flying in China with MTV- propellers

MT Composite Propeller Experience on my G36 by:
Craig Sommerfield [2007 Beech G36 w IO-550-B]

I was getting the itch for a bit more performance from my G36 when I read the article in the ABS magazine about the new MT composite propeller approved for my plane by Flight Resource........more (pdf)

(Example of a Beech 36 with MTV-9)

PA42-1000 /LS400 with MTV-27 Als Pilot der HB - LTM ( erste umgerüstete PA42-1000 /LS400), ausgerüstet mit Ihren 5 Blatt Propellern (MTV-27-1-E-C-F-R(G)/CFR()250-103) habe ich jetzt 600 Std. ohne die geringsten Probleme und Beanstandungen geflogen.
Speziell in vereisenden Situationen sind mit Ihren Propellern im Gegensatz zu den 4-Blatt Propellern nicht im Ansatz Probleme mehr aufgetreten...
In guter Erinnerung ist mir der Flug am 20.07.08 von Catania LICC 14:14 LT nach Mollis LSMF 16:30LT . Es hatte starke Vereisung und Turbulenzen über die Alpen und im Sinkflug (echtes Hundewetter)
Ich kann Ihr Produkt nur weiter empfehlen speziell auch im Bezug auf Lärm und Vibrationen, mehr Bodenfreiheit und besseres Startverhalten des Triebwerkes!
mit freundlichen Grüssen
Noldi Widmer

Skywriting by Oregon Aero Sky Dancer
.......Thank you for your tremendous support of airshow performers. It is people like you that make it possible for us to stay in this business.
Blue Skies, Suzanne, Steve and Pax
www.OregonAeroSkyDancer.com 303-478-4853

This mail is for congratulate all the MT team for the succes we get with the Cheyenne 400LS STC we installed.
Finally a week ago installed both MTV-27... on Cheyenne 400LS and was a great succes, the customer is most than happy with the STC, the aircraft perform much better than with the Dowty system, the sound level in the interior is amazingly lower and the aircraft really has increased the speed in "at least" 6 Knots, really after balancing we get a real jet like feeling.
On our side, as prop guys, i can only say congratulations for a great job in designing, manufacturing and selling this prop sytems.
I have installed many, many, STC, but this one, even being done on an important turboprop, was delightfully simple, and i ever say that the simpler it is for us the most you work on the design, this is the case because everything was straight forward with no even the minor problem.
We run the engines with the old props and took notes of all the parameters in ground (torque, RPM, Fuel flow, Temperarture) then we removed the props, installed the new MT, set the Flight Idle, correct a minor difference between the prop levers and then goes directly to the dynamic balance.
We start with a reading of 0,46IPS on engine 1 and 0,28IPS on engine 2 and after the second run of each engine they went down to 0,02 IPS engine 1 and 0,04IPS engine 2 the aircarft took off to San Pablo Brasil on a 3: 30 flight and at the arrival the pilot call me exited with the performance of the plane the do 330Knots at FL 38.
So once again congratulations for the job.

Eric thank to you for the commercial side. You have ever been a great help without with this sales would be impossible even when we do not put any gain on this and other new prop sales you have ever been there understanding our "third world" requirements to be able complete a deal, thanks a lot and definetely this encourage us to keep on working to sale more oustanding performers MT-propellers.

Diego A Clerici

MTV-9-B-C/198-52
This prop was installed new on my F-1 Rocket EVO.
Gross weight is 2100 lb.
HP Approx. 300.
Top level WOT speed is about 250 MPH at 1000 ft. MSL on a standard day.

Thanks.
Gene Holcomb

Piper 105 hp with MTV-17 The electric MTV-17-C/183-17f gives my 105 hp Piper the same performance like a 150 hp Super Cup with a fixed pitch prop.
Flying up to 16000 ft is no problem and cruising on the other hand with 3 GPH at 65 kts works also fine.
Thanks to the MT-Propeller Team for this great propeller ...........

Sigi Angerer
Chief Pilot of the Flying Bulls in Salzburg

Pitts of Embry Riddly Sport Aviation Club Embry Riddly Sport Aviation Club Letter (pdf)

Customer Feedback

custom built airplane with 3-blade MT-Propeller
Hi all!

Maybe you remember me.
This is the airplane made by me, powered with Rotax 912 ULS 3, modified by me for inverted fly, equipped with MT PROPELLER.
Your prop is more than OK!
IS FANTASTIC!!!!!
Thank you! Thank you!! Thank you!!!

Dragos Stoicescu, Ploiesti, Romania

PA31 Blackhawk with 5-blade MT-Propeller
Dear Mr. Albrecht,

after making a couple of nice trips with your companies new 5 blade propellers on my Blackhawk-powered Piper Cheyenne II, it seems to be the right time to share my experience with you.

I was already used to a relatively low cabine noise level with my old 4 bladed "black mac" propellers. These units have already shown a significant noise reduction compared with the original 3 bladed propellers. After installation of the MT 5 blade props, the noise level in the cabine has been reduced, damatically. My guests on board are extremely pleased with the very low cabin noise level and also negligible vibration. This is a real asset ! These high tech "thrust makers" do not just look very sharp, they add significant value. For all those who suffer from fatiguing noise and vibration during flight, these 5 blade MT props are in my opinion simply a MUST.

Since my Cheyenne II was simultaneously upgraded with the Blackhawk Inc. PT6A-135A engines and the 5 Blade MT propellers, I cannot tell how much performance they add to a basic PT6A-28 powered Cheyenne II. In my case, I simply received a new aircraft which is basically 30-50kts faster than the "old" one. Both upgrades together seems to be a perfect fit.

Go on with your good work !

Reinhardt Michel – Owner of PA31T with Blackhawk engines and 5 blade MT propellers:

Customers RV with MTV-15 Hello Mr. Lubitz,
a few years ago I bought your MTV-15-B/183-402 c/s metal prop for my RV. I would like you to know that the first flight happened on 9th April 2010, when after some three years of building and half a year pause, I was able to fly THE PLANE.

Well, it was a great moment for me, the one which I never forget. Now I have completed the testing and have 48 hrs on the Hobbs. Initially I thought I did not make a good choice with the prop as I could not get past 153 knots max speed at 8000 feet. (Van's performance data show 178 knots.) All the initial test flying (25 hrs ) was done without the undercarriage fairings and my RV friends kept on telling me that I would get some 12mph speed gain when fairings are fitted, but that I have to accept the c/s props do have a lower max speed as compared to fixed pitch Hertzel or Sensenitch props. The reason I selected your prop was that it had no restrictions through the whole range of speed. All the other prop did have one or the other restrictions in certain rpm ranges.
What I did like from the very beginning was a tremendous acceleration on the take off and a short take off run. Our airfield is at 3740 feet and temperatures in the summer do go up to 36deg C so we do experience density altitude above 6000 feet. Also, the braking effect of the prop on descent for landing and in the circuit is fantastic. I had a problem with screeching brakes from the very beginning and could not find any solution until recently.
Also I was testing the plane for shimmy on the undercarriage to find out if any wooden dampers would be required on the undercarriage legs (they are shown on the plans).
For those reasons I kept delaying fitting of the undercarriage fairings. Brakes sorted and no shimmy found, I was ready to fit the fairings. Opinions in local flying community as to what speed gain I will achieve vastly varied and nobody really new what fairing contributed by how much to drag reduction. So I decided to test it myself in order to find the real figures. I fitted each component/s and then test flew the plane at 8000 feet in NSEW legs of 15nm and measured the TAS by GPS. The results were:

Speed gain for individual fairings:

Main wheel fairings: 7 knots
Nose wheel fairing: 0 knots
Nose leg fairing: 5 knots
Main wheel legs + int. fairings: 10 knots
Main wheel legs + fuse int. fairings: 1 knots
==============================================
Total speed gain due to fairings: 23 knots

Interesting Article of Craig Sommerfeld, Owner of a G58 Baron with 4-blade MT-Propeller, published at www.bonanza.org (pdf 125kb)

Interesting Article of Philip Mattison, Owner of a Cessna 340A with MT-Propeller Conversion Kit, published in "The Twin Cessna Flyer" (pdf 590kb)
and another one published in March 2011 by Cessna Owner.org

Pilatus PC6 Der neue Prop ist ein Traum!!! Der Porter steigt schneller. Das teilten mir 2 Piloten unabhängig voneinander mit.
Zwar mit geringerem Anstellwinkel, aber dafür mit besserem Speed. Umlaufzeiten früher auf 4000m lagen bei 16-17 Minuten, nun bei 15. Es ist nicht unser Ziel derart schnelle Zeiten zu fliegen, Aber es fiel auf...
Gruß
Tobias Durr
(Trans-Porter-Aviation, Germany)
(Our customer told us that their PC6 has a much better climbspeed with the new MT-prop) June 27, 2010

With a special permit the owner of this American Champion Scout aircraft equipped with an MTV-15-B/203-58 propeller:
'I operated this aircraft - propeller - combination for 2200 hours without any problem and wants to thank MT-Propeller for the excellent product and support.'

Customer Feedback of Jim Parran, owner of a Merlin IIB.
Merlin IIB with the MT 5 blade Propeller I consider myself a strong supporter of your product and philosophy to assist your customers needs to the end.
My old props were well used for almost 40 years and due for at very least one serious overhaul.
Hartzell and McCauley did not want to really talk with me about replacement options so I expanded my search and found you.
I am very glad I did. Your ''can do'' attitude and quality of product is truly amazing. It would be an honor for me to support MT at airshow events when my schedule permits when I start actively flying again.

Thanks to you, Martin, and the entire MT crew for your work on my propellers. I could not be more pleased with their performance and appearance. Happy New Year to you all as well.
Aloha,
Jim Parran - Satisfied customer
Kailua, Hawaii

Customer Feedback of Tom Redman, owner of a C-182K Skylane.

I had an opportunity to fly for 2.5 hours yesterday and knew you would be interested in a little information and my comments regarding my 1967 C-182K Skylane.
As you know it has a stock 0-470 with 270 Hours since Zero Time Rebuild. Rod installed his F. A. T. (Forced Aeromotive Technologies) Supercharger in December and in January, we installed a new (M T) Two Bladed Prop. Before the installs, max climb was about 800- 900 FPM w/ the conditions below.
These two installs have Doubled the ROC.
All I can say is; WOW! With the Supercharger installed it will maintain 28” Hg Manifold Pressure well above 12,000 ft (That’s as high as I’ve flown it since the install).
Since the new Prop install two weeks ago, I haven’t had a lot of flight time, but here are the results from my flights yesterday.

Columbus, NE (OLU) – 1460’ MSL
46-54 Degrees F
Pressure 28.4
420# – 2 Ft Seat Passengers
170# – Baggage Compartment

Max Climb
28” Hg Manifold Pressure
90+ MPH
2650 RPM Prop Speed
Not yet Dynamically Balanced but runs as Smooth as silk
Climbs at 1600 Feet Per Minute on takeoff up to 4,000 ft MSL – (conservative)
This aircraft flies and performs better than other Skylanes I know of (in my very limited experience).
It is even more responsive to the throttle with the new Prop (due to the 19# lighter weight I assume) and much quieter at 2400 RPM or less. One really has to fly it to believe it…

Thank you Gentlemen for the Great Products and Service. This Airplane may turn out to be one of the safest and fastest 182’s around. An ideal Cross Country Aircraft.

My Best Regards,
Tom Redman
Osceola, NE

Merlin IIB with the MT 5 blade Propeller Can't say enough good things about your 5 blade props on my Merlin IIB.
What an all aspect improvement! I look forward to seeing the final performance numbers from Joseph's analysis but subjective reduction in vibration and interior noise is significant. I am very happy with their quality and appearance as well......

Joseph, Doug Turner and the entire DeLand crew were very courteous, professional, and pleasurable to work with during our time there.
I am very happy with my MT props installation.
Thanks again and looking forward to hearing more from you soon on the certification process.

Best wishes,
Jim Parran - Japan

I wanted to thank each of you for all of your time and effort in helping us with the Super Chipmunk.
With the change in the low pitch stop to achieve 2600 RPM as well as the new MT governor and accumulator the plane is performing flawlessly throughout the entire range of it's capabilities.
The accumulator works great - it is impossible to get the propeller to underspeed now even on the longest upline or tumbling pass.
Overall, the MTV-9 is a HUGE improvement of the originally installed prop that we had before.
It literally pulls the plane through the figures and slows the downlines making it MUCH easier to fly a sequence down low and up front.
We have the Indianapolis Air Show middle of August and we will ensure that MT gets credit where it is due.

Best Regards,
Greg Aldridge
www.aldridgeairshows.com

Britten-Norman Fleet of 'Divi Divi Air' Picture provided by our customer 'Divi Divi Air' of their Britten-Norman Fleet with the new MT-Props on the Netherlands Antilles.

Lancair IVP ...The smoothness is perfect at 2400 and 2700 and only a slight shake at 2500 and 2600, not even enough to worry about...
I also saw 3000 fpm climb at full power from 5K to 8K. The most I have seen, with half fuel and one person.
I also leveled at 12K and did all the rpm's and then set up my normal cruise power 65% or 30/2400 and my IAS was exactly 6 kts faster, just like Martin said it would be.
I showed 192 KIAS for a TAS of 233 on 24 gph, for what it's worth.
And after the flight I took these pictures to show that the super paint job survived without a mark...

Many Thanks,
Jim Hergert

Do228-202(K) in Africa Picture of a Do228-202(K) with the new MT-Props from our customer Advanced Aviation.
The airplane is in service fot the UN in Africa since mid July 2007.

Bandit with MTV Prop ... Got some good numbers going and coming, within a knot or two and 20 rpm of my old prop, which was the absolute best prop I have ever flown.
So, in a word, I love it! I don't fear rain anymore and it looks cool...attached is a pic....see ya!

Rob Ray