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  1. R

    1936 Midget engine from Popular Mechanics magazine plans

    I'll try Google books, I just found archive.org looking for a mechanical drawing book.
  2. R

    1936 Midget engine from Popular Mechanics magazine plans

    Great build from a classic magazine. I hope it's not hijacking the thread, but I recently found archive dot org, where quite a few classic magazines lost to time are scanned and published. Below is a link to whole year of 1936 popular mechanics available to read on line, download individually...
  3. R

    Poppin Stuff

    This weekend’s machine shop time was mostly an exercise in frustration. My Jet Mill motor started smoking, my two pistons went south, and my tool post fell apart. I did get my Harley motor that DeadEx crushed in shipment torn down though and my Buell Blast Piglet back on the road. For whatever...
  4. R

    Poppin Stuff

    Thanks all for the feedback. The board and its members are a fantastic source of information. In the seventies and eighties I was a mechanic and you had to be related to someone or be an apprentice to get this kind of knowledge found here. Next on to the pistons!
  5. R

    Poppin Stuff

    So I was not as happy with my fins on Sunday morning as I was on Saturday night so I got back at it and made another one. The first thing I didn’t like was the fins were a to narrow and the grooves to big. I double checked my grooving tool - a ground down parting tool and it was closer to .050...
  6. R

    Poppin Stuff

    I finally got the first chips cut on my first project in with my new to me tools. I chose as my first project the Poppin air-cooled vacuum engine by Dr. J. R. Sentf from Live Steam November 1980. The internet has hundreds of plans but I chose this for its well documented build steps and many...
  7. R

    Hello from Berkeley

    Thanks all! I will get some of that gray bar ordered up and start making chips. I got a bunch of 1" OD cold roll i scrapped learning how to thread so I am going to start practicing cutting my cylinder on that. The reason I chose Dr. Senft's Poppin was the detailed machining instructions perfect...
  8. R

    Hello from Berkeley

    Thanks for all the hellos! I should have asked this in my post, but can someone tell me where to find meehanite bars or a good alternative. It is the first ingredient in my popper build and so far I am at a loss as where to find it. Stainless steel was the recommended alternative and that is...
  9. R

    Hello from Berkeley

    Hi my name is Roger and I am from Berkeley California. I just got a Jet Bridgeport clone, an Atlas 12 inch, and a car load of tooling from my buddy that retired. I took a machining class because I wanted to make parts for my Harley rebuild and don’t like to buy stuff. While researching lathe and...
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