Gallery, Projects and General > Project Logs

The Return of No. 83, a Hot Air Engine

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vtsteam:
After a half hour of searching I couldn't find the original lap I'd made to build this engine. So on to making one.

First I found an old 3/8" bolt. Cut the head off, and screwed it into a chunk of aluminum scrap.

 

vtsteam:
Then I turned it around in the chuck, and turned the end to 2 thou under the piston diameter, and reduced the inner end.

 

vtsteam:
Checked fit in cylinder for binding.

 

vtsteam:
Then slit it with a hacksaw in the vise.

 

vtsteam:
Then drilled through the base of the slot.

 

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