Chain drive airhead.

Discussion in 'Airheads' started by Stagehand, Mar 27, 2012.

  1. crazydrummerdude

    crazydrummerdude Wacky Bongo Boy

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    I just want to know what that valve cover brace thing is.
    #21
  2. hardwaregrrl

    hardwaregrrl ignore list

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    Probably a good reason for that!:D
    #22
  3. danedg

    danedg Horizontally Opposed

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    #23
  4. Infracaninophile

    Infracaninophile Finding My Way..

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    Wow. I'd like to know what the spring clip cotter pin is holding. Just above the lower triple clamp on the left side of the bike I see a spring clip (cotter pin) holding what appears to be a small box? Could it be a transponder for racing? Or? Never seen something like that.

    The other weird item is that strut brace out to the left head. What does that do?

    Tom
    #24
  5. Stagehand

    Stagehand Imperfectionist

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    I would totally take it for a spin.
    #25
  6. igormortis

    igormortis Cafe Reise

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    Those Wasps are cool! But I’ll trump you for crazy...

    [​IMG]
    #26
  7. Boxer Metal

    Boxer Metal Mad Scientist

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    They were actually the most competitive racing sidecars worldwide.
    #27
  8. Bill Harris

    Bill Harris Confirmed Curmudgeon

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    Ah, that is elegant. And the layshaft is concentric with the swingarm "shaft". Neat.
    #28
  9. Beater

    Beater The Bavarian Butcher

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    It obviously just needs a new battery. It's always the battery.
    #29
  10. Stagehand

    Stagehand Imperfectionist

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    Im basing that of course on nothing than a vague idea of how I'd start thinking about it. :freaky

    Probably runs better than mine, right now :lol3


    AND if anything near a stock clutch will work in that than obviously I could run about in third gear all day long, no problems :rofl
    #30
  11. bikerfish

    bikerfish flyfishandride

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    my guess, since it's a race hack, the brace from the frame to valve cover is to keep the riders leg from knocking off the carb as he climbs all over the thing, hey, it's just a guess!
    wonder if the sidecar wheel is powered. that might explain the chain drive in the first place.
    #31
  12. caponerd

    caponerd Kickstart Enthusiast

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    My thought exactly.

    Douglas made horizontally opposed twin bikes with chain drive. (england-kev features some in his 2012 picture thread)

    Nothing weird about it really. The drive has to make a 90 degree turn somewhere, be it at the end of a driveshaft at the wheel, or at the beginning of a chain at the transmission.
    Given the reputation of those paralever rear ends as a "maintenance" replacement item, there's something to be said for a chain drive.
    #32
  13. Bill Harris

    Bill Harris Confirmed Curmudgeon

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    Makes perfect sense to me-- you'll need to design or adapt a right-angle drive and it'd be easier to adapt. Use a splined wheel cup on the layshaft to mate with the output splines on the FD.

    Hmmm. I'm inspired. Wonder if there are any plans/drawings on the 'Net? Seriously.




    EDIT: Googling "Wasp racing hack" fizzled-- more hits on a vid game. Alternate search names?

    "Wasp bmw sidecar" dribbles in a lot of minor hits, but thus is progress.

    "Wasp bmw sidecar" with Google Images looks fruitful.
    #33
  14. jbcaddy

    jbcaddy Long timer

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    years ago at Carnigie park in Calif. I saw several teams from europe totally destroy the US hack riders. The Wasp hacks were jumping 4-5 times further than the US riders. One Wasp had a 750 Honda 4 in it, the other had a Norton twin. they were taking the jumps like the solo riders were. I was amazed at thier speed.
    #34
  15. jbcaddy

    jbcaddy Long timer

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    #35
  16. Padmei

    Padmei enamoured

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    I think it's awesome:clap
    A while ago I was asking about fitting a chain drive to a airhead. I was guided to an image of a race/track bike. The gearing was easy to change on the sprockets, dunno about braking thru the chain tho,


    I'd love to take it for a blast:D
    #36