jbhart(at)onlyinternet.ne
Guest
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 Posted: Tue Sep 16, 2008 8:10 am Post subject: fuel line |
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From: "pj.ladd" <pj.ladd(at)btinternet.com>
Date: Tue, 16 Sep 2008 15:17:15 +0100
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I am fascinated by all the discussion about fitting an extra fuel pump.
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Has anyone actually checked to see what percentage of fuel pumps have
failed. It seems to me, ignorant as I am, that all the complications of
setting up a back up pump merely increase the risk of something going
wrong.
What about doubling up on the control cables? If they part you really do
have trouble. Whatever happened to simple, slow, cheap flying..
Pat,
I believe it has to do with "comfort level". If you have the same two of
anything, the cost and weight and the chance of a failure for that item
doubles. I have two retired Air Force brother-in-laws, who believe it is
dangerous to fly with anything less than four engines and a redundancy of at
least two on every other support system.
As far as the fuel pump is concerned, I test it on each take off. If the
engine will not come up to max rpm, I will change it out. I use clear line
from the pump to the carburetor, so I can see that the carburetor float bowl
is completely primed by the fuel bulb pump. I remove the float bowl
periodically to check for debris and water. So far, I have never found any.
Once a year I remove the tank and remove debris from the bottom. I may
find a dime's volume of water in the tank. I purge my four 2.5 gallon fuel
transport and oil mixing tanks twice a year. This has been a simple, light
weight, and reliable fuel system for the FireFly. I do not consider it to
be substandard.
If I could figure out how to select the correct pitch wood propeller on the
first pick, I would be flying with a wood propeller.
Jack B. Hart FF004
Winchester, IN
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