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Guys, To fill a pause between engines, I have just finished this Ellipsograph as an educational toy for my Granddaughter. It's to a Jan Ridders design and not having any thick Acrylic, it was made out of Polycarbonate. One huge lesson is that Polycarbonate does not "flame polish" like its...

I am no engineer but the various posts on Forums in this Site inspired me to tackle the "Otto" petrol engine designed by Jan Ridders. The build took nine months with a few of the parts having to be remade after silly mistakes. First, Jan Ridders is a wonderful guy giving freely of advice...

This post to thank all you guys who gave me advice in the build of this "Little York" Hit & Miss engine - especially George. I have taken the time as was suggested to keep a photographic record of the build with the addition of a video clip of the engine working at full throttle with the...

This post to thank all you guys who gave me advice in the build of this "Little York" Hit & Miss engine - especially George. I have taken the time as was suggested to keep a photographic record of the build with the addition of a video clip of the engine working at full throttle with the...