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HomeAircraftHelicopterHelicopter Main Discussion › Engine breakin
02-03-2013 03:39 AM  5 years agoPost 1
imranrajputt

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PK

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Guys in breakin after 5 to 10 flights in normal mode for tuning engine in idle 1 with governor or without governor?
Thank You

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02-03-2013 04:07 AM  5 years agoPost 2
honda411

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Surprise, AZ USA

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Without governor linear curve

HeliDirect Field Rep, Synergy N7 w/ OS 105, Torq Servos, Cyclone/ Rail blades

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02-03-2013 04:12 AM  5 years agoPost 3
AWittleWabbit

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O.C., CA

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I second that, no gov.

Heli-itis sufferer.

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02-03-2013 06:04 AM  5 years agoPost 4
helixangle

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Mamaroneck, NY - USA

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you have one tank to break the motor in...one

lets say hyper 50 trex 600

set factory needles plug a smidge, ilde 1 or 2 - whichever to target HS 2050, normal liniar 0 to 70

lift off, if after 20 seconds all looks good, get to your idle up and hammer the heli as hard as you know how for the remainder of the flight.

after you land you will have properly CUT the ring to the SLEEVE thus insuring the highest level of compression

next tank idle up and tune. you should be tuning to the RPM your going to be running.

Plug...one rule the higher the compression the colder the plug IE summer hotter plug choice winter reduce to where it's appropriate

most important what people refer to as the low needle is actually called the mixture control screw, and this has very little to do with idle, and has a lot to do with proper atomization of fuel mixing with air at point of intake.

follow the above and your motor will be strong, it will PULL, don't lean run it and it will run long.

barring hyper 50 and it's known bearing issue

YS 91 SR over 1100 flights in 2.5 year period before swap to 3DS

Be sure the juice is worth the sqweeze
Remember life is hard...even harder for stupid people

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02-03-2013 12:58 PM  5 years agoPost 5
mystar60

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Clifton, NJ

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Agree, no governor on while breaking it in. Tune engine slightly rich, fly around do loops, rolls, flips.
The key in breaking in the engine is to not over load it and not over heat it as well.
You do not have to hover for X amount of tanks leaning the motor as you go.

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02-03-2013 01:34 PM  5 years agoPost 6
JWatson

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Mustang, OK

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Agreee 100% with Mystar....

Dont overload it for the first 5-10 flights.... You should notice if done correctly, the engine in need of a few clicks leaner mixture through out the process...

While there is no set time, usually the engine will let you know its broke in and just wants to be flown.... usually within 5-15 flights...

Jarrett Watson
http://jarrettrc.wordpress.com/

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02-03-2013 02:42 PM  5 years agoPost 7
helixangle

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Mamaroneck, NY - USA

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hey kevin

Still have the sr I'll even let you run it.
10 bucks my 5 year old motor has more compression than your 105...don't be afraid of the truth brother...

Love it...proof about how people don't read directions, I won't dispute how a person tunes an engine, but every engine manual I've read... Os or ys clearly states in black and white "do not have to break in motor"

Biggest problem with the hobby... Reading comprehension

Be sure the juice is worth the sqweeze
Remember life is hard...even harder for stupid people

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02-03-2013 02:52 PM  5 years agoPost 8
tayas

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North East of the USA

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Johnny..........RTFM

Pilot,Pilot

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02-03-2013 02:54 PM  5 years agoPost 9
helixangle

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Mamaroneck, NY - USA

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I know...

and for the record...the reading thing wasn't directed at you Kevy...you know I love you, you big old man candy you

Be sure the juice is worth the sqweeze
Remember life is hard...even harder for stupid people

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02-03-2013 02:55 PM  5 years agoPost 10
Nycatt

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New York

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Here goes Johnny-Tuna again....

That sounds good. Johnny-Tuna is your new field name.




Team Synergy
Rail Blades
MKS Servos
Thunder Power
Vteam

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02-03-2013 06:11 PM  5 years agoPost 11
flycatch

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Barstow, California

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Test stand nothing else.

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02-03-2013 08:31 PM  5 years agoPost 12
MartyH

rrProfessor

USA

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Put it in the heli and make three or 4 short flights without governor. It's not runtime so much as complete heat cycles that break an engine in. Let the engine cool completely between flights.

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02-03-2013 09:32 PM  5 years agoPost 13
helixangle

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Mamaroneck, NY - USA

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Heat cycles, test stands, no governor...BS

go look it up on the web, page after page of proven engine break in, 4 stroke two stroke.

goal: seat the ring to the cylinder wall essentially cutting the ring to the sleeve through abrasion.

If any of you don't believe...the hatch marks in a new sleeve are there for a reason, oh what you didn't know they can produce a polished perfectly smooth surface and they only give us the half finished crap. The reason for the hash marks: cut the ring, why only in one flight: the hatch marks cut the ring in turn the hatch marks are sacrificial in the sense that the cutting smooth the sleeve as well, if you don't get both in the same one flight the hatch marks will retain fuel and the fuel will glaze in the marks.

now I'll tell you that I didn't want to believe this myself, but the Master Mechanic who gave me this wonderful little nugget has more academic and practical machine and mechanical knowledge in his pinky nail than 10 of you put together.

Been doing that way ever since and he is right, strong, long running motors, never had the real power from a nitro until I went this way.

Be sure the juice is worth the sqweeze
Remember life is hard...even harder for stupid people

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02-03-2013 11:32 PM  5 years agoPost 14
JWatson

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Mustang, OK

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Wow...

Jarrett Watson
http://jarrettrc.wordpress.com/

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02-03-2013 11:44 PM  5 years agoPost 15
wrongler

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Brewerton, New York

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No one seems to be disagreeing with helixangle. Is there a reason?

Bill Whittaker

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02-03-2013 11:50 PM  5 years agoPost 16
mystar60

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Clifton, NJ

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He is off his medication today

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02-04-2013 12:00 AM  5 years agoPost 17
mystar60

rrVeteran

Clifton, NJ

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One thing I will say is that the OS manual does state to run-in/break-in the engine.
And that is in B&W

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02-04-2013 12:26 AM  5 years agoPost 18
777ER

rrApprentice

Westchester county, NY, USA

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If any of you don't believe...the hatch marks in a new sleeve are there for a reason, oh what you didn't know they can produce a polished perfectly smooth surface and they only give us the half finished crap. The reason for the hash marks: cut the ring, why only in one flight: the hatch marks cut the ring in turn the hatch marks are sacrificial in the sense that the cutting smooth the sleeve as well, if you don't get both in the same one flight the hatch marks will retain fuel and the fuel will glaze in the marks.
While the hash marks does serve a purpose, I don't think it's mainly just to cut the ring.
Hash marks helps to retain oil in the cylinder walls for lubrication reason.

The general type 4 stroke engines have an oil scrapper ring which scrapes excessive oil on the downstroke to minimize oil being burnt in the combustion chamber. Usually is on the 2nd or 3rd ring depending who makes the engine.

Doesn't need it on a 2 stroke as much as 4 stroke...2 stroke burns the oil either way.

-Chris

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02-04-2013 12:38 AM  5 years agoPost 19
helixangle

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Mamaroneck, NY - USA

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@mystar
You see you say you love me but you never show it, listen to me when we're cuddling in bed together... They increased my medications silly

Can't remember where last I read an OS manual to be honest kinda felt a little put out when I had to spend 450 for a motor and then another 200 on a carb conversion kit to get it to run proper. However bravo to OS brilliant business model... Or should I say racket.

777er not so much as you answered your own statement
Doesn't need it on a 2 stroke as much as 4 stroke...2 stroke burns the oil either way.
BING BING BING BING BING BING BING BING BING BING and wongler is our winner!

@wongler, because they are still trying to figure out why they give the engine break in advise they do I can answer that question -- that's the way the person before them taught them.

like I said, I didn't believe it myself, had to prove it wrong, but I couldn't and that's why...Kevin, my 91 flies like your 105, when I flew it, on a couple occasions.

Be sure the juice is worth the sqweeze
Remember life is hard...even harder for stupid people

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02-04-2013 01:30 AM  5 years agoPost 20
777ER

rrApprentice

Westchester county, NY, USA

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777er not so much as you answered your own statement
Doesn't need it on a 2 stroke as much as 4 stroke...2 stroke burns the oil either way.
That was for the oil scraper ring, not the hash marks.

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