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HomeAircraftHelicopterBeginners Corner › Header tank problem ?
05-08-2005 05:16 PM  13 years agoPost 1
Renaissanceflye

rrNovice

Homestead, FL

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First off let me thank everyone on this forum as it has helped me many times. I have just started doing figure eights (kinda of), but have been having lots of fun. Went out today to fly and my header tank ran out of fuel with almost 1/4 of tank left in the main tank. Luckily I was only about 2 foot off of the deck. I was thinking there might be a leak in the tubing between the main and header tank. This has never happened in the past. Anyone have an idea where I should begin looking. Flying a Raptor 30 V2 with a TT 39 engine.

Thanks Steve

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05-08-2005 05:23 PM  13 years agoPost 2
cwright

rrKey Veteran

Blossvale New York

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You could have a leak in the line like you said. Or another psoobility is that the clunk line come off in the main tank. When in doubt replace all the fuel lines. Chuck

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05-08-2005 06:00 PM  13 years agoPost 3
Leif

rrElite Veteran

USA

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If you're sucking air into the header tank when the main tank still has fuel, then either:

A. You have a leak in the fuel system.
or
B. Your main tank clunk somehow coming out of the fuel.

Typically, a leak would be in the main tank clunk line. However, this can also occur if you have a leaky line from the main tank to the header, or if you have a split in your header tank.

The second possibility is only likely if you've been doing aerobatics or if your clunk like is too long or too stiff.

Leif

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05-08-2005 06:15 PM  13 years agoPost 4
Renaissanceflye

rrNovice

Homestead, FL

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Will change out all tubing and the clunk lines in the fuel tank. I will post my results later. Thanks for your replys.

Steve

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05-08-2005 06:49 PM  13 years agoPost 5
Ringding

rrApprentice

Austria

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My metal end of the clunk line came off recently (line was brittle) which had very much the same effect. Plus, there was a lot of engine stuttering when inverted.

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05-09-2005 01:21 AM  13 years agoPost 6
BC Don

rrElite Veteran

Calgary, AB Canada

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I stated to see some air in my header tank. Also saw some fuel on it. Seeing as I crashed, I ditched the tank, fuel tubing whole setup. I'll go with a "UniFlow" and header tank setup when I assemble the next one.

Got Money? Send it to me, I'm a Heli Addict.

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05-09-2005 11:57 PM  13 years agoPost 7
Renaissanceflye

rrNovice

Homestead, FL

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Clunk tubing in main tank was shot. The clunk line was off when I took it apart. Just got back from the LHS and bought new hayes black tube for the clunk lines and new silicone for the rest. Thanks for all the help.

Steve

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