Newbie thinking bout building alpha engine

Discussion on Stirling or "hot air" engines (all types)
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Lugnut
Posts: 3
Joined: Wed Jul 08, 2015 5:04 pm

Newbie thinking bout building alpha engine

Post by Lugnut »

Need help in piston cylinder clearances. Brass cylinder and carbon graphite piston..hold thumb over cylinder and piston does not drop, release thumb and piston drops. Does this type of engine have air blow by piston or does it have to be air tight.
Ian S C
Posts: 2218
Joined: Thu Dec 02, 2010 5:15 am
Location: New Zealand

Re: Newbie thinking bout building alpha engine

Post by Ian S C »

lugnut, that sounds about right. The cylinder needs to be highly polished in the bore, or the piston will wear quickly.
Ian S C
Lugnut
Posts: 3
Joined: Wed Jul 08, 2015 5:04 pm

Re: Newbie thinking bout building alpha engine

Post by Lugnut »

Thanks Ian , I'm in the deep thought process or trial an error process, but will be ready to build model soon. Thanks for your input.
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