airplane engine vs. helicopter - RC Groups
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Nov 29, 2004, 11:58 PM
Registered User

airplane engine vs. helicopter

Is there any real difference between a helicopter engine and the same size motor used in a r/c airplane?
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Nov 30, 2004, 02:24 AM
Registered User
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.
Nov 30, 2004, 03:51 AM
Heli pilot
russern's Avatar
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
Nov 30, 2004, 01:36 PM
Balsa Builder
Paul Susbauer's Avatar
Most heli engines are ringed engines as well. Not many ringed plane engines left anymore.

Nov 30, 2004, 11:12 PM
Registered User
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.

Dec 02, 2008, 06:07 AM
Registered User
PLEASE I NEED TO KNOW THE variation IN THEIR COMPONENTS ie the structural difference and the
Dec 02, 2008, 06:14 AM
Registered User
pls does anyone know the difference between the engine components of airplane helicopters and automobiles?
Dec 02, 2008, 08:48 AM
Multi-Platform Pilot
barracudahockey's Avatar
The helicopter engine has a bigger heat sink, usually a carb optimized for mid range, and most importantly, a shorter crank shaft.
Dec 02, 2008, 02:19 PM
Will fly for food
And they tend to run at higher RPM. So timing is different. Heli engines run in the 17,000 RPM range.
Dec 07, 2008, 02:18 PM
Future-proof EVERYTHING
DarkHeli's Avatar
oil + its lubrication is different.
Dec 08, 2008, 05:28 AM
Will fly for food
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.
Dec 10, 2008, 07:53 AM
GunnyGlow's Avatar
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??!!
Dec 10, 2008, 01:39 PM
Will fly for food
Dec 14, 2008, 04:37 PM
Multi-Platform Pilot
barracudahockey's Avatar
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.
Feb 02, 2009, 05:06 AM
Registered User
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

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