Align fuel line, replace?

[aww]

I'm well into my 600n build and about to install the fuel tank. In Bobs video he says to throw away the fuel line and clunk line. Are the ones supplied with the kits now better quality or should I replace them with after market ones ?
Anthony

[sbmon]

Definitely replace with better quality line. Try to get similar inner diameter sized fuel tubing. Don't throw out the smaller inner clunk line. Use the small tubing on the 450 v2 as a feathering shaft sleeve, it goes in between the dampners in the head. Use a little lube to work it in place, it will firm up the head. Another freak member Ernifritz showed me this trick and it works great.
shawn

[tmore13]

Fuel line is very cheap, I would'nt risk having a fuel problem. I opened the bag with the fuel line and in the can it went.
If you can wait I would get new fuel line and clunk line. Also you may want consider a bubbleless clunk.

[TheBum]

I used the stock line after talking to the owner of my LHS. He knows a guy who used the stock line and it lasted for 9 months. What's even more amazing is that the guy didn't even take good care of it: he left fuel in the tank after flying and never vented exhaust out of the tank. As with many other things in life, YMMV.

[LJS]

Hi AWW,

I replaced mine. In fact I replace mine every 8 gallons. I don't like having fuel problems. I also went with the OS bubbleless clunk and love it. I have no idea how it gets every last drop out of the tank, but it does.

Back to the fuel line, I wouldn't throw the fuel line away. I use it around the sharp edges of the frame so that the insulation on my servo wires isn't worn away. Simply put a slit in it lengthwise and work it onto the edges. Works great.

Keep 'em flying.:YeaBaby:
LJS

[BJH]

Hi AWW,

I replaced mine. In fact I replace mine every 8 gallons. I don't like having fuel problems. I also went with the OS bubbleless clunk and love it. I have no idea how it gets every last drop out of the tank, but it does.

Back to the fuel line, I wouldn't throw the fuel line away. I use it around the sharp edges of the frame so that the insulation on my servo wires isn't worn away. Simply put a slit in it lengthwise and work it onto the edges. Works great.

Keep 'em flying.:YeaBaby:
LJS

were to buy? link?:D

[TheBum]

I replaced mine. In fact I replace mine every 8 gallons. I don't like having fuel problems.
Do you have any tricks for replacing the clunk line? It was a PITA to get the stopper into the tank; I can only imagine how hard it will be to get it out. Do you find that you also have to replace the stopper when you replace the clunk line?

[kidphc]

To get the clunk line out.
Pull the tank from the heli. Then using needle nose pliers pull the black pastic part of the stopper out, becareful not to pinch the rubber stopper. It's easiest to get the tip of the needle nose pliers under the plastic lip that seats against the gasket. You can lever it out of the rubber stopper. Everything should be easily removed at that point.

To remove the tank.
Grab the protruding part on the top part of the tank from the back of the heli. Press down enough to start pushing tank through the side of the frame. The rubber body gasket will try to come out. Remove the body gasket. Once the rubber gasket is freed from the heli the tank will slide out easily.

I was re-doing the clunk line and adding a header tank this weekend. I easily removed the clunk about 3 times in 10 minutes doing the above. For the rubber stopper if it isn't damage you should be able to reuse it. If it seems really swollen or damaged just replace it.

BTW, I changed the clunk line from the stock line out. If you hold the clunk directly over the plunger you'll see that it will completely kink when you let go of the clunk. I can only imagine it getting softer over time.

[TheBum]

OK, that makes sense: it's a two step removal (plastic then rubber) and a one step insertion (plastic and rubber as a single assembly). I know when I was doing the build that trying to insert the rubber part and then the plastic part afterward only caused the rubber part to be pushed further into the tank.

[kaan.gok]

Anyone have a recommendation for a good clunk line? (Except the Hayes neoprene line)?

[LJS]

Hi Bum,

I hold onto the rubber with a hemostat when I remove and replace it. The rubber is pretty robust and hasn't torn or been damaged by this. When putting it in, I lubricate the rubber with a little fuel. It's not too bad. I've had it out quite a few times and everything is holding up.

With regard to removing the tank, I have no idea why you would do that. I have done all my servicing with the tank installed.

Keep 'em flying.:YeaBaby:
LJS

[TheBum]

With regard to removing the tank, I have no idea why you would do that. I have done all my servicing with the tank installed.
I'll have a good reason: when it comes time to replace the clunk line, I'll probably take the opportunity to upgrade to the more transparent tank. Other than that, the only reason I could see for removing the tank is if you couldn't get good enough access to the stopper with the tank installed.

[helis101]

Anyone have a recommendation for a good clunk line? (Except the Hayes neoprene line)?I am useing this.http://www.heliproz.com/prodinfo.asp?number=181630 works great there out of stock but you may be able to find some where else.