Author Topic: Another breath engine (Huff and Puff)  (Read 700 times)

Offline b.lindsey

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Re: Another breath engine (Huff and Puff)
« Reply #15 on: April 20, 2019, 01:53:27 PM »
Moving right along Roger. The conrod looks great but really small as Roger said. I love it!!

Bill

Offline Roger B

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Re: Another breath engine (Huff and Puff)
« Reply #16 on: April 21, 2019, 12:45:44 PM »
Thank you Bill, I think you mean Per  :)

The piston was finished to size, but what is a snug fit? It's different for a fuel injection component or a breath engine. After I had turned the cylinder cover I tried to quantify this. Dry the piston fell straight through and with the cover in place it fell in a few seconds.


With a drop of light oil the piston just sat there with or without the cover  ::) Obviously what the comments about lubrication being a problem meant  :thinking:

I then started on the flywheel and excentric. I have decided I will try and cut the recesses in the flywheel with a 4mm end mill on the RT rather than attempting to make a small trepanning tool. The next steps for the excentric are also on the mill so time to change modes again.
Best regards

Roger