Michael Mantion November 28, 2011 09:28 AM Neat. But is it an engine if it runs on compressed air? I guess so if you consider the compressed air energy. Still it would be really cool if he could make it an internal combustion engine of some kind. Dheeraj Tummala November 28, 2011 01:40 PM @ Michael MantionCompressed air engine would be the only efficient type of engine at that small of a scale. the imperfections in designing millimeter scaled parts would not be able to withstand a true ICE. Real engines are made so precise, that none of the cylinders have any sort of gaps and whatnot, but when a piston is 11.3 mm diameter, the margin of error in them being perfect grows exponentially. 999 HOT November 28, 2011 03:15 PM If you like this, you\'ll love the Model Engineer Exhibition at Sandown Park, Esher, Surrey, from 9th to 11th December 2011:http://www.modelengineershow.co.uk/ Ryan Gribble November 28, 2011 04:38 PM This thing is amazing. I want one. Forward Thinker November 28, 2011 06:57 PM True mechanical art Nantha November 28, 2011 09:20 PM Tooling work so fine it is almost like a watchmaker\'s. And he designed the whole thing as well. Painstaking work that needs to be appreciated. End result, a fine work of art.I don\'t see why he should stop there. It is possible, once Mr. Patelo has rested and been further motivated by public (us) applause, he could set about doing the impossible, making it a true ICE (maybe compression ignition, first). Lubrication with solids coatings, cooling with air (mechanical fan), etc. To acheive machining tolerances, much polishing & watchmaker technology.In time to come (when everyone has gone electric) these could be auctioned off for huge sums. Mr. Patelo, thanks for inspiring us..Yes, another fine work of engineering art, by Gizmag. Gregg Eshelman November 29, 2011 02:09 AM With the timing gears all the same, it\'s set up like a two stroke. It has to be like that to run on air, otherwise it wouldn\'t run due to having to try to compress air in the cylinders on what would be the compression stroke in a 4-stroke ICE.Also notice the complete lack of bearings anywhere but at the ends of the crank and camshafts. That wouldn\'t withstand running on fuel.It\'s a very nice air motor, but not an engine. Jetwax November 29, 2011 05:39 AM Here\'s a link to a pretty small V12 ICE used in model aeroplanes, it\'s a German site . . .http://www.artus-motor.com/The air-cooled version has a total 87cc capacitySounds great d;-) A'Tuin November 29, 2011 07:56 AM The problems of clearances and bearings in miniature engines were overcome by manufacturers of engines for model aircraft decades ago. I owned a tiny free-flight aircraft with a 0.5cc motor in 1960. That is half of the individual cylinder displacement of this V12.The main problem with making a V12 I.C.E. engine of this size would be cooling. Air would not be effective enough as heat would build up between the cylinders, and in the main part of the block, where the air could not get to. This would limit the engine to running for only very brief periods.Could an engine of this size be built with the jacketing needed to allow effective liquid cooling? I believe it could, but it would be well beyond my capabilities. :-) Philip Gunn November 29, 2011 08:12 AM he must have good eyesight ?