correct about the c clamps but hard lines it takes too much to smash them down to where they dont leak .
Re: fuel lines
correct about the c clamps but hard lines it takes too much to smash them down to where they dont leak .
chuck
kitfox IV 1050
912ul warpdrive
flying B , yelm, wa
Re: fuel lines
Do you Plan to install a sump? A good location is the low point below the header outlet.
Tom Jones
Classic 4 builder
Re: fuel lines
"Do you Plan to install a sump?"
What would a sump do for you below the header tank?
I think without a fuel pump of some kind there would not be enough head pressure to run the header tank dry, but a sump is usually associated with keeping sloshing fuel from unporting the the fuel pickup tube, yes?
Roger
Re: fuel lines
I tend to view a sump as a place where water and debris gather and can be drained away, in my case the header tank itself. The fuel pump on the Rotax can definitely run the header tank dry. Perhaps he is referring to a gascolator?
Last edited by Dorsal; 03-01-2012 at 12:21 PM.
Dorsal ~~^~~
Series 7 - Tri-Gear
912 ULS Warp Drive
Re: fuel lines
A sump to drain any water or crap. Roger, do you not sump your tanks?
Tom Jones
Classic 4 builder
Re: fuel lines
I guess I always relied on a combination of gassolator and lots of disposable fuel filters. Even still, my finger strainer got totally plugged in my model 2, with a total stoppage of fuel from one wing tank (I guess that's why Kitfox gave us two !!!)
Isn't a gasolator at the low point of the fuel system a sump in a way?
I do remember to always drain mine, in fact my model 2 had two of them, one on the firewall but also one behind the seat, and I always drained first, fly second
Roger
Re: fuel lines
I have fuel shut off valves, but keep them with my tool kit.
Lowell
Re: fuel lines
I want to thank everyone for the thoughts, opinions, and shared experience. Here is where I think things are coming out:
1. Wing Tanks to Header Tank: Flexible line
2. Header Tank to Electric Pump: Rigid Aluminum line
3. Fuel Pump to Main Shutoff valve: Rigid Aluminum line.
4. Main Shutoff valve to firewall: Rigid Aluminum line
4. Firewall forward: Flexible line ( Rubber with steel braid or Bing)
These seem to be a good mixture of the thoughts everyone has expressed so far. Reactions?
Last edited by mclayton; 03-06-2012 at 09:13 AM.
Re: fuel lines
OOPs!
Forgot to mention that I will be installing a gascolator, forward of the firewall, at the lowest point of the fuel line, when the aircraft is parked on the ground, or in level flight.
BTW, the Bing fuel line is rated to 50psig, -65F to 220F, with an 8000 lb tensile strength. This is comparable to other flexible fuel lines. Maximum pressure in my system will be on the order of 2-3 psig, so there is plenty of margin
Last edited by mclayton; 03-06-2012 at 09:15 AM.
Re: fuel lines
What did you decide to do about shut off from wing tanks?Originally Posted by mclayton
Be sure to route fuel line below electrical line and connections.
Dwight B. Van Zanen
Maple Valley, WA and
West Columbia, SC
PP/ASEL/IA
Avid Mk 4 Aerobat
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