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Did you make one of these at school or as an apprentice?

TE Haynes Hot Air Engine

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Manofkent02/11/2014 08:01:01
141 forum posts
29 photos

I was told recently that engineering apprentices at a local college make stationary steam engines as their project. Part of the judgement of the quality of workmanship is to run the engine on the lowest possible compressed air pressure. The better the build the better it runs.

Neil Wyatt02/11/2014 12:51:45
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19032 forum posts
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80 articles

The better the build the better it runs.

I'm not entirely convinced of that the engine with least friction engine probably runs smoothest at low air pressure, which may mean some pretty sloppy fits.

The real test is which one runs at lowest pressure under load.

Neil

Avon02/11/2014 22:12:36
71 forum posts
26 photos

Just thought, but perhaps it's the fastest machine for a given pressure. In truth I think there will be a range of 'best' builds since we're looking for the most efficient and that could vary for a range of pressures and loads. Would be an interesting experiment.!

Ian S C03/11/2014 10:24:00
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7468 forum posts
230 photos

An even better test than a steam engine is the hot air engine, see how slow that will run, then see how fast on the minimum of heat/smallest burner. A steam engine with a good size flywheel will run slow.

Ian S C

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