[rebel-builders] Engine Break in
Posted: Sun Feb 19, 2012 11:42 am
If that motor is brand new or freshly overhauled....it should have been in
the air already! I may sound harsh..but I'm trying to do you a favour Mike.
By now you know it doesn't leak oil so drag the brakes on the way to the
runway numbers and have at 'er!
When you do get it in the air, if it's a fresh overhaul, do not come down or
back off on that throttle for 2 hours... unless you have something
indicating you'd better do otherwise. You will see the cylinder/oil temps
drop around the 1 hr 45 minute mark..give or take...showing ring seating. At
least I have for at least 6 fresh engines..some steel..some nickel
chrome..some cermi-chrome. Everyone of them showed temperature drops within
the 1hr 35 to 1hr 55 range.
Wayne
----- Original Message -----
From: "Mike Betti" <mbetti@hughes.net>
To: <rebel-builders@dcsol.com>
Sent: Sunday, February 11, 2007 7:07 PM
Subject: Re: [rebel-builders] Taxi test
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the air already! I may sound harsh..but I'm trying to do you a favour Mike.
By now you know it doesn't leak oil so drag the brakes on the way to the
runway numbers and have at 'er!
When you do get it in the air, if it's a fresh overhaul, do not come down or
back off on that throttle for 2 hours... unless you have something
indicating you'd better do otherwise. You will see the cylinder/oil temps
drop around the 1 hr 45 minute mark..give or take...showing ring seating. At
least I have for at least 6 fresh engines..some steel..some nickel
chrome..some cermi-chrome. Everyone of them showed temperature drops within
the 1hr 35 to 1hr 55 range.
Wayne
----- Original Message -----
From: "Mike Betti" <mbetti@hughes.net>
To: <rebel-builders@dcsol.com>
Sent: Sunday, February 11, 2007 7:07 PM
Subject: Re: [rebel-builders] Taxi test
Thanks for the description, I think you hit on the head. Next weekend
after
the inspection, I am going to drag the brakes down the runway, go back for
a
cool down, then blast off! I'm thinking one trip around the patch, land,
check over. Then take off for a 30 minute flight around the patch at 75%
power.
Mike Betti
----- Original Message -----
From: "Mike Kimball" <mkimball@gci.net>
To: <rebel-builders@dcsol.com>
Sent: Sunday, February 11, 2007 5:23 PM
Subject: RE: [rebel-builders] Taxi test
I'll add my two cents worth on high speed taxi. I did it twice in my
Super
Rebel before first flight. After having done three takeoffs and landings
in
the Super Rebel now I can easily attest to the fact that I was in the
most
danger of bending my airplane during the high speed taxi tests. Getting
the
tail up and not flying was hard. Constantly balancing just enough power
to
get the tail up with speed increasing, yet not taking flight. And the
runway wasn't all that long. About the time I got the tail up dancing on
all the controls trying to stay in control it was time to get the tail
back
down and apply brakes before I ran out of runway. I was probably in the
most danger of groundlooping right after I finished accellerating and
reached my maximum speed, without taking flight, then powered off and
lowered the tail. It would be a much worse ground loop than a low speed
ground loop during the decellerating ground roll after landing. I agree
with Ken about the forces changing rapidly. Left turning tendencies are
there and increased by raising the tail, then you remove power and lower
the
tail reducing and reversing those tendencies. You don't encounter those
rapid changes during a normal takeoff or landing. I would not recommend
high speed taxiing. Much safer to go fly and get the feel of the
airplane,
then bring it in for your first landing on a nice long stabilized final
approach for a three pointer.
Mike
044SR
-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Mike
Betti
Sent: Saturday, February 10, 2007 6:17 PM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Taxi test
Wayne or Bob,
I know it's been mentioned before about this high speed taxi stuff from
you
guys. An older pilot I fly with a lot and also I have learned much from,
wants me to get comfortable with doing this kind of taxi, but me on the
other hand want to get this engine in the air under full throttle before
I
glaze it up.
What is it that you don't like about doing this kind of manuver? Maybe I
can
change my buddys reasoning on this.
I know I have read books on taildragging and the author mentions don't
taxi
on the mains for practice. But I do it anyway in a C140 from time to
time.
Its good practice but can get you in trouble pretty fast.
Mike Betti
----- Original Message -----
From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
To: <rebel-builders@dcsol.com>
Sent: Saturday, February 10, 2007 8:36 PM
Subject: Re: [rebel-builders] Taxi test
Guess I added a 'ed to loop while I read it. The sentence structure
works
perfect for that! LOL
----- Original Message -----
From: "Mike Betti" <mbetti@hughes.net>
To: <rebel-builders@dcsol.com>
Sent: Saturday, February 10, 2007 9:07 PM
Subject: Re: [rebel-builders] Taxi test
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