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HomeAircraftHelicopterMain Discussion › Header tank installation
03-29-2005 12:29 AM  13 years agoPost 1
Lockheed

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Qc, Canada

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I am installing a header tank on my heli .32 size. At what height in relation to the carburator should my fuel tube coming from that tank be?
Same level, lower higher???

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03-29-2005 12:36 AM  13 years agoPost 2
Leif

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USA

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It doesn't matter?

You've opened a can of worms with this question.. and several heated discussions have already ensued about the merits of the various header tank locations.

In reality, (my opinion) the header tank is just a bubble trap. It does provide some regulation of hydraulic backpressure, but only by adding a fixed volume of liquid between the pressurized air in your tank and your carb.

Unless you're a hovering-only pilot, the relationship between the header tank and carb will be changed drastically in flight anyway.

Leif

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03-29-2005 12:48 AM  13 years agoPost 3
Ted Toth

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Myrtle Beach S.C.

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Most say if you can put the output in line with the carb

.

You don't stop laughing because you grow old, you grow old because you stopped laughing.

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03-29-2005 01:28 AM  13 years agoPost 4
Lockheed

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Qc, Canada

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Sorry for the can of worm...Didn't have this problem before flying my logo 10.
I can do some 3 D ,so I am just trying to get the perfect set-up, and at the carburator height seems to make sense , I just needed some positive feed back.

Thanks

Mike

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03-29-2005 02:03 AM  13 years agoPost 5
Lock-Tite

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Quebec, Canada

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I dont think it realy matters that much, mine is higher, works fine till the last drop.

Frank
Dont forget to bring a clean pair of shorts when flying 3D ;)

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03-29-2005 02:05 AM  13 years agoPost 6
rcnuts

rrVeteran

Millersville, Penna

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I believe Ted has the right idea. I try to keep the feed line nipple at the same level with the intake nipple on the carb.
Harris,

Hooligan, at large

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03-29-2005 02:33 AM  13 years agoPost 7
Lockheed

rrApprentice

Qc, Canada

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Thanks to all of you
Yeap, and for a friendly intro I have read better! (can of worm??? I thought there was no stupid question...)
Could brief many many flyers on an electric set-up, so just trying to put my fuel bird into the air, tomorrow.
Anyway I already did my installation and guess what... just like yours level with the carb!
So will give an update later.

And Leif for your info there is no hydraulic pressure here, we are talking about pneumatic pressure to the header...

Thanks for the positive info

Mike

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03-29-2005 03:30 AM  13 years agoPost 8
Lockheed

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Qc, Canada

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Sorry but you are almost right,
With a hydraulic pressure system, a compressor pushes the media, usually hydraulic fluid (like in the flight control of an airliner) in complete isolation . I mean the quantity of fluid never change in the system. Here with our fuel tank, and pressure being provided by the muffler, the media (fuel of course) is changing in quantity and the burned fuel is replaced by air pressure. So It is a pneumatic system, because as the fuel is burned the system will eventually quit working...

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03-29-2005 03:48 AM  13 years agoPost 9
3d type

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Bridgeport,CT USA

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this works for me, i've never has a problem, from full to empty no leaning out problems.

how'd the ground come up like that ?

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03-29-2005 03:52 AM  13 years agoPost 10
Lockheed

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Qc, Canada

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Nice, first time I see this, usually one of the outflow is plugged

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03-29-2005 04:31 AM  13 years agoPost 11
3d type

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Bridgeport,CT USA

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it is pluged , i use it to hold my fill line. you have to drill that nipple open to be able to use it for something. so i leave it shut and keep my fill line on there, makes things a little easier. i do that to all my helis, works good.

how'd the ground come up like that ?

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