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<< Lancair Builders' Mail List >>
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Question: I now have about 550hrs on N654DM, and have the original vacuum
pump on the plane which is working just fine--should I replace it now, or
keep on running with it?<<
I have designed and received a patent for a pressure regulator designed to
control the pressure differential in flight instruments that will
potentially eliminate the need altogether for an engine-driven vacuum pump.
It operates off the manifold and compressor discharge pressure of the engine
to produce a regulated vacuum under almost all engine operating conditions.
The advantage of this system is that it is lighter and more reliable than
the alternatives - reliable enough with only one moving part that there
should be no need for a vacuum back-up. And it will work well with a
pressurized cabin.
I'm looking for a "beta test site" until I get mine built. Any IV/IVP (or
turbo anything) operators out there that would like to work with me on this?
I'll supply all the hardware and you tell me how well it works.
Gary Casey
Turbo ES project
LML website: http://members.olsusa.com/mkaye/maillist.html
LML Builders' Bookstore: http://www.buildersbooks.com/lancair
Please remember that purchases from the Builders' Bookstore
assist with the management of the LML.
Please send your photos and drawings to marvkaye@olsusa.com.
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