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I have gas welded aluminum, long time ago. The secret I was taught was to use goggles with a blue lens, the blue let’s you see the puddle, and you have to work fast. I have been successful using a butane air torch on small parts with aluminum solder. Will have to try the low alloy gold...

Nice build. Mount the hall effect sensor in the mounting base I assume you will have slots cut in the main crank pully or the flywheel similar to what is used as a crank position sensor in modern engines. The other method is similar to that used in printers, an encoder disk with optical...

But the tooth profile is more closely in scale with the tooth profile of a full size blade. Pat

Nicely done Brian, the larger blade is more in line to scale with a full scale saw. As I said the teeth on the Vaughn were 2” with a double cut profile so it cut on both strokes the end of a single tooth had a W profile with both sides sharpened in between the wider W teeth was a V tooth I...

So dad’s Vaughn did use the dog clutch I think it had 4 dogs on it and I seem to remember a canvas or leather, possibly belting pad that worked like a synchronizer to bring it to speed but that was 60 years ago and I only saw it run once bucking up logs to be split. I didn’t get a chance to...

All of my .049 glow engines have hollow cranks, induction port, I know there were some that were reed valve inductions. Pat

So I did a google search for the Vaughn and a YouTube video showed up of my older brother running the saw at a show in Idaho. If you want to watch one in action.

Nice, I have a full sized Vaughn drag saw which is currently in a logging museum in Northern California. My older brother restored it 20 years ago. The bar is 2 parallel rails about 3 feet long the clamp for the blade mounts on the rails and travels about 2 1/2 feet the whole bar pivots...