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<< Lancair Builders' Mail List >>
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I placed my pumps in the stub wings and, during flight, I
cannot hear the pitch change as the pumps run dry -- maybe someone with
pumps under the seat and ANR headsets can hear them run dry.
Scott Krueger
N92EX
Scott:
Try Thomas Products-
http://www.thomasprod.com/flow.htm
They have flow switches that open/close when fluid is flowing. I am
installing these as a complicated alternative to the 2 sight tubes.
I initially got the 1900 switch, 0.1 GPM flow swithc point, 1/4 NPT, SPDT,
in brass (aluminum is available for "large" orders). However, it was
quite heavy (1.8 lbs ? for 2), so I ordered the model: 2100 in ploysulfone
(much lighter) with the adapters for NPT. I understand the polysulfone is
fuel proof and think it will work fine, although I know aluminum/brass is
preferable.
I also have an auto. fuel transfer using the Skysport sender and 2 relays,
which has been fantastic over 120 hours (drawings should be on the LML in
the near future). I plan on having 2 additional red indicator lights wired
to the flow switches, which would come on when the pumps are running but no
fuel is flowing. Clark Baker
250JF
195tt
LML website: http://www.olsusa.com/Users/Mkaye/maillist.html
Builders' Bookstore: http://www.buildersbooks.com/lancair
Please send your photos and drawings to marvkaye@olsusa.com.
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