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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Fuel tubing and inverted flight
05-24-2007 02:45 PM  13 years ago
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szangvil

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Haifa, Israel

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Fuel tubing and inverted flight
I have a few questions:

1) What material is the fuel tubing made of and what temperatures can it tolerate? Can standard polyurethane hold up? How hot does it get around an OS .37 where the fuel line runs? What is the ID and OD of a standard tube?

2) How is fuel reaching the engine in inverted flight? What is a header and a float tank? What is a clunk?

Thanks!
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05-24-2007 03:19 PM  13 years ago
BarracudaHockey

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Jacksonville FL

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Your clunk keeps the fuel line submerged, its a metal fuel pickup. A header tank is a bubble trap incase your main tank clunk comes out of the fuel momentarily during voilent manuvers. The bubble gets stuck in the header tank and the header tank clunk is always immersed in fuel unless you keep flying after the main tank is dry.

Use silicon fuel lines for the fuel and muffler pressure lines and use the same thing or Hayes neoprene line in the tanks for the clunk lines.
Andy
AMA 77227
http://www.jaxrc.com
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05-24-2007 03:26 PM  13 years ago
Pepe Toño

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Mexico, DF - MEXICO

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and change the line maybe one time per year.

Neoprene fuel line, Clunk line?
Un saludo desde Mexico
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05-24-2007 03:43 PM  13 years ago
BarracudaHockey

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Jacksonville FL

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The Hayes stuff yes. Cut about 2mm of standard fuel line and slide it over the connection, its a fairly bulletproof setup, change the clunk line every 3 or 4 months.

Andy
AMA 77227
http://www.jaxrc.com
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05-24-2007 04:05 PM  13 years ago
cupra

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leicester uk

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The Hayes stuff yes. Cut about 2mm of standard fuel line and slide it over the connection, its a fairly bulletproof setup, change the clunk line every 3 or 4 months.
is this if you are useing the haynes i have ordered this in from the states as the normal tube i get about a month out of but i fly a lot i want to use the Haynes so it fit and forget with a check now and then how often do you expect i will have to change it do you have to fit the extra bit of pipe because it slips of or is it no worse then any thing else for coming off ?
thanks
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05-24-2007 06:57 PM  13 years ago
schoenju

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Springfield, oregon USA

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What?Justin Schoenberg
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05-24-2007 09:03 PM  13 years ago
Yug

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UK. Herts

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Hayes expands in length by 10% when wet.
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05-25-2007 06:36 AM  13 years ago
szangvil

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Haifa, Israel

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When I route my fuel tubing, is it allowed to touch the exhust or the engine?
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05-25-2007 12:19 PM  13 years ago
CXD

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Norway

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I don`t think that the fuel lines should touch the exhaust! i think they would melt. but the engine? it depends on where it touches. but imo it shouldn't touch anything.Dumb Thumbing doesn't apply to pinchers!
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05-25-2007 03:07 PM  13 years ago
Yug

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UK. Herts

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It won't melt, otherwise the hose on the muffler pressure tap would have problems
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05-25-2007 04:39 PM  13 years ago
CXD

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Norway

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oh f**k I forgot that
so its okay for it to touch the muffler?
Dumb Thumbing doesn't apply to pinchers!
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