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HomeAircraftHelicopterBeginners Corner › Change your fuel lines
10-21-2009 12:18 AM  8 years agoPost 1
garaptor

rrApprentice

Atlanta,Ga,usa

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Bought a used Evo 50 and after getting it all together and test flight, engine is skipping like heck. Eventually found a tiny split in the fuel line where the previous owner had put a zip tie on the tank outlet line. Today my Raptor quits twice on the flight line. Finally did some overdue maintenence and found the tank line all corroded and flaking. Pressure line pretty well burned.Heads up to folks like me that hate to do maintenence.

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10-21-2009 12:45 AM  8 years agoPost 2
Brokenwing II

rrVeteran

Watertown, NY

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I bought my Raptor 50 off a friend awhile ago and last year I flew around 2 gallons of fuel through it and at the end of the year I changed the fuel lines. As I was doing the clunk line it fell apart. Matter of fact all the line were very very brittle. That was an engine failure waiting to happen. Now every 6 months or so.

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10-21-2009 02:22 AM  8 years agoPost 3
Heli0228

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Ripplemead, Va

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clunk line
If you do not like to do maintenance on your heli and want the clunk line to last as long as possible use the "Hayes" clunk line. I use the Hayes brand and I change my clunk one time a year, when I take off the old line it looks in perfect shape, but it gets changed needed or not.

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10-21-2009 08:20 AM  8 years agoPost 4
Aaron29

rrProfessor

USA

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I tried the black hayes and it actually died the fuel that was in the tank in the time it took to fly.

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10-21-2009 09:02 AM  8 years agoPost 5
itsjojo

rrKey Veteran

North East Pennnsylvania

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I have heard that the fuel turns dark on the first few flights then gets better but still good words on this clunk line.

JoJo
Foreseeing My Flybarless Future!

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10-22-2009 02:39 AM  8 years agoPost 6
Heli0228

rrApprentice

Ripplemead, Va

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Hayes line
Yes the first time you use the hayes line it WILL turn the fuel dark almost black, but the engine will run fine. After the second tank then the fuel looks fine and all will be good. Also when you install the Hayes line cut it about 2mm short becaue it will swell and rub the tank so it needs to be shortened at the install, that way when inverted the clunk can fall where needed and fuel can be sent to the engine. DO NOT worry about the dark fuel it will pass.

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10-23-2009 02:29 PM  8 years agoPost 7
chopper_crazy

rrElite Veteran

Delphos, Ohio

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I always use Hayes clunk line and it has worked great for me. After each case of fuel (4 gallons) I change out all fuel line. Good routine maintenance is key to success.

It's a complex, costly, glow powered anti-gravity machine!

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10-27-2009 10:22 PM  8 years agoPost 8
RAK402

rrElite Veteran

Alhambra, CA

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It is a good idea to change the fuel lines at least once per year.

Also to fill the tank after the last flight to purge the caustic exhaust fumes (which attack the clunk lines).

Draining the fuel back into your fuel can will not hurt the fuel (regardless of what the fuel manufacturers tell you).

Team KBDD/Compass Team Manger/Experience RC/Team JR Americas/WR Field Rep

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