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power piston is graphite, cylinder is aluminium air tight and low friction

Comeback after 8 years, convert some to cnc part
https://www.youtube.com/watch?v=AqoViPEj2qY

At the first engine, it is look quite heavy for a low temp engine. Is it right Ian SC?



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When burning and rotate the flywheel, i see piston move a little, i feel the hot volume is quite small. I intend to change the bigger hot cylinder, with bigger diameter about 32-35mm, of course diameter of displacer has to follow, everything not change. Is it ok?

Dear everybody, i joined this forum about 1 month,and realise it is very good and usefull for everyone who are concern on stirling engine. There is many people in here ready to share, reply and guide the other to complete their engine. But i feel it is not enough because it is passive. My idea is bu...

Something does look right. Can you show us all the parts in a single photo? This is what I got from your photos and video. 1) The transfer of the working gas seems to take place at the very bottom of the hot cylinder. 2) The crank rod of the hot piston goes in straight. 3) When you combine 1) and 2...

New brass flywheel , diameter 84mm, thick 10mm, weight 450gr, still not running

http://www.youtube.com/watch?v=KQckn1fpOAo
power stroke is 14mm, is it need to reduce power stroke?

and diameter of drilling hole from diplacer cylider to power cylinder is 5mm, i it ok?

Hi all, Today i make flywheel from acrylic 10mm thick, rods from acrylic too (just temporary to test). remove 2 Oring and use lubricant (i feel it better). After assemply, i can rotate flywheel easily , just a little friction, but it cannot rotate longer maybe not enough weight. When it is rotating,...

hello everybody, iam just a baby in stirling engine, iam building a first alpha engine but not finish - All made from aluminium and brass. - Cool cylinder diameter = 16mm, long 39mm - Power Piston has 2 rubber O ring -> i feel much friction - Hot cylinder diameter = 24mm, long 70mm (include brass pa...

Hi all, iam crazy about stirling engine, i hope i can learn more about stirling engine from this site , thanks all.