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HelicopterEngines Plugs Mufflers Fuel › Help with OS 50 break in
04-28-2004 01:27 PM  13 years agoPost 1
GRANT ED

rrNovice

Australia

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My engine for my Rappy 50V2 has arrived. I would like to break the engine in on the bench to get it sorted before fitting it to the heli. Being a ringed engine I thought the break in would be a bit different to my non ringed engines. In the instructions it says to run it rich for the first few tanks ad then to lean it out. Same as my ABN engines.
My questions are
What prop do I run?
What RPM do I run? Idle? Half? Full throttle?
I know some are thinking just put it in the heli and fly, but there is one big problem. I cant fly, yet. I am a begginer to heli's and this is my first one.
I would like to make sure the engine is sorted before I fly. Give me one less thing to worry about.

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04-28-2004 01:32 PM  13 years agoPost 2
Doug

rrElite Veteran

Port Saint Luice Florida....

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You would be better served to just put it in the heli and run it at a rich "four stroke" for a couple of tanks then lean slightly and avoid WOT. After the first gallon you can set it for "best running".

First member of Member of Bearings Anonymous

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04-28-2004 01:38 PM  13 years agoPost 3
cwhover

rrApprentice

El Paso, TX

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GRANT ED
I was in much the same situation as you are last year when I started. I actually think a newbie learning to fly is perfect for engine break in. You set it rich, and the 50 makes plenty of power for learning to hover, and the learning stage heat cycles the engine for a great break in. You spool it up and try to hover it, then set it down and calm your nerves. As you get better, the length of the heating cycles increases, and as the engine breaks in you can start to adjust the needles as you go. I broke my OS 50 in this way in my heli, and it is a runnung beast.

Carl
VISA field rep

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04-28-2004 02:29 PM  13 years agoPost 4
TOSH

rrElite Veteran

UK.Peterborough

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OS 50 break in

Step 1. Bolt in heli.

Step 2. Set rich.

Step 3. Fly heli.

Job dun.

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04-28-2004 03:35 PM  13 years agoPost 5
G.Man

rrProfessor

Bristol

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Tosh

you forgot step 4

refuel, fly again repeat for half a gallon and then lean gradually


Don't Email me as I wont reply - PM Only (spam countermeasures)

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04-28-2004 04:04 PM  13 years agoPost 6
TOSH

rrElite Veteran

UK.Peterborough

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sorry

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04-29-2004 02:09 PM  13 years agoPost 7
GRANT ED

rrNovice

Australia

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Cheers guys. Guess I'll just bolt her in and go flying.
I was under the impression that ringed engines can be unreliable when they are running in. Just didn't want to have a flame out on my first flight.

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04-29-2004 06:27 PM  13 years agoPost 8
nivlek

rrProfessor

Norfolk England

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I'm currently running in my O.S. 50 in a fixed wing machine.I usually run
my heli engines in this way unless I don't have a suitable fixed wing machine to fit the engine in.I am using a APC 11x7 propellor with a
mini-pipe.I have run about half a gallon through so far and will set the
engine up on a full tuned pipe before fitting it into my heli.This way
enables me to easily tune the pipe for maximum power about 1000
rpm below the rpm I intend to use in the heli, which gives a good power boost but also helps to maintain a constant head speed.
I have run heli engines in while in a heli, but prefer to give them a good
thrash in a fixed wing first which allows me to run the engine flat out
for a long period ensuring that when fitted to my heli I will have no doubts about reliability etc.

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HelicopterEngines Plugs Mufflers Fuel › Help with OS 50 break in
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