At 03:04 PM 11/24/2011, V G wrote: >On Thu, Nov 24, 2011 at 4:10 PM, William "Chops" Westfield > wrote: > > http://www.wimp.com/tiniestengine/ > >That is very beautiful. Pure art. Agreed! >Questions: > >1. In the beginning, when he was using the lathe to make the camshaft, >what metal was the camshaft made of? What metal was the cutter made >of? Most everything looked as if it were made from free-machining=20 brass. That's what the turnings coming off the lathe looked like to me. >2. What metal are the cylinders and pistons made of? I *think* brass also. >3. At the end where he was demonstrating the engine running, was it >being powered by compressed gas or internal combustion? It was being powered from compressed air. No sign of spark plugs or wires and I don't think that there was ANY=20 way that he could achieve the compression ratio required for diesel. Nor was there anything that looked like it could be used for timing=20 (either spark plugs or injectors). >4. What metal are the cylinders and pistons of car engines made of? >What is the temperature of combustion inside the cylinder? (I'm >curious if the alloy that the cylinders are made of can be >bored/lathed/machined by a hobbyist of it's simply too expensive/hard >(as in hardness of metal) to bore yourself. No real idea, but I do know that home machinists do custom=20 internal-combustion engine parts on a regular basis. I suspect there=20 is much information available online. dwayne --=20 Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .