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Some years ago I actually changed from 1/4" ID hoses (1/8" ID fittings)
to 3/8"ID (1/4" ID fittings) on the tank to pump lines.
Had a disappointing test flight yesterday. Removed the fuel flow
sensor. Replaced it with clear line.
That vertical clear line started getting air (vapor?) in it, even after
reducing power and pointing nose downwards.
Something else is going on here I haven't nailed down. Will put back
the fuel tank vent and try again.
Finn
Bulent Aliev wrote:
Re: [FlyRotary] Re: Bubbles in fuel line from pump - new valve
Finn, I think you
should have minimum 1/4” ID fuel lines all around. No exceptions for
fittings etc. I have people buying a 3 GPM pump to pre-lube their big
diesels. They install 1/2” ID hoses all over, but feed the oil to the
engine through a 1/8” ID hole. Then call to complain that the pump does
not perform as advertised.
Buly
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