My new home-made stainless steel gas tank

Discussion in 'Photos & Bicycle Builds' started by lazylightning@mail.r, Dec 19, 2015.

  1. lazylightning@mail.r

    lazylightning@mail.r Active Member

    Here's some photos of my new stainless steel gas tank. I made it myself out of pieces of scrap stainless sheet of varying thicknesses. The cap has three levels inside to catch drops and prevent splattering when going over bumpy roads. The first two levels have small spiral labyrinths connected by small holes. Once the bike fell over with a full tank and it took me four seconds to get to the bike. Not a single drop made it out of the tank. As you can see, I used stainless on my custom tuned torque pipe. I ride in the winter in a big city with ice spikes. Lots of chemicals are dumped on the streets to melt the ice and when that mix gets splashed up onto a hot pipe, it rusts through in a few weeks time. My next header pipe will definitely be made of stainless steel.

    I don't see a way to change the order of the photos as they will appear in the post on this new system. So they're out of order....

    Attached Files:

  2. Bruce Hawkins

    Bruce Hawkins New Member

    I like the cap on your tank, has that steam punk look.
    lazylightning@mail.r likes this.
  3. bakaneko

    bakaneko Active Member

    Very nice. BTW, how many gallons is the tank? I am guessing 1.5 o_O
    lazylightning@mail.r likes this.
  4. lazylightning@mail.r

    lazylightning@mail.r Active Member

    Thanks! It wasn't really a matter of choice. I just had a piece of 4mm stainless steel and had very little time to make the spring pressure locking bridge. I may weld some more on to it later. I thought up and made the little locking latches in about three hours and barely got out of the shop in time before the subway closed. Then I had to pack all the next day for a flight out the next day after that with the bike all disassembled and in check in baggage. My wife and mother in law are have hearts of gold and sacrificed their check in baggage for my bike ;-)
  5. lazylightning@mail.r

    lazylightning@mail.r Active Member

    You must be kidding, it's only 0.5 gallons. And that's plenty heavy for me, I peddle alot for the exercise and staying visible to the chicks on the boardwalks)))
  6. Arty

    Arty Active Member

    That's a really nice tank!
    Was the stainless hard to weld? - Were you using TIG, MIG, or Oxy?
    lazylightning@mail.r likes this.
  7. lazylightning@mail.r

    lazylightning@mail.r Active Member

    Thanks! Stainless steel is tricky to weld. When welding thin sheet like this one has to bend the pieces so the edges match perfectly to the smallest fraction of a milimeter and then you can just go along the edge with the TIG arc and melt it so the edges just melt into one. Sometimes a donor rod is neccesary and needs to be ready at all times. Welding the 0.5mm stainless I used to make the guts of the miracle gas cap was hard. It looked nasty on the inner side when I was done welding it, but some filing, sanding and jbweld fixed her up just fine. The main thing is that she works great. The tank itself is like 1.3mm sheet and turned out pretty heavy. But I wont have to worry that much about it being bent in mild mishaps. TIG was the method I used. Yesterday I used the TIG to add some aluminum to the outside wall of the transfers of a new cylinder I am modding. For more mating surface after I widen the transfer passages alot. I was taught a secret last night. You take a torch and heat the part up pretty good, then the part takes the aluminum really easy. I was pleased at how well I was able to do it after that. A must for aluminum welding! I will have to remove 5mm from it on a lathe anyway because I use a shorter conrod from the Yamaha Jog (with oil holes machined in by hand-dremel and diamond bits). After lathing it will have a perfect mating surface again at the bottom of the cylinder. I'll post that one in a few days.
  8. Arty

    Arty Active Member

    Yeah - I forgot to mention the cap. - -It's tooo coool!
    lazylightning@mail.r likes this.
  9. lazylightning@mail.r

    lazylightning@mail.r Active Member

    I had studied the options for stopping the drip from bumpy roads. I didn't want to put a tube out the top like on a dirt bike, so I decided to try something different. Of course everyone didn't think it would work, but I was on alot of bumpy roads the whole time and a single drop never made it out! So it's possible to make one for sure.