Mailing List flyrotary@lancaironline.net Message #7575
From: Marvin Kaye <marv@lancaironline.net>
Subject: Re: 2.85 redrive
Date: Sat, 24 Apr 2004 22:52:26 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
All this talk about 2.85 gear boxes, getting higher into the power curve, improving cliumb performance, etc, is really interesting.  Since 3 of my 6 initial reasons for going rotary were reliability, I'm wondering what running at these higher power levels is going to do in that regard.  I'm pretty convinced that running at 5300-5500 rpms at cruise is a good formula for having an engine that isn't overtaxed and Tracy's experience has borne this out.  Isn't there any concern out there about increased wear to the rotor housings, greater potential for catastrophic failure and so on, at these considerably higher constant power levels?  I hate to be a wet blanket, but what are the real longterm tradeoffs in operating routinely at 15-20% higher power levels?

   <Marv>
 
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