B&B fuel tank question...

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GremlinX · 04-26-2007, 08:24 AM

SleepyC turned me onto the B & B tank which looks awesome and they make a rectangular tank to fit my application to boot! What the directions don't show is a seal or O ring where the fittings run through the tank and cap. Or are there any? I was just a little leary of no seals or O rings where the fittings go through the actual tank. Great looking tank though. Thanks for the heads up on it.

vsnap · 04-26-2007, 09:56 AM

Screw them in and use thick CA around the edges. Used them for years no leaks.

Dangerous Dan · 04-26-2007, 10:01 AM

Bunky F. Knuckle · 04-26-2007, 01:18 PM

I use ZAP A DAP A GOO for a seal. The tanks are tight sealing before a sealant is used. You will not have a problem. I mostly use ZAP for security of the tank lid not coming off.

Bunky F. Knuckle · 04-26-2007, 01:20 PM

I also use the fittings that B&B sells on their site. No problems!!!

xtreem3d · 04-26-2007, 05:12 PM

fwiw...you can take something like blenderm and wrap the cap to the bottle so it won't start to unscrew. if you have a sheeted foam inside it will get ruined if the tank ever leaks.

rc4flying · 04-26-2007, 05:15 PM

I have been using these tank for.....Heck, it has been that long.
If you install the fitting properly and tighten the cap, they are basicly full proof.

When making the 1/4" holes for the fittings, I use a sharpen brass tubing and slow speed with the drill to prevent any melting. The fitting will be a snug fit in the tank. I install the fittings from the inside and put the nuts on the outside. I use a goos pair of pliers to grip the fittings just enough as to not slip when using a wrench to tighten the nuts down. There is no "O" ring needed. And don't be afraid to tighten them .
As for the Cap, there is a flange on the inside of the cap to seal it. Here I can't stress that you want to not be afraid to tighten this cap down. I have even used a pair of channel locks to add just that little bit that I can't do by hand.

When this is all done, I pressure check the tank by running a fuel tubing between 2 of the fittings and use the third to use a piece of tubing to blow air into the tank. Hold under a sink of calm water to look for leaks. If any apear, just tighten the fitting a hair more.

I have never used anything to add addition sealing and have never had any issues. Also, if silicon is used and there is a leak, the gas will go right past the silicon.

Just a few setups of mine in pics.

04-26-2007, 08:24 AM	#1
GremlinX Father of the Scale Furum Join Date: Jan 2006 Location: Chapel Hill, TN Age: 34 Posts: 4,577	B&B fuel tank question... SleepyC turned me onto the B & B tank which looks awesome and they make a rectangular tank to fit my application to boot! What the directions don't show is a seal or O ring where the fittings run through the tank and cap. Or are there any? I was just a little leary of no seals or O rings where the fittings go through the actual tank. Great looking tank though. Thanks for the heads up on it. __________________ "I'll have the roast duck with the mango salsa" Kit builders check out.... http://bobflies.com/ 2.4 GHz is for your home telephone... 14MZ and 72 MHz for huckin' baby!!

04-26-2007, 09:56 AM	#2
vsnap Bad-ass Super Contributer! Join Date: Jun 2006 Location: Brownsburg Posts: 1,924	Re: B&B fuel tank question... Screw them in and use thick CA around the edges. Used them for years no leaks.

04-26-2007, 10:01 AM	#3
Dangerous Dan Bad-ass Super Contributer! Join Date: Jan 2006 Location: Gainesville, TX Age: 38 Posts: 3,557 Awards Showcase Total Awards: 1	Re: B&B fuel tank question... __________________ Cactus Aviation http://www.cactusaviation.com/ Fromeco http://www.fromeco.org/ Free Advice: Do Not Fly In Cow Pastures! Don't Clean your Engine With oven Cleaner! Check batteries after smoke is released from throttle servo! Don't put reeds in Backwards!

04-26-2007, 01:18 PM	#4
Bunky F. Knuckle I'm done!!! Your loss! Join Date: Jan 2006 Location: TFC Posts: 3,338	Re: B&B fuel tank question... I use ZAP A DAP A GOO for a seal. The tanks are tight sealing before a sealant is used. You will not have a problem. I mostly use ZAP for security of the tank lid not coming off. __________________ Insert witty comment here

04-26-2007, 01:20 PM	#5
Bunky F. Knuckle I'm done!!! Your loss! Join Date: Jan 2006 Location: TFC Posts: 3,338	Re: B&B fuel tank question... I also use the fittings that B&B sells on their site. No problems!!! __________________ Insert witty comment here

04-26-2007, 05:12 PM	#6
xtreem3d see the glass half full Join Date: Jan 2006 Location: St. Louis, MO Posts: 586	Re: B&B fuel tank question... fwiw...you can take something like blenderm and wrap the cap to the bottle so it won't start to unscrew. if you have a sheeted foam inside it will get ruined if the tank ever leaks.

04-26-2007, 05:15 PM	#7
rc4flying Bad-ass Super Contributer! Join Date: Jan 2006 Location: Hermitage, Pa Age: 57 Posts: 2,603	Re: B&B fuel tank question... I have been using these tank for.....Heck, it has been that long. If you install the fitting properly and tighten the cap, they are basicly full proof. When making the 1/4" holes for the fittings, I use a sharpen brass tubing and slow speed with the drill to prevent any melting. The fitting will be a snug fit in the tank. I install the fittings from the inside and put the nuts on the outside. I use a goos pair of pliers to grip the fittings just enough as to not slip when using a wrench to tighten the nuts down. There is no "O" ring needed. And don't be afraid to tighten them . As for the Cap, there is a flange on the inside of the cap to seal it. Here I can't stress that you want to not be afraid to tighten this cap down. I have even used a pair of channel locks to add just that little bit that I can't do by hand. When this is all done, I pressure check the tank by running a fuel tubing between 2 of the fittings and use the third to use a piece of tubing to blow air into the tank. Hold under a sink of calm water to look for leaks. If any apear, just tighten the fitting a hair more. I have never used anything to add addition sealing and have never had any issues. Also, if silicon is used and there is a leak, the gas will go right past the silicon. Just a few setups of mine in pics. Attached Thumbnails 132.7 KB · Views: 80 818.1 KB · Views: 106 76.4 KB · Views: 77 99.7 KB · Views: 85 __________________ rc4flying Papa Stek Joe *Team Futaba* Desert Aircraft Carden Aircraft "Fly them hard, but fly them safe"

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