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Joe, I seriously doubt it. I broken my in
about three hours of ground running and I am not even certain that was
required. The important thing is to break it in using mineral based oil
rather than a synthetic then changing the filter. I Started out at 1000 rpm
and working up in 200 rpm increments letting it run at that rpm for 2 -3
minutes until eventually getting to 2000 rpm then let it back down 1500
rpm. Worked from 1500 up to 2500 rpm in 200 rpm increments, then back down
to 2000 rpm. From 2000 rpm to 3000, 2500 to 3500, etc. At 3500, I
returned to 1000 rpm and worked it up in 1000 rpm increments to 4000 again
staying at each on a couple of minutes. Engine is strong and has run
well for over 150 hours, so must have not hurt it too much. Needless to
say I had a prop on it and had to constantly watch the coolant/oil temps
particularly toward the higher power portions of the run.
Lynn would have the definitive answer on
that.
Ed A
----- Original Message -----
Sent: Monday, April 04, 2005 3:32
PM
Subject: [FlyRotary] Break In
Period?
I have a friend who bought a new
engine form “Hayes Rotary” up here in Redmond, WA. These guys are very
knowledgeable guys. They told him to keep the RPM’s under 4000 for the
first 1,000 – 1,500 miles to allow the engine to “break in”.
I’ve never heard of this for
rotaries. That represents about 20 hrs of running before first take-off in an
airplane (assuming more than idle RPM).
Is this needed?
Joe Hull
Bellevue, WA
Cozy MK
IV
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