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Old Nov 29, 2004, 10:58 PM
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Houston Intercont, Texas, United States
Joined Nov 2002
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airplane engine vs. helicopter

Is there any real difference between a helicopter engine and the same size motor used in a r/c airplane?
Mike
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Old Nov 30, 2004, 01:24 AM
Registered User
Birmingham, Alabama, United States
Joined Jan 2004
426 Posts
The size of the head.
You SHOULD NOT use a plane engine on a heli (overheating problems) but, you can use a heli engine on a plane if it's inside a cowling. If it's out in the open with the prop wash it really won't heat up to proper operating temps. But, it can be done.
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Old Nov 30, 2004, 02:51 AM
Heli pilot
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Royse, Norway
Joined May 2004
362 Posts
the heli engine also has more power, and torque. it is accually more like a rc car engine, than a rc plane engine, but the torque is higher
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Old Nov 30, 2004, 12:36 PM
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Hong Kong, Hong Kong Island, Hong Kong
Joined Apr 2001
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Most heli engines are ringed engines as well. Not many ringed plane engines left anymore.

--Paul
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Old Nov 30, 2004, 10:12 PM
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Corpus Christi, Texas, United States
Joined May 2003
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The carbs are also different. A heli engine spends a lot more time at 75% throttle than an airplane engine. If I had to bet I would guess the timing is a bit different as well.

Kristopher
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Old Dec 02, 2008, 05:07 AM
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PLEASE I NEED TO KNOW THE variation IN THEIR COMPONENTS ie the structural difference and the
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Old Dec 02, 2008, 05:14 AM
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pls does anyone know the difference between the engine components of airplane helicopters and automobiles?
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Old Dec 02, 2008, 07:48 AM
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United States, FL, Jacksonville
Joined Sep 2004
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The helicopter engine has a bigger heat sink, usually a carb optimized for mid range, and most importantly, a shorter crank shaft.
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Old Dec 02, 2008, 01:19 PM
Will fly for food
Maryland
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And they tend to run at higher RPM. So timing is different. Heli engines run in the 17,000 RPM range.
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Old Dec 07, 2008, 01:18 PM
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NY
Joined Jul 2008
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oil + its lubrication is different.
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Old Dec 08, 2008, 04:28 AM
Will fly for food
Maryland
Joined Sep 2004
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The extra oil used is due to the generally higher power settings used in helis.

But Cool Power 15% Aircraft and Heli are the same fuel, same oil content.
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Old Dec 10, 2008, 06:53 AM
piro-maniac........
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United States, CO, Aurora
Joined Dec 2007
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Quote:
Originally Posted by Pinecone
The extra oil used is due to the generally higher power settings used in helis.

But Cool Power 15% Aircraft and Heli are the same fuel, same oil content.
But do they taste the same??!!
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Old Dec 10, 2008, 12:39 PM
Will fly for food
Maryland
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Yeap.
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Old Dec 14, 2008, 03:37 PM
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United States, FL, Jacksonville
Joined Sep 2004
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The extra oil is due to the fact they are at the mercy of the efficency of the cooling shroud and fan and not hanging out in the airstream being cooled by prop wash for the most part. Most heli engine manufacturers reccomend 18 percent oil.
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Old Feb 02, 2009, 04:06 AM
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SO, on a scale of 1-10. with one being snap-in-and-go, and ten being impossible. How hard would it be to take a "Traxxis TRX .15 pro" engine, and put it in a similarly sized heli. Also consider we may have stuff like a CNC machine, expensive measuring tools, and engineering experience. And we were not afraid to mod the aircraft and/or engine.

I only ask because I have this engine (as you might have guessed) and I am considering getting a heli if the price is right. And being able to do this "conversion" could save me lots of cash. But it may be more expensive to do then just buying an engine.

Here is the engine

http://www.traxxas.com/products/nitr...x_trx15pro.htm
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