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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › Break in questions
11-04-2004 02:27 PM  13 years agoPost 1
lrogers

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Mobile, Al

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When I get my first "real" nitro bird, I plan to get an OS engine to power it, probably the Os 50 or Os 50 Hyper. I've downloaded the manuals and I'm a bit confused about break in procedure.
The manual states that the engine can be broken in by just running the engine rich in the helo, about 2 turns richer than "normal". It says that "normal" is 2 turns from closed. 4 turns sounds excessive to me, but since I don't have the engine yet........
How do you fellows break in your engines?
Would 15% Cool Power be an acceptable fuel to use? I envision myself becoming a "sport" flyer, no wild 3d stuff.
Thanks for you in sights.

Larry Rogers - R/C Helicopter Pilot

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11-04-2004 03:46 PM  13 years agoPost 2
Darksider

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Derby United Kingdom

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your quite right, at those settings the engine wouldn't run it'd keep stopping because it was too rich, i tend to go for about a quarter to half a turn rich, it helps to know the sound an engine makes when it's rich though, so it might be a good idea to find somebody experienced local to help you get it set up right, joining a club is a good idea when starting, i learned from experience because i didn't when i first started and i'd have made so many less mistakes if i had.

good luck

Gareth

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11-05-2004 05:10 AM  13 years agoPost 3
Comanche Man

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U.S.A.

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what I have always done to my engines when breaking in is know about what they run normally and then run about 3/4 to a turn out from that and after about the first gallon start leaning it two clicks at a time until it is running sweeeeeet.

Fear my name on Xbox live

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11-06-2004 02:13 AM  13 years agoPost 4
Jason WAI

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Hong Kong

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I'm breaking in my Hyper. In the manual, it said " 1.5 turn open from the normal postion" for the first few flight (p.20 ) The normal position should be about 1.5 turn (p.18) , I think.

I start from 3.0 turn at the begining........very hard to start.....and lateron adjust it to roughly 2.5 turn. its' ok. After about 10 flights, the main needle is now about 2.0 turn .

Today, will continue the breaking in process today.

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11-07-2004 02:01 PM  13 years agoPost 5
ChrisMoore

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Bay Village, OH

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where have you fellas found the OS .50 Hyper Manual? I am reading and researching for buying a heli in a few months and would like to get as much info as possible.

thanks,

Chris

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11-08-2004 12:17 AM  13 years agoPost 6
Jason WAI

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Hong Kong

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Chris

the manual is come with the engine. Besides, you could download it in OS web site, try this


http://www.os-engines.co.jp/english/index.htm

OS 50 Hyper:

http://www.os-engines.co.jp/english...h/max50main.htm

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11-08-2004 12:34 AM  13 years agoPost 7
Ted Toth

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Myrtle Beach S.C.

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Would 15% Cool Power be an acceptable fuel to use?
15% is fine for your intended use
Ringed engines are very easy to run in
run rich for the first few tanks and then start leaning it out
slowly
ring engines make more power with use and they tend to start
easy and are not so sensitive to temp and humidity changes
good luck with your new setup


.

You don't stop laughing because you grow old, you grow old because you stopped laughing.

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11-09-2004 11:24 AM  13 years agoPost 8
Jason WAI

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Hong Kong

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isn't it better to run the fuel that you would fly after "break-in" process ?

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11-09-2004 03:27 PM  13 years agoPost 9
lrogers

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Mobile, Al

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Thanks for your thoughts fellows. I can't wait until the bonus checks come out so I can offically join your ranks.

Larry Rogers - R/C Helicopter Pilot

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11-09-2004 03:41 PM  13 years agoPost 10
Raffy

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Chicago, Illinois

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Follow the directions properly for breakin and don't rush trying to lean out the engine as if you want to get to the moon.
Fly the heli as much as you can on a rich setting where the heli is flying without bogging for a long while - maybe 2 gallons of fuel.
When the engine has past it's breakin period, you will be able to feel the need to lean the carb a few clicks.
Be patient if you want your engine to run good.
I suggest you use CP30% - good engine performance from breakin to 3D flying.

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11-09-2004 10:52 PM  13 years agoPost 11
Jason WAI

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Hong Kong

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Break in process could / might last for 20 - 30 flights.

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11-09-2004 11:11 PM  13 years agoPost 12
ChrisMoore

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Bay Village, OH

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Through my experience with engines over the past 11 years in the plank world I was under the impression that ABC type engines show a signifigant increase in power following break-in. While it may be true that ringed engines pick up more power as they break in, I think that the ABC gets most of its power over time whereas the ringed engine is a little more powerful in the beginning. Not that it matters...but anyways.

Chris

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11-10-2004 08:29 PM  13 years agoPost 13
SPB

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Athens - Greece

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20-25 tanks is what all good pilots suggest. Of course the longer the brake in the better for the overall engine performance. If you are not in hot dog 3D flying there is no reason to lean the engine trying to take even the last drop of power from her.

Also it is suggested to start with a specific brand and type of fuel and stick with it for the entire life of the engine. Going up to nitros suppose to be fine but not going down again.


Sotiris
myhelis.com Flying Team

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11-10-2004 09:49 PM  13 years agoPost 14
Jason WAI

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Hong Kong

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Girard Ibanez, may read page 18 & page 20 in the manual . This is what I think where they are........

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