20" KTMc GP Socal Racer

Discussion in 'Motorized Bicycle Welding, Fabrication and Paintin' started by Wild Bill, May 7, 2016.

  1. Wild Bill

    Wild Bill New Member

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    This is the second build of this bike. The first time I took it to the races and it had every little problem you could have and it really seemed to be jinxed! None of the problems were related to the build, just murphys law I guess. I told myself I would never take it to the track again.
    But Now I have cut off the front triangle I built for it last time and I have stretched the wheelbase and changed the fork rake along with other changes so it will be a new bike and hopefully wont be such a hastle next time I race it.
    Since its kinda a rebuild it wont be so much work, I can reuse the engine mounts and most of the parts. This time I will use clip on bars and a full fairing so it will be a mini GP bike. The front fairing in the pics is too small and I have the right sized one ordered but it will be 4 weeks before it shows up.


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  2. Wild Bill

    Wild Bill New Member

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  3. 16v4nrbrgr

    16v4nrbrgr New Member

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    This is a real cool build Wild Bill, keep it up!
     
  4. LandSpeedRecord

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    Awesome build!!! Why is it every time I say to myself, no more non kit, non beach cruiser builds I come across a bike like this and HAVE to build one. Thanks for the inspiration, this is the first BMX build I really like.
     
  5. Wild Bill

    Wild Bill New Member

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    Thanks guys. I ordered a bigger fairing for ysr50 (Same wheelbase and diameter as this build) and it came the other day. Im very happy with it so far so I have ordered the lower half of the fairing and the windshield that I was holding off on until I was sure this was gonna work.
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    #5 Wild Bill, May 20, 2016
    Last edited: May 20, 2016
  6. Wild Bill

    Wild Bill New Member

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    Heres the 20 BMXer I built for my Son that he races in the Expert China Girl Class......

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  7. Wild Bill

    Wild Bill New Member

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    Made some progress, all the fairing parts came and I made the upper fairing mounts, I still have to make the lower mounts. The fairing is about 1/2 the weight I thought it would be.
    I just started on the fuel tank and seat/fender mounts, the seat is higher in the pic than it will be when finished. I may scrap the tank seat/fender for a one piece tank/seat/fender that's made by the same company that makes the fairng but its kinda pricey.

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  8. MotoMagz

    MotoMagz New Member

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    Nice work there! Really fits the bike well. Normally I would not be into the motorcycle look but for race bike it's a good look! That lil thing must scoot.
     
  9. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    That bike looks awesome!!!! (^)
     
  10. Wild Bill

    Wild Bill New Member

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    Thanks Norm! That's high praise coming from a guy that wins more than his share of races!
     
  11. Wild Bill

    Wild Bill New Member

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    Thank MotoMagz! I sure hope it scoots! Wont find out till the first test run.
     
  12. Wild Bill

    Wild Bill New Member

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  13. Chaz

    Chaz Member

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    That is one heck of a nice bike! I'll be watching for updates. Well done.
     
  14. Wild Bill

    Wild Bill New Member

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    Thanks Chaz.
     
  15. Wild Bill

    Wild Bill New Member

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    Almost time to tear it all apart and build the engine, then final assembly of the bike. You can see how much I had to cut off the fairing to get enuff pedal clearance.

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    #15 Wild Bill, Jul 7, 2016
    Last edited: Jul 7, 2016
  16. sbest

    sbest New Member

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    I love this thread, thanks for sharing!
     
  17. Wild Bill

    Wild Bill New Member

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    Thanks sbest.
     
  18. 16v4nrbrgr

    16v4nrbrgr New Member

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    Nice job on the Repsol livery Bill! That has always been one of my favorites and it works with the KTM orange theme as well. Seeing how this bmx has shaped up give me motivation to build the motorbicycle I was thinking about building that retains its pedals, my Motobike shed its pedals when I realized I'd need a super wide crankset to clear the trans, and I was concerned about digging pedal when leaning. Your frame mod moving the engine away from the pedals solves the engine width problem cleverly.
     
  19. JohnDoe

    JohnDoe New Member

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    If I may ask, I know that it is a BMX bike but is it a youth BMX? It seems kinda short for racing, or with out knee sliders at least. Speaking of which how tall is it from the seat to the ground? 28inchs or so? Also are you going to be doing something for laying down behind the wind screen or is it just for looks?

    Sincerely,
    John Doe
     
  20. Wild Bill

    Wild Bill New Member

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    Thanks 16v4, the pedal arm on the right side is widened to clear the case but the pedal arms are shorter to get ground clearance.

    John Doe, It was a 24" adult BMXer that I lengthened the front triangle for a longer wheelbase and increased the front rake and went to 20" wheels. The fairing will be used and is easy to duck behind. The seat happens to be 28" at the moment but may change if needed the first time on the track. And none of the bike is for looks, Im building it to race in the Socal Motor Bicycle Racing series to replace my current race bike.
     
    #20 Wild Bill, Jul 14, 2016
    Last edited: Jul 14, 2016

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