Tank won't fit onto the top bar

Discussion in 'Painting, Welding, Bending and Gas Tanks' started by Brinson, Mar 26, 2011.

  1. Brinson

    Brinson New Member

    So the screws that come off the tank on my gas tank aren't quite long enough to mount the gas tank. Anyone have any idea on how else to mount it?

  2. xxSLiMxx

    xxSLiMxx Member

    Rivet the mounting brackets to the top of the frame. Then just screw on the gas tank.
  3. RedBaronX

    RedBaronX Member


  4. Slowbalt

    Slowbalt New Member

    Or if you don't have a rivet gun you can pick up self drilling metal screws at any hardware store.
  5. Wheres my dog

    Wheres my dog New Member

    Self tappers work very well.... not to sure there is enough meat in the top tube to hold them in with the weight of the filled gas tank sloshing around

    Perhaps some JB WELD and let it set for a full 24 hours... permanently attach it to the top bar then bolt the tank on
  6. RedBaronX

    RedBaronX Member

    I'm going to modify this idea... Extend the screws using long nuts to butt on a longer piece of threaded rod, and then epoxy the rod and nut in place (JB Weld being an epoxy)

    Long Nut:


    just brainstorming... this might not be strong enough...?
  7. motorpsycho

    motorpsycho Active Member

    #1 rivits will not be strong enough to hold a full tank of gas.
    #2 everyone always advises against drilling holes in bike frames, and rivits would require drilling holes in the frame.
    #3 rivits are normally made out of aluminum, and with the weight of a full tank of gas, vibrations from the engine on the frame and from bumps in the road, the rivits will eventually work themselves loose, or break.
    #4 jb weld MAY work for awhile but i wouldn't trust is as the only thing holding the gas tank to the frame. EVERY area that comes in contact with the j.b. weld must be 100% clean for it to bond. If there's paint on the frame tube, you would have to sand it down to bare metal because j.b. weld will not bond with paint. You would also have to sand down the underside of the tank where the j.b. weld would be. It may stick to a painted surface, but it will not bond with it, which is 2 different things. This of corse, would promote rusting on the frame tube (unless you have an alumnum frame) and the gas tank unless you somehow can paint over the 2 areas after you smear j.b. weld in there.

    The best idea yet is the one redbaronx has suggested. buy using long nuts like shown,which will allow you to add more threaded rod to extend the stock studs. This idea may not look very good, but if looks don't matter it will work.
    if you are very concerned about the looks, you could remove the stock studs and braze longer studs to the tank in their place. This would be major work if you don't know how to do it.
    Last edited: Mar 27, 2011
  8. xxSLiMxx

    xxSLiMxx Member

    Rivets work just find. My most use bike has the tank riveted on and it hasnt come lose. Im also running with a 4L tank Ive been rideing this way for the last 3 seasons (3yrs). Agreed drilling into the frame isnt good but your not drilling into the main part of the frame that the motor mounts too and if your useing some rubber between the motor/frame/mounts you shouldnt have much vibrations at all. True, you might lose a rivet over time but if one wears out pop a new one in, its not like theres 4 of them holding on the tank. If you dont notice that one pops out then your not doing proper maintance of your bike. IMO.
  9. wbuttry

    wbuttry Member

    or if anything add a back rack and mount the tank to the rack and run all your fuel lines that would be easier than all the other ideas that way no hole in the frame of the bike
  10. 5-7HEAVEN

    5-7HEAVEN Guest

    This is EXACTLY how I secured my HT 4-liter tank to my Diamondback Response bike. The bottom of the top bar would not accept the brackets, so I used flat plates.:detective:

    Hard to find metric threaded rods, so I use metric bolts with their heads cut off.

    No problems with this mounting.
  11. Irish John

    Irish John Guest

    Good idea RedBaron but the long nuts might get in the way when the bracket is tightened up.
  12. Irish John

    Irish John Guest

  13. Lazieboy

    Lazieboy Member


    Still waiting for my universal motor mount from kings so show up. They haven't even replied to my e-mails yet. On-line support is always off and dont reply back.:annoyed: about to drill threw frame to mount just to get it going.
  14. 5-7HEAVEN

    5-7HEAVEN Guest

    Too much theorizing.:detective:

    Mine works fine.
  15. Irish John

    Irish John Guest

    I know it does but I was talking about looks.
  16. 5-7HEAVEN

    5-7HEAVEN Guest

    For looks, cutting off the stock studs and welding on metric bolts would look best.:idea:
  17. Irish John

    Irish John Guest

    The Grubee tanks now have 5mm studs (might be 6mm?) where they once used to have 4mm studs. They have always been metric though because they aren't made in the USA and that is the only Imperial place left in the world. They still look spindley but that long nut used as a joiner might help the legs to look beefier and therefor better
  18. RedBaronX

    RedBaronX Member

    I'm not someone who has easy access to a welder (and I'm talking about a person who welds, not just the tools) so I'm someone who will always first look for a solution at the hardware store.
  19. wbuttry

    wbuttry Member

    i dont see anything wrong with my idea putting the tank on the back rack or adding a bigger tank on the rack for further distance
  20. RedBaronX

    RedBaronX Member

    there is nothing wrong with the idea. But many have other plans for the back rack or don't like the looks.