I sent a lot of emails off to four separate distributers of M14P engines and
parts with these kind of questions. Here's a few excerpts from their
responses.
"Our Romanian suppliers of the engine are putting the TBO at 1,500 hrs
based
on using western oils and regular 100 hr/annual inspections and repairs. It
is really a different way of thinking about continued airworthiness. The
engines have proved to be very reliable and short of hydro lock or running
out of fuel have not shown any in flight failures. There are about 300 to
400 of the engines operation in the U.S. now on various models of Yak,
Sukhoi and homebuilts. Clint McHenery operated the first SU26 in the air
show circuit for 4 years regularly punishing the engine far beyond what any
U.S. engine would take. They finally hydro locked the engine at about 1,400
hrs of operation. That is the longest running engine that we are aware of
that operated with U.S.. style of maintenance."
"There is no set TBO on the engine. The Russians overhauled at 5
years/500 hours under the military system. General agreement in the US is
anywhere between 1200 - 1500 hours. We have seen very little wear on the
engines we have overhauled. The reason they need to be overhauled is:
hydraulic lock. Plain and simple. The Russians really designed a
workhorse."
"My own experience with fuel burn is that I always figured a liter a minute
for overall flight and it was always right on. I got to figuring in metric
since all of my fuel and oil and other instruments are in metric,
But roughly that should work out to about 14 gal/hr. This is a low
compression engine of about 6 to 1 so you could use auto fuel if you were
sure it had no alcohol or other harmful additives. Something I could never
convince myself of. A friend of mine has run his Wilga on auto gas
exclusively for about 200 hours. The oil consumption is about 1 liter per
hour.
I installed one of the ADC full flow spin on filters because I really
believe in
clean oil."
Mike
SR - Fairbanks, AK
-----Original Message-----
From: Bob Patterson [mailto:
bob.patterson@canrem.com]
Sent: Wednesday, December 20, 2000 5:23 PM
To: Murphy Rebel Builders List
Subject: Re: Super (Beaver) Rebel MP-14
Hi Rick !
That's a very good question !! Several people claim it can
be as low as 18 gallons/hour - others say it could be as high as
54 gallons/hour !!! I suspect that the real average consumption
is somewhere in the middle of that range ...
Funny thing - NOBODY has asked about OIL consumption ...
some radials can go through a LOT of oil (like ... over a quart/hr. !)
Add those two factors to the stated TBO of only 800 hours
(although they claim they run MUCH longer ....), and you get a
fairly large number for the hourly operating cost !!
Of course, you're talking about an aircraft that will likely
run about $110,000 CAD, finished and WELL equipped --- as the old
saying goes "If you have to ask how much, you can't afford it !" :-)
The S-R 3500 will really appeal to folks who would otherwise
be shelling out over a half a million $$$$$$$ for a refurbished
Beaver - so it's such A BARGAIN that operating cost is no biggie !!!
....bobp
---------------------------orig.--------------------------------------
At 08:39 PM 12/19/00 -0500, you wrote:
I've got a question for anyone who knows about the Radial engine for the
Super Rebel.
WHAT'S THE FUEL BURN ON THAT BABY?
Thanks.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META content="MSHTML 5.00.2614.3500" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>I've got a question for anyone who knows about
the
Radial engine for the Super Rebel.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>WHAT'S THE FUEL BURN ON THAT
BABY?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Thanks.</FONT></DIV>
<DIV> </DIV></BODY></HTML>
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