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Thread: latest project: "Old Cro" the R-evolution

  1. #1
    VANZEN
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    latest project: "Old Cro" the R-evolution

    The design work is done (after years of research, sourcing parts, and saving funds) and the actualization of my design obsession has finally begun. First order of business: a track-worthy chassis. Like a new father, I'm anxious to share pictures of the new-born, and entertain thoughts and comments.

    Progress so far:



    design: vanzen
    frame fabrication: Randy Illg & FRAMECRAFTERS

    stay tuned for further development..

    more pics at ROCKERBOXER:http://www.rockerboxer.com/page/page/5324463.htm
    Last edited by vanzen; 12-19-2007 at 03:47 PM.

  2. #2
    Has the GS-Lust The_Veg's Avatar
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    I can't wait to see the progress!
    2012 R1200GS

    "If you can't fix it with a hammer, it's electrical." -somebody's dad

  3. #3
    sumran
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  4. #4
    Focused kbasa's Avatar
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    Pass the salt.
    Dave Swider
    Marin County, CA

    Some bikes. Some with motors, some without.

  5. #5
    VANZEN
    Guest

    back again:

    A composite thumb-nail of my blueprint drawings:



    kbasa: I could load a disk with development sketches that plot the course of this result !

  6. #6
    Registered User lkchris's Avatar
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    Another innocent Airhead bites the dust.

    Makes the remaining intact ones more valuable, I suppose.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S, '84 R80G/S

  7. #7
    Registered User
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    What do you have in mind for the front suspension?

  8. #8
    advrider.com
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    Quote Originally Posted by lkchris View Post
    Another innocent Airhead bites the dust.

    Makes the remaining intact ones more valuable, I suppose.
    Do you ever have positive input?

    I wouldn't have done it myself, but

    This is going to be a cool thread to watch.

  9. #9
    VANZEN
    Guest

    bites what ?

    Quote Originally Posted by lkchris View Post
    Another innocent Airhead bites the dust.

    Makes the remaining intact ones more valuable, I suppose.
    actually, the R80GS frame was a salvage.
    as are MOST parts used in this project ÔÇô recycled!

    ... and don't think that the R68 sitting in my living room is anything but bone-stock! LOL.

  10. #10
    VANZEN
    Guest

    another K100, R100GS, & R100R bite the dust

    Quote Originally Posted by DADODIRT View Post
    What do you have in mind for the front suspension?
    a Marzocchi set salvaged from a K100, of course.
    wheels will be tubeless BMW hubs e-bay-salvaged from a GS and an R100R... (this IS fun!) laced to more appropriately sized rims. the rear hub is from a Paralever ekwipt GS and will be machined to fit the Mono final drive.

  11. #11
    Has the GS-Lust The_Veg's Avatar
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    Interesting about the salvaged frame.

    So with a new frame being made out of the old one, will you get to title it as a new bike? That would be pretty cool- you could (in certain states) assign a VIN of your own creation, and legally name the make/model whatever you wanted to.

    You could have a lot of fun with that.
    2012 R1200GS

    "If you can't fix it with a hammer, it's electrical." -somebody's dad

  12. #12
    VANZEN
    Guest

    note marking on swing arm:

    note marking on swing arm, "92 R100RS":



    one more bite for the R-evolution.

    resulting geometry:
    "I assembled the front end and wheels. The steering head angle is 26.5 degrees with the bike sitting on the bare wheels and the forks slid up in the triple trees 1 inch. With tires it should be about the same or slightly less (26 deg). The trail figures out to 3.96" at 27 deg and 3.69 inches at 26 deg so we are right in the ball park." – Randy Illg

    On matching wheel centerline and frame centerline – relating to why BMWs like to drift to the right, and this one won't:
    "The engine sits about 1degree offset from true centerline (it points slightly to the left when looking down). This brings the thrust lines of the engine in line with the driveshaft centerline. The rear wheel is on centerline and the swing arm must be all the way to the right. It all works with no binding." – Randy
    Last edited by vanzen; 12-20-2007 at 06:37 AM. Reason: add

  13. #13
    Sparkle-farkle-butt
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    Quote Originally Posted by crazydrummerdude View Post
    Do you ever have positive input?

    I wouldn't have done it myself, but

    This is going to be a cool thread to watch.

    No kidding, crazydrumerdude. Mein Gott!



    On the reals, that's a fantastic re-cycling (Har! I yam FUNNY! Har!) of old technology. I can't wait to see more!

    Now maybe he could tag-team with floridaroadkill..

  14. #14
    Rally Rat
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    Old Cro

    Have you tried getting the motor and gearbox out since buiding the frame?

  15. #15
    VANZEN
    Guest

    good question

    Quote Originally Posted by lostboy View Post
    Have you tried getting the motor and gearbox out since buiding the frame?
    simple answer: No...
    The eng/trans won't need to come out until the basic main-frame fabrication is complete. What you don't see yet, and what happens next, is that the right lower rail (yes, just one) will be 'cut out' and made to be removeable to allow that task.

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