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josok-e(at)ukolo.fi
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 Posted: Tue Mar 06, 2007 11:47 am Post subject: test for debris |
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Somebody i told i was going to run the pumps while carrying the plane on a
trailer to get possible debris out of the tank wanted to hear the results.
Who can make longer sentences  The transport was over 40 miles of icy
roads, and was moving around quite a bit. Duration about one hour. Anyhow
the result was an almost nothing. Found some aluminium dust, most likely
remains from the pipe cutter and or flange tool, a flinter of the
electrical tape i used to close off the openings of the tank before the
fittings went on, and a small part of what probably was a leave. 99.99% of
the gascolater screen was free. No tank cutting debris at all! Is that
still due, or was washing all out with soapy water that efficient?
Second answer due: There is a dry head on the pump in my installation, and
we were interested to know how much time it takes to pick up fuel, if
switching from a dry mains to reserve. I timed it to be about 2 seconds.
Can somebody survive 2 seconds of heart beats missing?
Kind regards,
Jos Okhuijsen
--
workshopcam http://www.okhuijsen.org/plane
http://www.europaowners.org/kit600
mono xs, blue stuff filled, sanded and primed, fuel system in, doors
done, windows in, filled and sanded, waiting for the painter, engine
installation, panel.
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steven.pitt2(at)ntlworld.
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| Posted: Tue Mar 06, 2007 2:44 pm Post subject: test for debris |
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Jos
Interested to read your thread on debris in the tank. I thought I had been
carefully keeping my tank sealed and even filling it , emptying it several
times and only filling through a purpose made aircraft fuel filter (which
certainly shows up water if any is present).
My aircraft engine has now run approx 17 hours and flown for about 14 hours
including the testing and stalls etc since. I have done about 30 landings
and after all that I am still changing my filters every flight and still
picking up debris (although the latest run was almost clean.
I understand from many that this is a common problem with the fuel tank and
other than frustrating and nerve wracking is all part of the early life of
the aircraft.
On changing tanks the fuel pump seems to cope immediately but I do always
make sure that the reserve filter has fuel in when I do the preflight
checks.
Regards
Steve Pitt G-SMDH
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