Nice lil video of someone building a working V12.
http://www.wimp.com/tiniestengine/
That is so cool. A thing of beauty and craftsmanship.
Steven
Awesome pinewood derby car engine! 
Wikkit pissah cool…
Once upon a time, I had an issue of RCM Magazine(radio control modellor) that had a guy building a scale Curtis-Wright biplane, with a scale V12…that was functional. The article said Champion heard about it, and made the spark plugs for the engine. I’ll have to dig around and see if I can find that again!
Diesel? I saw no ignition system. Very cool and ECI-like. I don’t read the language but think it said something like 1220 hours labor?
This sort of stuff always puts me in mind of this top fuel one I happened across a number of years ago: http://www.weberprecision.com/
And a search turns up this: http://www.conleyprecision.com Only $6000 for the non-supercharged version, a couple grand more for that. 
But, it is a real, serious engine. 5.5 HP at 9500 RPM, LOL. By serious I mean the fact that it can and is meant to turn that kind of RPM - amazing.
The Stinger 609 runs like a Chevy. If you’re going to make a video of your $6000 mini engine, I’d figure you’d make one where it doesn’t stall 3 or 4 times.
Here we go! Not the RCM article, but the same guy/plane:
http://www.craftsmanshipmuseum.com/Ingersol.htm
Impressive, to say the least!
I wonder what it’d be like to be well off enough to look at a toy such as this and say “hell, why not?” Something tells me I will never have to worry about such things.
I’ll bet you’d be the only one on your block with one. And I suppose there’s people that look at our cars and think, “I wouldn’t what it would be like to be well enough off to spend that kind of money fixing an old car.”
LOL, I was thinking along the lines of, “My Cougar is the equivalent of your bass-boat, Mr. Fisherman”…
The motor in the first post is running on compress air. It’s the same method used for small steam engine for display, Less mess.
There was an article many years ago about a fellow who was doing the same thing. He would make any motor, Chevy or Ford, what ever, and with your choice of single or double carb. All these motors have glow plugs for spark plugs and the carbs are all the same that you would see for RC stuff.
The motor in the article was about 6 inches square in size and with about 9000 or so RPM. The motor would put out about 1.5 hp. He put the engine in a RC 4x4 and would chase his dog around the back yard. That magazine disappeared but remembered it well. I wanted to do the same, since more background at the time was a machinist. He was selling them for around $2000 at that time and it has to be close to 20 years ago.
Watching him turn the crankshaft and spec everything with an old school mic and caliper was pure automotive porn. Were I to attempt that, I’d get to the last journal on the damn thing and screw it up.
How about a Miniature Sleeve-Valve Engine?
http://www.agelessengines.com/sleeve.htm
Wow…talented craftsmen, on all accounts. Watched the 9 cylinder radial video on Ageless’ homepage…fired it up, sounds incredibly lifelike. Impressive work!
I say this to myself almost daily, as I imagine what I’ll be spending now that in addition to my very nice shape Cougar I’ve added a really ragged rusty and hacked up '79 Bronco into the mix. Couldn’t be more excited about it, but I ask myself how I’m gonna afford it, daily. I even thought about quitting smoking yesterday, for financial reasons. That’s a lot of parts money in those cigarettes!
That’s as good a reason as any, but certainly not the best reason to quit. I gave it up 25 years ago. 