Air Tanks

Thanks Chris,
I pretty much planned setup is going to be a biatch, working at a hotrod shop ive learned a lot of oddball ways to make shit work. I was just worried about with making the frame the tank if there were going to be any specific weak points. I think im going to go with 2x3x.1875 tubing and run it all the way up until I tie it into a new front clip.

yeah trust its a bitch when you want to make your frame look nice but cant' screw in those nice tubing hold downs. And my frame is already powercoated. Zip ties it is!

Originally posted by UnusualFabrication



Originally posted by dragginoval



dragginoval- A firewall back frame tank will be too big. Too much more tank than 6 gallons (in my oppinion) is too much for electric compressors and a firewall back tank could easily be double that.

Max, Im prob. going to do an engine driven on my old school 302. plus Im prob. going to redo the rails with mandrel bent pieces and keep the air out of some of the crossmembers, probably just in the 2 crossmembers in the rear area.

My question to that is thickness of 2x3 and what other hang-ups or things should be known when building a frame to hold air.

Hang ups, no screwing anything into the frame such as clips to hold wiring, brake lines, fuel lines, etc. and leak testing on a large frame takes a ton of time and patience. Those were my biggest hurdles. Just weld on threaded bungs that are sealed on one end into the frame, that way the tank is still sealed but you can still use the pretty tubing clamps and such to hold down your brake lines and what not.

That works and I have down some of the important things with welded in bungs. It just sucks to have to leak test those as well after you put them in.

If/when I make some I am going to use these

http://sharpeproducts.thomasnet.com/viewitems/weld-on-drive-on-caps-domed-weld-on-caps/domed-weld-on-caps-steel?&forward=1

Something about flat plate ends that I don't trust. Plus I think it looks a little cheesy (just my opinion)

t

mmmmmmmmmmmmmmmmm pancakes and maple syrup right from my maple tree in my back yard... too bad i have cut it down because its mandatory when your a lumberjack like me... fuckin canadian laws...

I'm gonna use the pipe rings from Lowe's and weld them to the frame to hold the fuel lines, brake lines, and rear electical. THat way I don't have to screw anything in.

Sorry guys, I've been out of town at the Havoc show (can you believe it? Me at a show?)...

The only thing that I would be extra cautios about with a frame tank is stress risers. When using the frame as a tank as well as the structure of the chassis creates more stresses and so a small crack can become a big issues. I haven't ever had and issues with a frame tank and I still prefer to use them, but just be sure that all of the stresses can "flow" through the chassis as smoothly as possible.

Of course trying to explain each and everything on a forum site is a bit overwhelming, so ya'll are gonna gave to do your own homework on stress risers.

If I go with a thicker wall tubeing like 3/16 or 1/4 can I use something else tham DOM?

You can easily get away with seamed tubing, I've just had leaks from the factory out of the welded seam.