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Project The Yamaha R4 (Glacially Slow Project)

Discussion in 'Other Projects - Other Bikes (non 250's)' started by maelstrom, Dec 20, 2014.

  1. ruckusman

    ruckusman Well-Known Member Premium Member Dirty Wheel Club

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    OH My titanium - that is seriously impressive and I don't want to know the price because even the fantasy shopper version of me cannot afford it
     
  2. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    I think the finished price will be competitive. Right now I am trying to get some specialty tooling to speed up the process and keep the price down.
     
  3. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    sharkenstein-2016-horror-movie.jpg
    No, no, not Sharkenstein, Clampenstein!
    Santa didn't bring me a CNC milling machine so have to do things the Dr. Murdo way.
    Start with an R1 top clamp and bone saw,
    5VY_clamp.jpg
    make jig,
    Clampenstein_01.jpg
    perform clampectomy,
    Clampenstein_02.jpg
    close wounds.
    Clampenstein_03.jpg
    Now a bit of tidying up and will be ready for paint. My Thai buddy let me attack his Hass VF7 VMC but I was ill prepared, so boring the front wheel to take the R1 bearings is not yet done and that is holding up the front end now. I have to work on the workholding for the wheel. We came up with a new plan but I am still worried about chatter.
     
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    Last edited: Feb 17, 2018
  4. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    After a Millennium:
    Took a while to get the thread sorted but I just chased it with a threading die for the final pass. I finished the bearing journals on this stem to +/- 0.005mm. That is the machined finish, no polishing. I am glad that I bought the lathe and did it myself. Have not been able to get the wheel finished yet and nothing I can do about that. Can't ask my friend to stop making money on his machine just so I can use it. Next pic will be of the forks mounted into the frame. Woohoo!
    BottomClamp_04.jpg
     
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  5. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Poor Yamaha, bloody Honda is stealing all the attention. Clampenstein is finished. The little pits are where I ran out of gas when welding up the sticker recess. My friend could not believe that I could live with myself but I see it more as a beauty spot, like the mole on Marilyn's cheek :) The top clamp looks grey in this pic but it is just a reflection. Powdercoater will send today, so I can put the forks in on Monday, drip, drip.
    ClampsPainted.jpg
     
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    Last edited: Jun 14, 2018
  6. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Half a Hugger:
    Played around with the twisted piece of junk that I bought from Germany. Best option was to just cut it in half and I will try to straighten some of the pieces and make the missing bits to fit the 400.
    HalfHugger.jpg
     
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  7. ruckusman

    ruckusman Well-Known Member Premium Member Dirty Wheel Club

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    half a hugger, an embrace from a one armed man?
     
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