Hi Day Brown, hope you are having a nice day
Tuesday, 2 September 1997 00:12:08, Day Brown wrote to Alec Cameron
Subject: Heat Engine Electric
 AC>> I have never worked with these [air] engines but I once
 AC>> understood steam engine cycles and practical working examples.
 DB> Thanx for the tips on low pressure steam Alec. But whether
 DB> steam or air, we still got the problem of making a piston with a
 DB> big enough cross section to do anything useful... Spoze you could
 DB> do a leather diaphram a foot across to get the big area you'd need?
 DB> At 15 PSI, that's 1500 lb or so on maybe a short two inch stroke,
 DB> 250 ft/lb per stroke. howze leather react to steam? * OFFLINE 1.58
 DB> * ENDTIME: when computers finally get us completely organized.
LOYS I seem to remember seeing a piston of similar dimentions when I was at
trade school. Well, two actually, one was from a water pumping station and
the other was from a marine engine. Apparently the marine engines all had
individually cylinder blocks so if (as in the example at trade school) they
crack a ring and score the bore badly they can be replaced virtually in situ.
 -=> Yours sincerely, Jock Rogan <=-
      Fido       : 3:800/409.4
      InterNet   :jock@tne.net.au
.!. I Have To Stop Now, My Fingers Are Getting Hoarse!
--- Terminate 5.00/Pro 
---------------