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I posted up the plans for this engine quite a while ago, with the promise that chips would begin flying in September. Well, they did. Things have been moving kind of fast and I can only work on the parts two nights a week for about 2 hours each night. So far, its all starting to somehow come...

Hi all, I am starting to progress along on my 2 cylinder engine build. I have a question regarding the camshaft though. I plan on making it out of either O1 or A2 tool steel. I was wondering how important it is to harden the metal on this scale. It seems to me that tool steel is already quite...

I had been working on these plans on and off for quite a long time, and now that I will have access to a very well equipped shop in the near future, I actually want to build it. I have read through many a threads here on the website and then realized I had a lot of problems with my design...

Hello all, Found this forum about a week ago. I am currently a Mechanical Engineer in training and am very interested in engine design. About a year ago, the idea of a miniature engine fascinated me so much I decided to take a whack at designing one myself. At the time I was learning some 2D...