Hybrid Car – More Fun with Less Gas

What About An Air Motor For Steam? - Page 2

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Posted by Ulysses on April 5, 2009, 4:00 pm

I was thinking perhaps the vanes could be adjusted to compensate for heat

Posted by Bob F on April 6, 2009, 4:46 pm
Ulysses wrote:

I was thinking more along the line of getting soft as they get warm, with
resulting deformation and wear.

Posted by Ulysses on April 7, 2009, 4:52 pm

Well, from what I've seen they are easily replaced and many different
materials could be tried.  Perhaps stainless steel would work.

Posted by Richard W. on April 7, 2009, 7:27 pm

Vane motors have the tendency to self destruct, because of the vane being
thrown out to against the wall of the motor. They use vane pumps for
compressing air mixed with oil. This is done by injecting oil on the air
intake of the vane type compressor. Then a special filter is used to remove
the oil from the air, so that you don't have a bunch of oil running out of
your air tools. That's why plastic is often used in vane motors. I wears out
the case at a slower rate.
   There are radial air motors available, but I don't know how they would
work with steam. I have seen radial type air motors that you could slow down
so much that they barely turn over. Yet because of the multiple cylinders
have a fair amount of torque. We had one on the carriage of a big 54" swing
lathe. We used it for a rapid traverse. The carriage was so big you often
stood on it. It must have weighed over a ton.

 The benefit of steam is that after running an engine the waste steam can be
used to heat a house at low pressure. Thus giving you both heat and power,
which offsets the cost of fuel. Also the fuel could be anything from coal,
oil, fire wood, paper or straw. A lot of the old steam tractors had boilers
built for using straw for fuel. This was a popular option in grain growing
areas where trees were scarce.

  I think that a Mike Brown steam engine would be the way to go if funds
weren't an issue to you.


Richard W.

Posted by Ulysses on April 8, 2009, 5:03 pm


I have looked at those in the past.  $400 for 3 HP does seem like it would
take a long time to break even compared to using gasoline and generators.
Whenever I  think about buying solarvoltaic panels I just remind myself how
much gasoline $0,000 will buy.

I found a web site that I think was in India for a company that was
apparently selling steam engines and boilers for rural use.  The boiler
resembled two automotive type radiators forming an A-Frame.  There was
little info on the web site but it appeared that the boiler was designed to
have a wood fire built under it.  I lost the site but now I think I'll go
look for it again.

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