Mailing List lml@lancaironline.net Message #68156
From: Bill Harrelson <n5zq@verizon.net>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Propeller options for the Legacy?
Date: Thu, 21 Nov 2013 19:59:28 -0500
To: <lml@lancaironline.net>
Adam,
 
Sorry to hear about your prop. Glad to hear that there were no injuries.
 
I have no particular expertise with propellers but here is some of what I have found using MTs.
 
We have MT props on both our 320 and our IV. About 12 years ago MT tried a new blade seal design. On our 320 it slung grease. They replaced that seal with the old style (no charge) and it’s been fine for the last 10 years. The MT on our IV has never slung grease.  It has been my experience that the MTs will govern down to a much lower RPM than the Hartzells.  The prop on our 320 governs down to about 1000 rpm, the one on our IV down to about 1200. This produces a very coarse pitch that, while not fully feathered, produces a drag profile much closer to feather than the Hartzell.
 
The MT comes painted white and you have a few choices of tip color. They do tend to loose paint, especially just behind the leading edge and at the tips. I spoke to Gerd, the owner of MT, at SnF last summer and he suggested sanding the paint just behind the LE so as to feather it into the nickel leading edge (which extends under the start of the paint by about 1/4 inch). I have done this to mine and have had no further paint problems.
 
Good luck on this. I hope to see your Legacy back in the air soon.
 
Bill Harrelson
N5ZQ 320 2,150 hrs
N6ZQ  IV  400 hrs
 
 
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