I would second Robert’s comments below for N437RP, my IV-P with the same basic MT 4-blade, but not full feathering model. See Bill Harrelson’s comments on this over the weekend…specifically that the MT will control to a lower RPM than the Hartzell...thereby minimizing drag in max coarse pitch. Not quite as low-drag as full feathering, but very close, at much less cost/complexity.

 

Two issues of note: I have is keeping paint on the blades…my problem, as I’ve managed to get it into frozen ice crystals a couple of times. This peels paint as well as sandpaper… L  It’s also just a bit slower (2-3 KTS?) when run side by side against a 3-blade Hartzell scimitar at the same power settings… This was not a scientific test, but as good as we could do with two airplanes side by side… I’ve decided I’d gladly take my smooth operation--at all power settings--in trade for a couple of knots of speed.

 

I’d buy/install this prop again, given the choices.

Bob

 

 

Tom,

 

For the TSIO550 on my ES-P I chose the 4-blade feathering MT prop: MTV-14-D-C-F/CF195-30b.  RDD installed the de-ice boots and that did not disturb the perfect balance and incredibly smooth performance.  The wood core dampens vibration, the composite outer layer protects the prop from abrasion, and the metal leading edge is in perfect condition after 350 hrs.   

 

Robert Simon

N301ES

 

 

It is finally time to purchase the propeller for my ES. I have a IO 550N
engine. I searched the archives and didn't see any thread addressing this but if
I missed it I apologize for the redundancy.
I would appreciate any input on why the Hartzell or MT props for this
combination was chosen or other available props that have been used. Thanks in
advance for your input.

Tom
N726TW

 

Blue Skies,

Tom