Too bad there is no airplane version. It is not even advertised in the motor section of the website. The clutch thing looks kind of useful, maybe on a glider? Well a car anyway. Some reports of the friction material being too soft. Two years ago I was buying all kinds of motors in the mail, but now our dollar takes the fun out of it. They are all based on the US dollar. Our money has not really changed from the Chinese or Euro money but we have still got a 35% price hike because of the US middle man/base. Hobbypartz had a free shipping thing for the holiday today, that is why I looked here, Last time it was free shipping in the US, and Canada was $10. Not bad. Got a bunch of stuff. Now there is no stock at all in the airplane engines? Are electrics all that is left?