sacrilege of an "S", yet strangely find it cool

Discussion in 'Airheads' started by vernon dent, Feb 14, 2013.

  1. vernon dent

    vernon dent Been here awhile

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    apparently halfway to motorcycle hell
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    #1
  2. Rob Farmer

    Rob Farmer Long timer

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    I'm surprised how small the VW motor looks in the airhead frame.

    How well do you think it would go?
    #2
  3. driggles

    driggles Adventurer

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    It's an R1900S!
    #3
  4. craydds

    craydds Long timer

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    Rob, do you think the frame might have been "stretched" a few inches? Look at that gap between the seat and the tank. For the "go" factor - I'll bet it would have tons of TORQUE.
    #4
  5. disston

    disston ShadeTreeExpert

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    I bet handling would suck. Top speed might be impressive. Nice job on that one looks like. Pictures not very high resolution. Looks like a /2 trans and it's hooked up through an adapter plate of some kind. I understand that's how most were done. Was popular many years ago.
    #5
  6. craydds

    craydds Long timer

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    it has a KICK START! Give you a nickel if you can kick it over.
    #6
  7. ME 109

    ME 109 Long timer

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    I can see a frame mod near the gear shifter.
    The best thing I can see about this engine upgrade/downgrade is, wow! look at the oil filter!! Perfect.
    #7
  8. Boxer Metal

    Boxer Metal Mad Scientist

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    Love it. I'm surprised that it was not upgraded to a 5 speed when they took the motor and transmission out of the /2 frame.
    #8
  9. Rob Farmer

    Rob Farmer Long timer

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    I missed that and the lower tubes completely. Too busy looking at the engine. I'd love to try something like that out.

    I remember the Amazon machines with VW engines and assumed any machine with one would be enormous

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    #9
  10. Prmurat

    Prmurat Long timer

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    this so cool... I've been dreaming of a bike like this..not the usual /2 with a VW!!!:clap:clap
    #10
  11. disston

    disston ShadeTreeExpert

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    Where do you see an oil filter? I worked on the older VWs back in the day. They had no oil filter just like the /2s. It may have been added to later models or I believe there was an after market add on type filter but I never had one.

    Starter and flywheel would be VW. The clutch pack mostly VW but either the /2 clutch disk or a custom disk to drive the /2 trans.

    There was one of these bell housing adapter plates for sale only last year on FleaBay. I don't remember what it sold for.

    I'm also not any kind of an expert on building one of these. Most of what I posted here is guesses about how it's done. Some of my guesses may be wrong and there may be more to it than I see.

    These machines do exist but if you really want one I suggest buying one already built instead of tearing up a /2 bike to build this. I'm sure no mater what the condition of the /2 it is worth more as a BMW than as a VW.
    #11
  12. bikerfish

    bikerfish flyfishandride

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    looks good except for those aweful mufflers, a set of stock or regular aftermarket units would look much better.
    and put some bags on that thing, load it up, and hit the road, cause your not gonna be hurtin for power!
    #12
  13. ME 109

    ME 109 Long timer

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    Above the tranny. It looks like an oil filter.
    #13
  14. disston

    disston ShadeTreeExpert

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    You're right. That does look like an oil filter. :clap
    #14
  15. crazydrummerdude

    crazydrummerdude Wacky Bongo Boy

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    +1

    ..and a lot nicer than my own (barn find) BMVW.
    #15
  16. dbc254

    dbc254 V-Strom1000

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    I want one! Would the maintenance be cheaper/easier on a newb like me than a real-deal Beemer? 1900cc's sitting LOW in the frame like that. Outta handle well I'd think. CofG is down by your toesies. . .:cry
    #16
  17. supershaft

    supershaft because I can

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    I was around a number of them when I was a kid. No one I knew that had one had them geared tall enough for any high speed. That and/or they weren't willing to rev it enough? My shop landlord revs one of his 160hp 2.5 liter pushrod Porsche engines to 7k. It's geared for about 135mph. That would probably take taller gearing than a 2.91:1 FD? The clutch can't handle the torque. They handle like crap from what I can tell. What I don't know is how long the engine lasts without forced cooling. The back cylinders make a Harley's back cylinder look like it's out in the wind. I never new anyone back in the day that actually rode theirs much. Personally I have mostly thought they were taking what could be a good engine in something else and ruining a good bike to make them fit.
    #17
  18. roguetek

    roguetek Adventurer

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    nice, but that's not 1.9l... that's a 1200cc motor. at least, those are 1200cc singleport heads from a ( IIRC ) type one motor.
    #18
  19. robtg

    robtg Been here awhile

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    Take another look.
    #19
  20. homere

    homere Been here awhile

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    Nice fab job, wow lots of torque,How does it turn
    #20