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closing off a 3 line tank?

Old 04-24-2008, 10:47 PM
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Avalanche2
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Default closing off a 3 line tank?

I have a 3 line tank...(vent, feed, fill) Just built a profile and only need 2 lines. (vent & feed) but, I have a 3rd.. (fill) dont need it... what is the best way to close off an unneeded line??? thank you thank you..
Old 04-24-2008, 11:03 PM
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shane.barton
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Default RE: closing off a 3 line tank?

Try these on the 3rd line.

http://www3.towerhobbies.com/cgi-bin...?&P=9&I=LXK138
Old 04-24-2008, 11:17 PM
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Avalanche2
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Default RE: closing off a 3 line tank?

I have a remote fuel system ( has the "dot" ) thought about running a short tube and use just the dot to plug it.. was hoping a drop of CA into the end of the tube might do it. Not sure if the fuel will eat it or not ?... thanks for the link.. I can just order another to replace mine.
Old 04-25-2008, 01:51 AM
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Default RE: closing off a 3 line tank?

Someone said drop some solder in the end to seal it off?
Old 04-25-2008, 02:10 AM
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the_madgenius
 
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Default RE: closing off a 3 line tank?

Hi Panzerd18, how is things down south ? And no one mentioned solder but using ca which wont work either as the line is silicone and wont stick too good, but using a fuel dot will fix the problem .
Bill
Old 04-25-2008, 03:21 AM
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panzerd18
 
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Default RE: closing off a 3 line tank?

Isn't there three pieces of alloy tube that pass through the clunk? Instead of attaching the silicon tube to the steel tube then plug the end I thought you could pull the silicon tube off and seal the alloy tube?
Old 04-25-2008, 05:26 AM
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da Rock
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Default RE: closing off a 3 line tank?

Nobody has mentioned epoxy, and for good reason.

If anyone considered any solution that uses epoxy, don't do it. Epoxy will break down if exposed continuously.

A very short bolt that fits the tubing works great. The size that would securely fit the inside diameter of the silicon tubing would be very light. And the threads insure a decent seal.

If I remember correctly, 4-40 works.
Old 04-25-2008, 05:33 AM
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Default RE: closing off a 3 line tank?

Anything that fits snugly into the tube.. it's rubber, after all, will work... within reason. Balsa, for instance would be a bad choice. If you feel as though it may come out, put a wire wrap around it to make sure it does not come off.
Old 04-25-2008, 07:20 AM
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MinnFlyer
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Default RE: closing off a 3 line tank?

I would either solder the tubing shut, or replace it with a piece of 1/8" rod.
Old 04-25-2008, 09:41 AM
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Default RE: closing off a 3 line tank?

Solder it shut or put a short piece of fuel tubing on it, fold over the end and zip tie or twist tie it. I have done this before.
Old 04-25-2008, 10:00 AM
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Default RE: closing off a 3 line tank?

Hi!
Why not put that third line to the pressure nipple on the silencer so you have a Uni-flow tank!
This is the best tank set up using an ordinary R/C tank next to a Tettra "Bubbless" tank. Very few R/C modelers seems to know about this...!
Old 04-25-2008, 10:41 AM
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Missileman
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Default RE: closing off a 3 line tank?

Another option is replace the stopper.
http://www3.towerhobbies.com/cgi-bin...?&I=LXD756&P=7
Old 04-25-2008, 04:01 PM
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Avalanche2
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Default RE: closing off a 3 line tank?

good ideas all... I'll either solder the tube or just run the 1/8 rod.... thanks again everyone.. what a great forum...
Old 04-26-2008, 09:15 PM
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Avalanche2
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Default RE: closing off a 3 line tank?

I did neither.. here is my finished close off... it was the simplest and isn't in the way of anything....
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