Worlds tiniest V12

[TMKIWI]

 OPERATIONAL V-12 DIESEL ENGINE THAT FITS IN THE PALM OF YOUR HAND. 
   
      This is not CNC technology; this guy made everything at home on his lathe and drill press.  Took 1220 hours (a year and a half?) to make the 261 pieces.  Note the end-loaded crankshaft into the block (like an Offy), 12 individual cylinder heads,  TINY  rods and pistons, dual "underhead" cams with pushrods to  rockers in the heads.  And, he did break-in runs using an  electric drill driving the crankshaft! 
   
      Even if you're not an engineer,  you'll appreciate this!     

http://www.wimp.com/tiniestengine/

[cnrcpla]

Wow  That must have taken a LOT of patience

[SachsGS]

Incredible!I wonder how the injection pump works?

I sometimes wonder if these old world craftsmanship skills are being lost in this new age.

[citabjockey]

The test run at the end, was it really running? Only mechanical clatter, no exhaust? Whatever, that thing is completely amazing even if it never gets a drop of fuel in its entire lifetime. I wonder if the guy is a jeweler as a night job?

[factoryX]

looks like its running on compressed air. Still very cool.

[xandyx]

ir runs as a rc engine, no spark but high compressed nitro rc gas.

that sir is a genious building something that small and so perfect.

[citabjockey]

ir runs as a rc engine, no spark but high compressed nitro rc gas.

http://www.gizmag.com/spanish-engineer-crafts-the-worlds-smallest-v-12-engine/20636/

Looks like compressed air gets the nod. No oil bath, no piston rings, yada yada. Fuel and combustion would not be a good idea.

that sir is a genious building something that small and so perfect.

+1 there!