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Building Tips and technical articles. => Building techniques => Topic started by: FLOYD CARTER on March 03, 2014, 02:41:57 PM

Title: J-B Weld for tanks?
Post by: FLOYD CARTER on March 03, 2014, 02:41:57 PM
Whoops!  Building a tin tank and now I can't get in through the front end cap to fasten the far end of the fuel pickup (copper) and uni-flow tube.  So....trying J-B Weld.  Any comments?

If it doesn't work, I'll start over and assemble the end caps in the proper order.

F.C.
Title: Re: J-B Weld for tanks?
Post by: Dave_Trible on March 03, 2014, 03:02:34 PM
Floyd I think it would work for a while at least.  Way back I used the stuff to make a muffler that held up pretty well and have molded venturis with it.  Really long term or permanently mounted tank I'd likely bite the bullet and start over.

Dave
Title: Re: J-B Weld for tanks?
Post by: GregArdill on March 09, 2014, 05:33:37 AM
A mate of mine used it as an emergency repair when the tank started leaking just before a contest.

It got him through the contest, but I don't know if he later fixed it properly or it continued to seal.

Unless you're going to make the tank accessible I wouldn't risk it. It is epoxy based after all.

Greg
Title: Re: J-B Weld for tanks?
Post by: Noel Corney on March 10, 2014, 12:16:01 AM
Have used the 24 hr. cure to assemble carbon fibre tanks, Never had a problem. Noel.
Title: Re: J-B Weld for tanks?
Post by: john e. holliday on March 10, 2014, 09:36:18 AM
If the area of the leak is cleaned inside and out it should work.  I have done it once, but I try to do better solder jobs each time.   Did use the J-B Weld on a car radiator a hole was punched into.   When I got rid of the vehicle several years later it was still solid, no leaks.
Title: Re: J-B Weld for tanks?
Post by: FLOYD CARTER on March 10, 2014, 10:20:39 AM
I, also, have repaired a leaking radiator with JB Weld.  But that is water (and some ethylene glycol) not glo fuel.

Anyway, my plane will have a hatch for access to the tank.  It will be an interesting experiment.

Floyd