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#1
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WELL HERE GOES, I AM ABOUT TO VENTURE INTO A SUBJECT THAT I HAVE HAD SOME PERSONAL EXPERIENCE WITH. (UNLIKE SOME OF THE OTHER DRIVERS OUT THERE THAT SEEM TO HAVE ALL THE ANSWERS) ON ANOTHER THOUGHT, WHEN YOU SPEND AS MUCH MONEY AND WAIT THE AMOUNT OF TIME I DID FOR A SET OF PROPS YOU BETTER LIKE THEM.
I HAVE INSTALLED A SET OF 3 BLADE MT (NOT MG <G>) PROPELLERS ON MY 1968 337. I HAVE BEEN ASSOCIATED WITH THIS PETICULAR AIRCRAFT SINCE 1977. I HAVE JUST OVER 2000 HOURS IN IT. AFTER I MADE THE HUGE DECISION TO BE THE SECOND 337 WITH THIS CONVERSION I REALLY WONDERED IF I MADE THE RIGHT CHOICE. AFTER FINALLY HAVING THEM INSTALLED THEY ARE GREAT. MUCH SMOOTHER ON THE RUNWAY AND IN THE AIR. MUCH QUIETER? MAYBE A LITTLE BUT IT IS DEFINETLY A DIFFERENT SOUND. CLIMB PERFORMANCE? YOU BET, I CONTINUE TO ENJOY THE CLIMB DIFFERENCE. MAYBE AROUND 2-300 FPM IN MOST CASES. SPEED, DID NOT SEEM TO EFFECT THE CRUISE PERFORMANCE ONE WAY OR THE OTHER. I DID GAIN 60 LBS USEFUL. AND AS JERRY TOLD ME THE ONLY TIME THEY LOOK BETTER THAN THE 2 BLADE IS WHEN ITS PARKED. THEY DO HAVE A COMPLETELY NEW SPINNER FRONT AND REAR THAT REALLY LOOK A LOT DIFFERENT. MORE MUSCLE LOOK. I HAVE ALMOST 100 HOURS ON THEM SINCE JANUARY AND OTHER THAN A LITTLE MORE GREASE AROUND THE HUBS (WHICH MT IS LOOKING INTO) I HAVE NO REGRETS. WOULD I DO IT AGAIN? NOT SURE. IT REALLY TOOK A LONG TIME TO GET THEM. NOT SURE WHAT TO EXPECT AFTER 3 - 5 YEARS. (THEY DO HAVE A 6 YEAR TBO) ALL OVERHAULS ARE DONE IN FLORIDA AT THIS TIME. THEY HAVE A NICE STAINLESS STEEL LEADING EDGE THAT IS VERY REASONABLE TO REPLACE IF NEEDED. ACCORDING TO MT THEY HAVE A LOT OF MALIBU CONVERSIONS WITH THEIR COMPOSITE PROP. REDUCED VIBRATION AND SMOOTHER OPERATION MAKES THEM BETTER FOR THE MALIBU. BTW, THEY ARE ACTUALLY MADE OF BEECH WOOD. |
#2
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prop and/or engine change?
Herb - you've had a lot of time now with the 3-bladed MT Props...would you do it again? any new pirep on them from what you originally posted?
All - I am flying fine, but props and governors getting long in tooth since last overhaul. Looking at overhaul of the original 2-blade McCauleys or replacing. pireps from anyone on other options of course are welcome. on a related note - the rear engine is getting near TBO. Yes I could top overhaul it and extend, or full overhaul. or buy new same size. But thought I would get any pireps on other engine options than the TSIO-360 |
#3
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Fifteen years with MT props and I would definitely do it again. In fact I just purchased another 3 blade MT for the Vans RV-8 that I am building. What a huge difference they make.
If you look at the engines available for your plane it's going to fit on one line. Unless you get some kind of field approval or purchase an STC that is already out there (there's only 1 that I can think of) you don't really have any choices. It comes down to how much time do you have? Nothing wrong with a good shop doing an overhaul but it will be grounded a lot longer than a factory exchange. I've done 2 factory reman's and both so far have been great.
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Herb R Harney 1968 337C Flying the same Skymaster for 47 years |