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Re: [FlyRotary] Performance coatings- bearing
damage?
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
Greetings,
I just talked to Brad
at Performance Coatings, and he said they try to batch items together,
to keep from wasting material. For scheduling purposes, it's
interesting to note that they do piston tops, and rotors on
Wednesdays. They charge $45 for each rotor. The
process includes blasting the rotor faces, spraying on the coating,
and curing it at 350 degrees. They have a fixture that they use
on rotors, which keeps anything from touching the
bearing.
Will the bearing be
damaged at 350 degrees? I'm thinking
there's a good chance it will.
Thanks,
Rusty (still
undecided)
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