Rear Gas Tank Mount Idea

Discussion in 'Motorized Bicycle Welding, Fabrication and Paintin' started by RoverGT, Mar 2, 2012.

  1. happycheapskate

    happycheapskate New Member

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    http://www.cometkartsales.com/store/chassis/cpa/images/5qttartank.jpg
    Comet has these for $25, 5 QT, probably out of stock constantly.

    [​IMG]
    http://www.cometkartsales.com/store/chassis/cpa/images/5qttartank.jpg

    Looks like you should be able to use a Wald $10 rear rack and that pretty easily, if you source something for a brace under the rack tubes. other $15 racks that have the flat alu or steel plate in the center, should work by drilling the appropriate holes and adding some hardware. It's only 2 bolts and comes with a petcock.
     
  2. scotto-

    scotto- Custom 4-Stroke Bike Builder

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    I'd bolt that tank to a top tube before I'd even think of mounting the peanut tank to a top tube anymore.....seriously.

    dnut
     
  3. happycheapskate

    happycheapskate New Member

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    (10"l x 7"w x 9"t)
    (12"l at the mount tabs)
    http://www.cometkartsales.com/store/chassis/cpa/fuel.htm from this page, no specific link now bc. its out of stock. Call!

    I'd recommend some kind of clamps or brackets then! 1 gal of gas is about 8 or 9 lb. So the whole rig is going to be heavy, and it's meant for a flat surface.

    The wedge shape is awesome though. You might be able to get it in some diamond frames if you have a front or rear engine like a Dax.

    This MIGHT fit inside metal ammo cans! Measure twice!
    http://www.cometkartsales.com/store/chassis/cpa/images/2qttartank-sm.jpg
    [​IMG]
    Out of Stock Plastic 2qt Fuel Tank with Cap and Shutoff Valve $23.00
    (7.5"l x 4"w x 6.5"t)

    Metal ammo can $14.88 !
    Regular 50 caliber measures: 11.8 Length x 6 Width x 7.3 Height (can hold 100 cartridges 50 caliber)
    http://west.loadup.com/military/surplus/1170.html
    [​IMG] http://west.loadup.com/images/items/1170.jpg
     
    #23 happycheapskate, Apr 23, 2012
    Last edited: Apr 23, 2012
  4. happycheapskate

    happycheapskate New Member

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  5. happycheapskate

    happycheapskate New Member

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    [​IMG] on the back, even better!

    [​IMG] Make this tank for $10. If you want to paint it, scuff the whole thing (new) with 3m green kitchen scrubbies, wipe down, and use Fusion paint. Let it cure 2 days! It works.

     
  6. happycheapskate

    happycheapskate New Member

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  7. zatdattyo

    zatdattyo New Member

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    personally I see where the Beverage distributors have now been putting there beer in the mini kegs. Im going that route when I finish the beer. LOL
     
  8. flmotorbikes

    flmotorbikes New Member

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    Good idea. I've done that with one of my friction drives just beware of the vibration if you have a 2 stroke
     
  9. tooljunkie

    tooljunkie Member

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    i have considered an automotive fuel cap and filler neck from one of the old cars in my back 40.
    cut filler neck off and weld to whatever tank i build.
    another one is crank out something on my lathe,with an inlet valve to let air in so fuel will drain out petcock.and a check ball to keep gas in when its sloshing.
    i have a couple old coleman cookstoves,the filler is a nice size.

    oh.forgot why i was here,like the bike,the ammo box idea is cool.
    aftermarket snowmobile parts suppliers have rear fuel storage tanks,roughly one gallon.
    cap and gas line fitting ready to go.
     
    #29 tooljunkie, Apr 27, 2012
    Last edited: Apr 28, 2012
  10. happycheapskate

    happycheapskate New Member

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    If you cut the fuel neck from an old mower or tiller (briggs or tecumseh), you can find new vented ( 2 way) caps for cheap.



    Here is a check-ball vent I made today for $0, but the check-ball shuts off fuel flow if there's no return hose from carb. Best to use a motorcycle dirt-bike tank vent ($10) for gravity feed.

    My home-made vent (without check ball it works, but can leak fumes when parked)

    [​IMG]

    Motorcycle vent $10 for good metal one
    [​IMG] http://ecx.images-amazon.com/images/I/21hJWlcZmEL._SL500_AA300_.jpg
    http://www.amazon.com/Tusk-Tank-Ven...RPJG/ref=sr_1_1?ie=UTF8&qid=1335584769&sr=8-1



     
    #30 happycheapskate, Apr 27, 2012
    Last edited: Apr 27, 2012
  11. happycheapskate

    happycheapskate New Member

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  12. happycheapskate

    happycheapskate New Member

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    Some dude put a pocketbike tank on his FD. This doesn't look too bad!
    Maybe if you find a crapped out or wrecked pocketbike on CL or EB, you could get a tank, headlights, battery, blinker system, switches, levers, fairings, maybe even a running motor.
    Most of the pocketbike engines can mount straight onto a Dax FD.
    I saw someone put the fairing with headlights from a pocketbike onto a mountain bike. It was a little wierd but it worked!

    I'm not sure how it is mounted though. I think most pocketbikes have 1 or 2 center tabs on the tank. Maybe he has an L shaped bracket.

    [​IMG]
     
    #32 happycheapskate, Apr 28, 2012
    Last edited: Apr 28, 2012
  13. Kermit42

    Kermit42 New Member

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    I like the back mount. As for that ammo box, fish tank sealer? around the edges and fabricate a cap so it doesn't open the whole thing? Not sure if it will work As im thinking but ifs worth looking into I think.
     
  14. happycheapskate

    happycheapskate New Member

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    Just remember you are dealing with a volatile and explosive fuel that is tied to an internal combustion engine powered by a sparking ignition. You could possibly weld an ammo box after making the tank neck. It seems a better idea to install a plastic tank in there.
     
  15. scotto-

    scotto- Custom 4-Stroke Bike Builder

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    Liquid ammo? Ammo cans look cool and all but they are not meant to contain liquid. Used to contain proper liquid containers, I don't see a problem with that at all. Use your head when dealing with liquid explosives....seriously.
     
  16. Harold_B

    Harold_B Member

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    I bought a NOS B&S gas tank from a lawn mower parts supply on eBay. Mount is steel strap from Home Depot painted semi-gloss black. Total cost with fittings and hoses etc has been about $90. Holds a gallon.
     

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  17. Kermit42

    Kermit42 New Member

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    An ammo can is made to hold explosives. Put...mount a plastic gas tank in there and call it a day. Now your gas tank is reinforced.
     
  18. happycheapskate

    happycheapskate New Member

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    Yes, I covered a few plastic go-kart tanks that fit inside ammo cans.
     
  19. tooljunkie

    tooljunkie Member

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    so,i cut up a bunk bed for my buddy,to make it a raised bed,no second bunk.
    i had this pile of bent pipes,wondering what to do with them.
    i sectioned out two of the bends,welded them to a third one that was on a 20"long pipe
    lined it up with the top tube,and elbows turn up and to the right,beside the handlebar stem.cap is from an inflatable boat,chrome plated brass.
    it happens to have a 2" diameter base,and after tinning pipe and brass,it joined nicely.

    turned a block on the lathe for seat post end to take an engine mount bracket to hold it on to seat post.threaded it for 1/8"npt.
    will post pics tomorrow.
    it wont hold a lot of gas,but i dont go really far anyway.
     
  20. GearNut

    GearNut Active Member

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    I am looking forward to the pics, tooljunkie.
    Your tank sounds interesting!
     

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