Keep fuel and oil out of your plane during engine burn in
12-02-2011, 01:14 AM
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Keep fuel and oil out of your plane during engine burn in
Cut an empty bottle, attach it to the muffler will keep your plane clean of fuel after New engine burn-in:
[youtube]http://www.youtube.com/watch?v=xBuRCFeHvQk[/youtube]
[youtube]http://www.youtube.com/watch?v=xBuRCFeHvQk[/youtube]
12-20-2011, 06:15 PM
#2
RE: Keep fuel and oil out of your plane during engine burn in
I haven't broken motors in on a plane before... .is that common? I break my engines in a test stand before putting in the plane.
12-26-2011, 07:28 AM
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RE: Keep fuel and oil out of your plane during engine burn in
ORIGINAL: KitBuilder
I haven't broken motors in on a plane before... .is that common? I break my engines in a test stand before putting in the plane.
I haven't broken motors in on a plane before... .is that common? I break my engines in a test stand before putting in the plane.
Folks who buy 'RTF' models probably do not own test stands and do their break in on the plane.
My brother and I had been flying for several years before he built a test stand. We had only OS and Thunder Tiger two cycle engines for a long time and they required so little break in that doing it on the plane worked fine.
The first Magnum four stroke he bought prompted the test stand. It was terrible on the plane. That engine (a little .61) took a full gallon of fuel to break in. That's a lot of run time.
12-26-2011, 07:42 AM
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RE: Keep fuel and oil out of your plane during engine burn in
Do it properly on a test stand. It is easier and SAFER. If you do not have one then make one. I made a "One size fits all" stand.
Ed S
Ed S
12-27-2011, 03:57 AM
#6
RE: Keep fuel and oil out of your plane during engine burn in
ORIGINAL: Ed Smith
Do it properly on a test stand. It is easier and SAFER. If you do not have one then make one. I made a ''One size fits all'' stand.
Ed S
Do it properly on a test stand. It is easier and SAFER. If you do not have one then make one. I made a ''One size fits all'' stand.
Ed S
Just curious as to why yours is "proper" and "SAFER".
I see nothing wrong with doing the breakin with the engine mounted on the airframe.
12-27-2011, 11:30 AM
#9
RE: Keep fuel and oil out of your plane during engine burn in
I have always done it on my model as well. One thing I found is that you have to be careful what you connect to the outlet of the engine as the exhaust leaving the end of the muffler can be quite hot and will melt the plastic or vinyl creating a very nice mess. Ask me how I know.
I purchased a 2' long peice of high temp hose from an auto aprts store that I route into a plastic milk jug with holes cut in the sides to catch the slime but let the exhast escape. It works great.
I purchased a 2' long peice of high temp hose from an auto aprts store that I route into a plastic milk jug with holes cut in the sides to catch the slime but let the exhast escape. It works great.
12-30-2011, 06:14 AM
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RE: Keep fuel and oil out of your plane during engine burn in
ORIGINAL: TomCrump
Just curious as to why yours is ''proper'' and ''SAFER''.
I see nothing wrong with doing the breakin with the engine mounted on the airframe.
ORIGINAL: Ed Smith
Do it properly on a test stand. It is easier and SAFER. If you do not have one then make one. I made a ''One size fits all'' stand.
Ed S
Do it properly on a test stand. It is easier and SAFER. If you do not have one then make one. I made a ''One size fits all'' stand.
Ed S
Just curious as to why yours is ''proper'' and ''SAFER''.
I see nothing wrong with doing the breakin with the engine mounted on the airframe.
I don't either. Been doing it for years, I have yet to see anything go wrong except a wet pant leg from the exhaust spewing oil when I didn't use a rubber garden hose.
Pete
12-30-2011, 10:07 AM
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RE: Keep fuel and oil out of your plane during engine burn in
curious as to why yours is ''proper'' and ''SAFER''.
"Proper"
Before I put any engine in any airplane I mount it to a test stand with the intended prop and get all the settings established for a properly running engine. High throttle, low throttle and everything in between. Then, if the engine is installed in the airplane and does not run properly, the fault is not the engine setting is it? I have seen many people seem to struggle getting an engine running properly in the airplane.
"Safer"
Whenever I start an engine the only "Stuff" in front of the engine is about 1/3 of my arm and a hand with a starter. I never stand in front of it. Standing behind the prop arc to start the engine is a little difficult with a fully assembled airplane. The wing is usualy in the way. Those that position themselves in front of the airplane to start an engine have to hold the airplane with one hand and start with the other. When the engine starts the airplane still has to be held, tied down or not. So now we have somebody with one arm in the prop arc holding the airplane and the other arm and hand in the prop arc removing the glow driver and adjusting the carb, and unless one is a complete contortionist ones face dangerously close.
Now realy, do I have to go into more detail to explain the "UNSAFE" conditions here?
I have been doing this since 1954, I have shed blood about twice. I speak from experience
P.S.
Engine "Burn" in and "Break" in? Surely a poor choice of words. Although probably true in lots of instances.
Ed S
12-30-2011, 12:42 PM
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RE: Keep fuel and oil out of your plane during engine burn in
ORIGINAL: carrellh
That engine (a little .61) took a full gallon of fuel to break in. That's a lot of run time.
That engine (a little .61) took a full gallon of fuel to break in. That's a lot of run time.
12-30-2011, 04:56 PM
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RE: Keep fuel and oil out of your plane during engine burn in
An engine being broken in doesn't necessarily want to be "cooler". You're looking to thermal cycle its components as many times as you can as fast as you can to get them stabilized . Short 1-2 minute runs (with a 10 minute or so cool down) thermal cycle to components faster than driving around the sky with a slightly fat needle setting.
For a lot of people flying it fat is fine since they don't have the patience to do it on the ground. The difference in final performance between the two approaches is something I'd notice, but a sport flyer may not. Its the difference between an average example and one that's above average.
For a lot of people flying it fat is fine since they don't have the patience to do it on the ground. The difference in final performance between the two approaches is something I'd notice, but a sport flyer may not. Its the difference between an average example and one that's above average.
12-30-2011, 04:59 PM
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RE: Keep fuel and oil out of your plane during engine burn in
ORIGINAL: BarracudaHockey
Interesting. I've been doing it a long time in the plane with no issues, it gets better cooling in flight.
Interesting. I've been doing it a long time in the plane with no issues, it gets better cooling in flight.
I agree. I only have 12 years in the hobby and I've seen more youtube videos of accidents happening with a engine test stand than breaking-in a engine in the plane. But all it takes is one second of not paying attention, and no matter what we use we can get hurt. I've seen ol'timers and new timers get hurt doing dumb things. Our engines and props do not discriminate, they don't care if you have 50 years in the hobby or 1 year.
Knock on wood- I haven't got hurt yet.
[youtube]http://www.youtube.com/watch?v=1Pk9y5t1N9Q[/youtube]
Pete
12-30-2011, 05:57 PM
#17
RE: Keep fuel and oil out of your plane during engine burn in
Breaking in on a stand eliminates all other variables that are found on an airplane and especially a new airplane, hence safer.
That really shouldn't have to be explained.
You CAN break in on the plane, many do. You CAN walk across the street at any point, many do.
Safer to do it at the crossing.
That really shouldn't have to be explained.
You CAN break in on the plane, many do. You CAN walk across the street at any point, many do.
Safer to do it at the crossing.
12-30-2011, 09:42 PM
#18
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RE: Keep fuel and oil out of your plane during engine burn in
ORIGINAL: Clean
Breaking in on a stand eliminates all other variables that are found on an airplane and especially a new airplane, hence safer.
That really shouldn't have to be explained.
You CAN break in on the plane, many do. You CAN walk across the street at any point, many do.
Safer to do it at the crossing.
Breaking in on a stand eliminates all other variables that are found on an airplane and especially a new airplane, hence safer.
That really shouldn't have to be explained.
You CAN break in on the plane, many do. You CAN walk across the street at any point, many do.
Safer to do it at the crossing.
Kurt
12-31-2011, 04:06 AM
#19
RE: Keep fuel and oil out of your plane during engine burn in
ORIGINAL: Bozarth
What are all of the other variables that are found on an airplane that make it ''less safe''? You made a strong conclusion without mentioning any premises.
Kurt
ORIGINAL: Clean
Breaking in on a stand eliminates all other variables that are found on an airplane and especially a new airplane, hence safer.
That really shouldn't have to be explained.
You CAN break in on the plane, many do. You CAN walk across the street at any point, many do.
Safer to do it at the crossing.
Breaking in on a stand eliminates all other variables that are found on an airplane and especially a new airplane, hence safer.
That really shouldn't have to be explained.
You CAN break in on the plane, many do. You CAN walk across the street at any point, many do.
Safer to do it at the crossing.
Kurt
12-31-2011, 03:42 PM
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RE: Keep fuel and oil out of your plane during engine burn in
Safer for a new engine maybe because you can shut it down if something weird starts to happen (like pre-ignition) before there's any permanent damage. Backplates and heads coming loose are fairly common.
Safer for the human? I dunno.
Safer for the human? I dunno.
