My 20B had about an hour of running on the dyno before we
started some power runs, and probably 2 hours before we ran WOT power curves up
to 7000 rpm. I was running Castrol mineral based oil, and had discussed
oils and dyno plans with David Atkins before running. He agreed it best
not to run synthetic, and didn’t make any caution about doing the high
power, high rpm with only a couple of hours on the engine. It seems to
have survived just fine. This was not a new engine, just newly rebuilt –
but I think all it needed was new seals.
My could probably get
6 different opinions by asking 5 different people.
Al
Hi
Joe,
The
instructions I got from Bruce Turrentine was to limit RPM's to 4500
for
5 hours on the ground, then 6000 for the next 15 hours. Flight
during
this period only if 6000 is adequate. He wants to keep temps
below
200 F during this time also.
I
don't know how much is needed vs CYA, but I figure after that much
running
time I will have a good feeling about reliability of the system.
Bob
W.
On
Mon, 4 Apr 2005 12:32:23 -0700
<joeh@pilgrimtech.com>
wrote:
>
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
>
>
--
http://www.bob-white.com
N93BD
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