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I've got the M-17b on order to play around with, make it actually do something....thinking powering a small N-scale portable layout as well as its own CDI unit which should be <20 watts total...wondering if anyone else has dabbled with them. They seem to run reasonably well from what I can find...

The smallest commercially available 4-cycle for RC aircraft use was an OS FS-20, and in current production a Saito FA-30. They're OHV and use standard glow plugs, and they're approaching the smallest limit to combustion chamber size where you can fit practically large valves and a glow plug in...

A year or two ago I bought a premachined assembly kit of one of these little gems, and it went together reasonably well. Runs nicely enough, if I put air inside it it spins right up! But it ain't running right. I had ideations of running it off an aquarium pump so I could have it loping over at...

Real life got in the way and made me put my plans to get into this hobby on the back burner. But that's all sorted and I'm ready to get in. My first step is gonna be fairly simple: Buy a pre-machined PMR 3BIM, spend another 10 on an aquarium bubbler pump to power it, get some odds 'n ends 'n...

Little background: I quite literally grew up with a wrench in my hand. Been working on engines my whole life, and I've always had a massive interest in tinkering with things in general. My interest in such things has led me to the myriad of Youtube videos showing these miniature marvels...