edgersh

hi guys iam shore ther is a thread about this somewere but i cant find it i would like to
build a fuel tank from a 32 once water bottle. can anyone tell me how to seal the cap
so it does not leak i well be using gas.
thank eddie

aussiesteve

The very best ways I have found are

http://www.pspmfg.com/FijiAluminumwa...eltankcap.html

Or

[link]http://www.pspmfg.com/WaterBottleFuelTankCap.html[/link]

Some use fuel proof sealant and fittings but the above products simply work very well at a similar overall price.

MetallicaJunkie

all my gassers now use water/soda bottles... not to save money like most assume, and it's not cheaper , but because i got sick and tired of messing with stoppers... its a pain in the balls having to desolder barbs inorder to remove the copper/brass lines from the stopper.... its funny how some people move over to water bottles but still insist on using stoppers

its also really convenient having a clear tank so you can see whats going on inside

here is an example i followed, the only difference in mine is that i use a Walbro felt clunk


you can buy the fittings at www.aircraftinternational.com or www.centralhobbies.com

tande

My Feedback: (48)

Fittings from here http://www.pspmfg.com/index.html & any size "fiji" water bottle, or others that use the tapered lip cap seal design (no gasket)....from what I've found, soda bottles & others use a gasket cap seal design & the gasket & fuel don't mix (your mileage may vary)...with the tapered lip design; no sealant required....I've been using this set/up in a half dozen airframes with ZERO issues....FWIW

krayzc-RCU

My Feedback: (31)

there is a HUGE thread on the flyi ng g iants on that deal

Tony Hallo

I cut a disc out 1/32 copper sheet the size of the bottle top, soldered 3-5/32" tubes, drilled a hole in the cap to allow the tubes to pass and screwed together without sealer, no leaks, nothing to buy. Everything came out of the scrap bin.

MetallicaJunkie,
Nice pickup tube, I assume it's one piece? Good to the last drop.

exeter_acres

My Feedback: (2)

I use a juice bottle with B&B fittings...

I seal the cap with Seal All.. available at auto parts stores.

MetallicaJunkie

yes its a one piece... i drill out the clunk and solder in a piece of copper tubing... i got that idea from Scott Gerber of Effing Giants

i dont use that method for fuel pick up anymore, i tooks TOMs advice and now use Walbro Felt Clunks in all my gas tanks and gas cans ... they filter down to 10 microns, better than any other filter i have used

MetallicaJunkie

B&B fittings were awesome, its too bad they will no longer be available my brother has a couple of his nalgene tanks and fittings,,, they were top notch