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Technical BODY, TECH reQUEST: how to make MC fenders

Discussion in 'The Hokey Ass Message Board' started by burndup, Jan 30, 2004.

  1. burndup
    Joined: Mar 11, 2002
    Posts: 1,938

    burndup
    Member
    from Norco, CA

    Heres to tech week never ending...

    Arguably off topic, but interesting and beneficial all the same... theres been a lot of chopper/bobber posts lately, something to do with the dead of Winter?

    Heck, tank fabrication would be interesting too.

    Thanks,
    J
     
  2. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

  3. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

  4. james
    Joined: May 18, 2001
    Posts: 1,064

    james
    Member

    This wasn't on a e-wheel, but if you want a cheap fender--- here's how I did mine. Started with a $13 trailer fender from tractor supply. The one with the closest radius was flat on one side and had a nice curved edge on the other.
    1-First I cut it in half-
     

    Attached Files:

  5. james
    Joined: May 18, 2001
    Posts: 1,064

    james
    Member

    I don't know how to do mutiple pics, so--
    2-- I figure the width I needed and divided by two and took it from the cuved sides-
     

    Attached Files:

  6. james
    Joined: May 18, 2001
    Posts: 1,064

    james
    Member

    3-- weld together and viola! a nice fender for cheap. Actually, no pics, but I did have to cut some slits on the edge and pull it into a slightly tighter radius.
     

    Attached Files:

  7. james
    Joined: May 18, 2001
    Posts: 1,064

    james
    Member

    Here's the finished fender. The peak is just a section of round rod bent to shape, welded on, slathered in bondo and shaped with a grinder.
     

    Attached Files:

  8. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

    Looks at least as good as anything on the shelf at OCC.
     
  9. james
    Joined: May 18, 2001
    Posts: 1,064

    james
    Member

    Not sure if that's an insult or a compliment [​IMG] [​IMG]
     
  10. burndup
    Joined: Mar 11, 2002
    Posts: 1,938

    burndup
    Member
    from Norco, CA

    dope, thanks!
     
  11. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

    [ QUOTE ]
    Not sure if that's an insult or a compliment

    [/ QUOTE ]

    I figure their catalog bought "custom" parts look better when they are still on the shelf,
    BEFORE they start getting "creative". [​IMG]
     
  12. burndup
    Joined: Mar 11, 2002
    Posts: 1,938

    burndup
    Member
    from Norco, CA

    Heck, do we have Farm and tractor/trailer supply places in So Cal? [​IMG]

    Seems its a rodders emporium of good inexpensive shit, chopper fenders, quarter elliptic springs for modifieds, etc...!
     
  13. Fastsporty
    Joined: Feb 8, 2003
    Posts: 309

    Fastsporty
    Member

  14. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

    Kinda looks like this one from WCC [​IMG] [​IMG]
     
  15. burndup
    Joined: Mar 11, 2002
    Posts: 1,938

    burndup
    Member
    from Norco, CA

    neato, they got a store in Van Nuys.... yep, ho hellva lotta watah around van nuys! [​IMG]
     
  16. Evilfordcoupe™
    Joined: May 22, 2001
    Posts: 1,831

    Evilfordcoupe™
    Member

    Very nice fender.

    Whats the taillight from??

    -Jason
     
  17. sawzall
    Joined: Jul 15, 2002
    Posts: 4,757

    sawzall
    Member

    ok I cant friggin sleep.. tokyo and i took the wives to a movie today.. I am freakin wide awake from not doing anything all afternoon!

    anyhow here you go.. an attempt to make a mc fender on my ewheel

    for sake of demonstration I made a "mini" fender, not full size and tried to do this as quickly as possible..
    [​IMG]

    step one find appropriate sized material to begin with.. here a piece of scrap aluminum I had been using as part of my dustpan.. cut to appropriate length and width and trim ends.. remember the ends will need retrimed later.. I did this so i wouldnt need to deal with the sharp corners at midnight!
     
  18. sawzall
    Joined: Jul 15, 2002
    Posts: 4,757

    sawzall
    Member

    begin on the sandbag using a wooden or plastic headed mallet beat the livin crap outta the middle of the panel.. your raising the center right now and therefore stretching the metal out

    [​IMG]
     
  19. sawzall
    Joined: Jul 15, 2002
    Posts: 4,757

    sawzall
    Member


    continue to beat the crap out of the panel until it starts to take some shape. just prior to this point I actually had to push the ends of the "fender" back down and flatten the panel so that I could get in to hit a couple more times[​IMG]
     
  20. sawzall
    Joined: Jul 15, 2002
    Posts: 4,757

    sawzall
    Member

    ok its starting to look like shit now keep goin pound the heck out of that poor little piece of sheetmetal. [​IMG]

    this is the area where the first series of "hammer strikes are made"

    this next photo shows the second row of hammer hits and the third row of strikes would be opposite the center of the panel about the same distance from the opposite edge of the "fender"

    [​IMG]
     
  21. sawzall
    Joined: Jul 15, 2002
    Posts: 4,757

    sawzall
    Member

    now its time to wheel alittle..
    [​IMG]

    at this point you want to wheel down the center of the fender ONLY. your creating the ridge or center radius.. which is, for the most part, dictated by the radi of yor wheels lower anvil.. (i didnt change lower anvils) in this demo so my radius is kinda flatter than I would like.

    next..

    its time to tuck and give this fender some roll. this first shot is my pOS tucking tool.
    place the metal between the gaps of this tool and rotate it (the metal) to create a pucker or tuck in the sheetmetal as shown below

    [​IMG]

    the photo above shows 3 tucks created with the tucking tool
    [​IMG]

    take the panel (which is now really looking bad.. back to the work bench and crush the tucks (this can be done with the wheel but I like to pound shit)

    next photo shows the first strike when crushing the tuck
    [​IMG]

    and the following photo shows second strike to use when crushin the tuck..
    [​IMG]

    basically when crushing the tuck you start at the center of the panel and hammer the tuck toward itself from altering angles (left then right or right then left.) this actually gathers the metal together and shrinks it.. (if you do it correctly)

    by working from the inside edge out you gather the metal together and shrink it up.








     
  22. sawzall
    Joined: Jul 15, 2002
    Posts: 4,757

    sawzall
    Member

    now that the tucks are somewhat crushed and flattened take what will be come your fender back to the ewheel and wheel from the outside edge up toward the center. be certain to stay away from the center work from the outside edge in
    [​IMG]

    above you can see that I am working at an angle to the centerline of the panel. I find this to be an advantage... again work the edges only with the ewheel. from the outside edge of the fender toward the center but do not cross over the center.

    again because I didnt change my lower anvil I am stuck with this sorta flat radius (for a fender) had I used a more radical radius I would have ultimately achieved a better arch to the fender.. (again i cant sleep and were only demonstrating here)
    [​IMG]


    ok last photo above shows wheel closer up.. again wheeling in toward the center of the panel.

    please note I used THIN aluminum in this demo so everything happened FAST. using steel or THICKER aluminum would be a better idea but would slow the process considerably.

    also this entire process may need repeated several times to achieve the exact curvature you desire.

    and again allow me to stress that i didnt feel like changing my lower anvils around to create a different side radius so the fender is flatter than i would have liked.

    later.. and good night.
    sawzall



     
  23. james
    Joined: May 18, 2001
    Posts: 1,064

    james
    Member

    Damn Swazall, I watch tv when I can't sleep! Very cool!
    Jason-- if you were asking me, it's a $5 model A light off ebay. Just an impulse buy that I bought before the bike for a shelf dust collector.
     
  24. burndup
    Joined: Mar 11, 2002
    Posts: 1,938

    burndup
    Member
    from Norco, CA

    ROCKIN Sawzall, when you wake up, show us the finished mini-bike fender!!

    Thanks,
    J
     

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