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murphy-rebel@dcsol.com at 23:28:08 on 28 May 2000.
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Engine could be breaking in and spinning up a little easier. Using the power
that was consumed seating rings etc, to now pull the plane a little harder.
The 912's do it! Or you could be starting to let it fly "itself" now that
you are getting more comfortable with it, instead of guiding it's path. Kind
of like adding the music in Iron Eagle 2 to go faster x-country in their
Jets!
A note on engine break-ins. I have proved once again that a new Zero'd
engine should be flown balls to the wall for the first 2 hour Minimum
flight, with only slight power changes to seat the rings etc. 19 hours on my
chrome cylinder'd O-320-C2A and I put in the first quart of Phillips 20W50
Mineral yesterday. It was actually down 2, but I only filled it back up to
the 7 quart mark! I had broken in my O-470-L in my old C182 about 7 years
ago the same way and it only used a quart every 15 hours. O-470's commonly
are considered normal and perfectly fine, eating 1 quart every 4 hours!!
Also used the same method when I test flew Howards Cermichrome cylinder'd
O-320-E2D. All you builders with your new engines sitting waiting for their
day, be sure to only run up for short period to check everything for leaks,
etc. Then push it to the runway threshold, fire it up, put the boots to it
and don't run it below 2400 R.P.M. for the first 2 hours. Change R.P.M.
about every 10 minutes by about 50 R.P.M. up and down from 2400 to full
power. (do not exceed redline of course) Do not make a flight any shorter
than this (if at all possible) or you will eat oil for ever. I usually see
the cylinder and oil temperatures drop at about 1 hour and 45 minutes,
signaling things have seated in!
Blues skies,
Wayne G. O'Shea
www.irishfield.on.ca
-----Original Message-----
From: rebelair <
rebelair@idirect.com>
To: Murphy Rebel Builders List <
murphy-rebel@dcsol.com>
Date: Sunday, May 28, 2000 9:57 PM
Subject: RE: Rebel engine mounts
Hi Ian
You should come & watch a few of my landings with the 0320 hanging way out
front. After you watch, you will no longer worry about the engine ripping
loose.
What I worried about was the amount of vibration coming into the cockpit
from the engine. This will also have a long term effect on the longevity
(SP?) of your installation. Again, I wasted my time worrying about things
that did not amount to a hill of beans as we say around here. As they keep
saying, build the Rebel as close as possible to plans, use good careful
practice & you will enjoy this great airplane for a long time.
What makes me say this is that I had another wonderful long flight in the
Rebel yesterday & then asked myself 'Why am I not flying this thing more?'.
It is great to fly this airplane where this is some much room, such a great
climb & reasonable cruise speed. This airplane seems to be getting a bit
faster - Wayne or Bob does this make sense i.e. is the engine breaking in &
producing more HP?
Happy building
Brian #328R
-----Original Message-----
From: Bob Patterson [mailto:
bob.patterson@canrem.com]
Sent: Sunday, May 28, 2000 9:58 AM
To: Murphy Rebel Builders List
Subject: Re: Rebel engine mounts
No, no, and yes !! ;-)
.....bobp
-----------------------------------orig.----------------------------------
At 09:17 PM 5/28/00 +1000, you wrote:
G'day
I have just finished installing the engine mounts, with all those rivets
and bolts, when suddenly I was was struck with the realization that the
whole engine was held in by those tiny shoulders on the Fus86.
Should those shoulders break, there goes your engine. None of those
bolts or rivets would stop the engine from tearing loose!
Is there any history of these failing? Has anyone fitted a secondary
device (eg cables) to restrain the engine? Am I worrying unnecessarily?
Regards
Ian Donaldson
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