Gas tank filler necks and caps?

[Clayon]

Ok, I have been kicking around the idea of making up my own cylinder gas tanks because I need a couple for my bikes. But I am hung up on the filler neck and cap. I know I can buy em from chopper shops like Lowbrow Customs, etc. but I have the stuff to make my own so that's what I would like to do. My question is: what kind of threads should I use? just basic fine threads? Or should I use pipe threads? Also, I've noticed some of the filler neck kits you buy come with a steel neck, brass cap. Is there a reason? Or just appearance?

I appreciate any help.

 

[Bill Ellerby]

Sparks, that might cause the tank to catch fire and/or explode.

 

[bigrob]

Top off of a can of abs plumbing cement incuding cap and threads

 

[capguncowboy]

Top off of a can of abs plumbing cement incuding cap and threads

That's a novel idea. I can't say that I disagree with that.

You could use the top/lid from any metal can. Paint thinner comes to mind

 

[Clayon]

That's a good idea Rob, but I am not very good at brazing, and I only have a arc welder, so welding thin materials is pretty tough.

 

[rmm727]

try silver solder. I think its easier than brazing.

 

[Clayon]

try silver solder. I think its easier than brazing.

Thanks. I'll have to try that out.

 

[heavygs]

These guys have some cool stuff that I've bought for my bigger bikes and a couple minis

Bung King