choppin n weld'n another 'junk yard' frame

Discussion in 'Motorized Bicycle Welding, Fabrication and Paintin' started by scratchbuilder, Jan 26, 2017.

  1. scratchbuilder

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    On my 3hp crank I had to cut off the end so the pull start would work. The 3.5 dont use the old flywheel screw on thing-a-ma-bob. just a nut. I'm gonna just use the engine to mock up my drive while I swap meet for a 4hp. Getting the brakes worked out. A before and after pic of how I will finish the look.
     

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    #61 scratchbuilder, Mar 3, 2017
    Last edited: Mar 3, 2017
  2. scratchbuilder

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    Builds on hold for couple weeks...back sprain.
     
  3. MEASURE TWICE

    MEASURE TWICE Active Member

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    Get well soon! If possible think how to avoid what causes the strain and find a different way in the future.
     
  4. scratchbuilder

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    I hope to ,thx MT. There's a bit of ole Arthur Rightust mixed in too. I'll see if I can get the seat stuff together sit in bed and do it up. I'll be watchin
     
  5. MEASURE TWICE

    MEASURE TWICE Active Member

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    One think my dad always said work at the right height. He was meaning use a table or bench to put what your working on and not bend down. The motor bike I will have to do some welding on for the new foot pegs I have.

    It is necessary to remove the gas tank, carb (engine also), and wheels to not burn them during the welding. So anyway then it is light (not super light) enough so though that I can put it up on a work bench to work on it.

    I though am guilty of not using the bench enough, since not everything requires removal of enough components that I can lift it. Currently at 130 lbs and probably will be adding 7 more with the brackets.

    A way I found I could make the angles for welding metal parts stay in position, I just took some thin flexible steel sheet and welded it to the two thicker metal parts to be joined.

    Then I went back to my bike and kept bending the joint made of the flexible metal till it was true with level and t-square. Simply carry it over to a vise clamped to a bench top and weld it just a bit.

    Go back and check. If not correct, then break small weld and bend flexible metal for another attempt. Then when right fully weld up and grind away the thin metal and who know to the wiser that it was even ever there in the first place.
     

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  6. scratchbuilder

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    Nice pegs.should not slip off those. I took my 6'x2' flatbed trailer I made and converted it to a work table. Does nicely. I have to pop the front wheel up, then lift the back up.
     
  7. scratchbuilder

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    Back to the build. Covered my seat pan...can ya tell its my first...lol..pic coming.
     
  8. MEASURE TWICE

    MEASURE TWICE Active Member

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    I did not go for looks on doing up a seat I made. Heck load of yellow tape holding the foam. I also need time and eventually will put a more permanent nice cover.
    Painting the frame also waiting for dry weather so I have time long enough for it to cure properly.

    Good excuses?
     
  9. scratchbuilder

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    Good excuses..i know those. Looks like I got the front waaaay too long. Here's the excuse...its my first one
     

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    #69 scratchbuilder, May 16, 2017
    Last edited: May 16, 2017
  10. scratchbuilder

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  11. scratchbuilder

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    Here's what I'm work'n on. My first seat...
     

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    Dan likes this.
  12. scratchbuilder

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    Wow, first time seeing the new site! Gonna have to get in here and learn it. Nice n easy pic post!!
     
  13. Dan

    Dan Staff
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    Awesome build! Really cool to just catch it and see her come along like this!
     
  14. scratchbuilder

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    Thanks Dan..I'm given the pineapple sprocket a go, after build'n shifters..i prolly wont like it
     
  15. Dan

    Dan Staff
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    I happened to be consider'n just that when I saw your post come in. CKangeroo (Roo) turned me onto some really cool, big box, cruiser bikes. I wanna do some budget builds for a quick turnover.

    But was thinking about rag joints vs the higher end sprocket deals. Cheaper wheels, the spokes just bend with the torque of a 4 smoke.

    So just happened to be thinking of instead of a rag joint. Make it a rag joint+.

    Same deal but larger backing than the normal rag joint. That a sprocket bolts to. :confused:
    So the stress is spread over a larger area but is still a universal fit. (Universal; one size fits none perfectly) But this might.

    If nothing else, would make switching sprockets easier.....

    But great build.
    Dave (31) did a "junkyard build" and I confused your thread title with his. Awesome build as well. Think he did it for like .34 cents or some thing crazy like that. All found parts except he had to buy a washer or some thing. Was amazing. He "saddle bag" mounted a 4 stroke engine back when the rest of us were still trying to figure out 2 smokes.
     

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