Posted by Bob M on April 20, 2010 at 19:51:29 from (67.240.166.49):
In Reply to: More Schramm stuff posted by uglyjim on April 20, 2010 at 17:51:13:
Wardner said: (quoted from post at 22:20:40 04/20/10)
You have to wonder why compressors weren't driven off the PTO with controls running to the tractor engine. Seems like a much cheaper solution.
I wondered about that too Wardner.
I suspect however modifying an existing, high production engine so half its cylinders pumped air was cheaper than building a separate compressor and PTO drive and mounting it to a tractor.
Keep in mind also the Pneumatractor was really only a "self-propelled portable compressor". It's tractoring capabilities were modest at best, and were only a secondary consideration in its design.
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Incidentally when I was a kid back in the 1950's seemed every town highway dept around here (western NY) had at least one Schramm compressor on their equipment roster. Cool, old technology!
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