Ask your WELDING questions here.

Discussion in 'The Garage' started by KTM640Dakar, Mar 5, 2007.

  1. fxstbiluigi

    fxstbiluigi crash test dummy

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    If you are that worried about zinc poisining and using acid to clean the metal why not buy a 4' or 5' x10' sheet of 16 or 18 ga metal that hasen't been galv'ed. It can't be that expensive and you'll save money and time by not halving to mess with the acid and clean-up after.
  2. ivantheterrible

    ivantheterrible Been here awhile

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    actually, the finished project will be out of 16 gauge steel, I mostly want to use the tin roofing for the model and to work out some of the kinks.
    Anyway, i found a suitable container, bought some muriatic acid, and it worked great. thanks for all the replies and hopefully I'll have something to show soon.
  3. KTM640Dakar

    KTM640Dakar Motorsick

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  4. Pago Cruiser

    Pago Cruiser Been here awhile

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    Have a late model XR1200 Sportster converted to a dual dual purpose hack. Lots of fun off-road, but I gotta start buying clutches by the 6-pack...Done all I can with countershaft and rear wheel sprockets. Need to work on crank and clutch basket sprocket sizing.

    Bummer for me: While the XR primary system (using a 3 row chain) is pretty much a clone of a Buell XB, NO ONE makes crank sprockets other than stock 34T (US) or 38T (Europe) for the XR, and a 35 is available for the Buell.

    I figure a 30T would be just about right. But the only way I can see to do it is to get a 30T made for an earlier Sportster, and then weld/machine a new inner spline hub from an XR donor sprocket. While I have a Miller MIG and putz with little stuff like saddlebag mounts, my skills mainly consist of being able to burn a hole in just about anything...

    All I am looking to find out is: Is this project doable? Welding hardened steel used in this stressed rotational/shear environment? I assume some pre and maybe post heat treatment would be required? Or should I be looking for a machinist to make me something from scratch?

    Thanks in advance.
  5. Twin-shocker

    Twin-shocker Long timer

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    Thats certainly possible. You will need to get the donor parts accurately machined, ideally with some kind of register so they fit together perfectly, then TIG weld them together. Forget about doing the job at home with a small MIG set, as failure or sprocket not running true is very likely if you try this.
  6. kirkster70

    kirkster70 moto junkie

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    Please post some photos. I'm very interested to see your scultpture. :freaky
  7. Pago Cruiser

    Pago Cruiser Been here awhile

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    Thanks Twin Shocker. I just wanted to make sure it was possible before I go down this path. Now I just need to find a machinist and a welder who know their stuff... have not been to this side of the forum much. Anybody here do custom work like this?
  8. Twin-shocker

    Twin-shocker Long timer

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    Try and find someone who can both machine and weld the sprocket. Easy enough here in the UK, but might be more difficult in the US though.
  9. NitroAcres

    NitroAcres MotoBiggots Suck

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    He could send it to you and you could fix it up for him...and send it back tootsweet...:queenie
  10. David R

    David R I been called a Nut Job..

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    I will do the welding. Machine shops around here are all baked up.

    David

    Free for an inmate. Heat treating included. Send me the machined pieces.
  11. ER70S-2

    ER70S-2 Long timer

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    :thumb
  12. NitroAcres

    NitroAcres MotoBiggots Suck

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    Send me the sprockets and I will get the centers EDM Wire cut, and machine them, then I can send them to DavidR for welding.. Problem solved.:D
  13. Pablo83

    Pablo83 Sleep, Wrench, Ride

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    What size welding stick (7018) should I use to make a 1/4" fillet?
  14. David R

    David R I been called a Nut Job..

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    DC Electrode +

    3/32 @ 85 amps many passes

    1/8" @ 135 amps less passes

    Help?
  15. rutard

    rutard Magnanimous Madcap

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    Hello All,

    My googling didn't turn anything up, so I'm forced to ask a question that has probably been answered.

    I have a cracked tranny case on a '95 R1100GS. This is the hairline crack:
    [​IMG]

    Is welding it a good option? It is currently at a local shop. The owner isn't worried about the welding part as much as getting the threading right.

    Does anyone know the type of alloy used in these cases?

    Would heat treating it be required?

    Thanks in advanced!
  16. NitroAcres

    NitroAcres MotoBiggots Suck

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    Welding no problem, (Fill the holes completely).. Heat treat not needed..

    I would however make a drill jig using the two good holes, and use the jig to locate the exact centers of the holes that are cracked, for drilling and tapping accurately.
  17. bergermeister

    bergermeister Long timer

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    here's probably an easy one:

    can I weld hot wheels cars together with MIG?
  18. rutard

    rutard Magnanimous Madcap

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    Thanks Nitro! :clap Hopefully going over cost and process with the welder tomorrow. I'll be sure to pass along your suggestion.
  19. NitroAcres

    NitroAcres MotoBiggots Suck

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    ProbablyNot..with any degree of real success.
  20. bergermeister

    bergermeister Long timer

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    thanks for your thoughts

    what are they made of, cast zinc? I want to make a wall piece for my kid with all his cars that have worn out (many from my childhood that were passed along). I suppose I could use jb weld or some other epoxy.