Mailing List flyrotary@lancaironline.net Message #15975
From: Russell Duffy <13brv3@bellsouth.net>
Subject: RE: [FlyRotary] Re: Performance coatings- bearing damage?
Date: Tue, 25 Jan 2005 07:39:27 -0600
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
   When I first started flying my coot the rotors were not coated and I was fighting cooling problems and I was seeing oil temps up to 260 degrees on full power climb and cruising at 220 degrees, I then pulled the engine down and coated the rotors without pulling the bearings and had no problems with them.
 After coating the rotors the temp toped out at 220 on climb and dropped to 180 in cruise, at that point that was the only change I made and ran it for several hundred hrs so that should be a good comparison of apples to apples, since then I have made changes that has dropped the temp to 160 on climb and 140 in cruise.
 Ken Welter

This is just the sort of testimonial that I was looking for Ken.  Thanks very much.  I think I'll go ahead with plan A, and have them coated.  If the bearings look damaged when they return, I'll come up with some way to change them.  I should have them in the next few days, and should be able to get them to Performance Coatings in time for their next Wednesday run. 
 
Thanks,
Rusty (now if someone could just tell my installers how my new Trane heat pump is supposed to be wired)
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