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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Header Tank? What is it for? how do you hook it up ?
09-04-2006 03:38 PM  14 years ago
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KB5YXU

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Wetumpka Al. usa

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Header Tank? What is it for? how do you hook it up ?
Hello I have a venture 30. I was told it was a good idea to put a header tank on it. Why? and how to I run the fuel lines ?

Thanks Roger.
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09-04-2006 04:09 PM  14 years ago
ringram2077

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Birmingham, AL

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A header tank is not a must but they are commonly used. Adds some degree of reliability in supplying a constant supply of fuel when the heli is flipping all around the sky. The outlet of the main tank goes into the inlet (upper nipple) of the header tank. The outlet of the header tank which has the clunk connected goes to the needle valve inlet on the engine.
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09-04-2006 04:19 PM  14 years ago
Gyronut

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Martinsville In.

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Also gives you a couple extra oz's of juice and serves most importantly as a bubble trap.Rick
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09-05-2006 10:30 PM  14 years ago
icepirate

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Fayetteville Arkansas USA

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it keeps a constand "bubble free" supply of fuel to the engine. As your main tank is being thrashed around, bubbles will build and may cause small, but troublesome interuptions in fuel flow due to not being full. A header tank is always full while there is still fuel in the main tank. And yes, it does give you a couple minutes of extra flight time. If you get one, make sure you mount it to where the send line (the one from the header to the carb) is a little above the carb. This will help feed the engine a little better. It is a must for doing 3D, but bubbles can form in your main tank from just doing circuts or hard corrections from hovering, so I really recommend it as a little added insurance. They are really not that expensive.

Hope this helps!

Rick
Good things come to those who wait, and PRACTICE!
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09-05-2006 10:45 PM  14 years ago
ringram2077

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Birmingham, AL

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A header tank is always full while there is still fuel in the main tank
This is generally true but not always true. If you get an interruption on the flow from the main tank from say a clunk line that is too stiff, the fuel will be pulled from the header tank until the main tank begins to supply fuel again. However the header tank will not refill itself and will remain at the lower level. I had that happen the other day. I usually don't watch the header tank level if I see fuel in the main tank but this day I did. Had to change the main clunk line to something more flexible.
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09-05-2006 10:48 PM  14 years ago
gkoutsis

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Athens Greece

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However the header tank will not refill itself and will remain at the lower level. I
Thats not true. Normally the pressure from the muffler to the main tank, should keep the header tank always full.
George
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09-06-2006 12:19 AM  14 years ago
icepirate

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Fayetteville Arkansas USA

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Actually, ringram2077 is right. I should have said "A header tank is always full as long as there is unrestricted fuel flow from the main tank". If a line is restricted, header tank or none, your going to have problems. A header is there to give you unrestriced and constant flow to the carb. If there are restrictions in the main tank, then the header isn't going to get the proper fuel flow. Forgive me if I am wrong, but the muffler provides preasure to the main tank only.

Rick
Good things come to those who wait, and PRACTICE!
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09-06-2006 12:28 AM  14 years ago
BJames111

rrElite Veteran

San Diego, California

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well, I had in my last heli a really stiff clunk line, and when hovering inverted (learning) the header tank would empty. The header would NOT refill when I righted the heli.
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09-06-2006 12:49 AM  14 years ago
dkshema

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Cedar Rapids, IA

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If the fuel level in your header should fall below full, there is no way that it will "refill"during flight, muffler pressure or not. Fuel will only go into the header at the rate it's being consumed.

Dave
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09-15-2006 06:21 PM  14 years ago
KB5YXU

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Wetumpka Al. usa

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Thanks all
Thanks every one. I have my heli up and hovering

Roger
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