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Thread: Old multi-cylinder bikes of the 50s to later on. Japanese, British, Euro, etc

  1. #31
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    I seen this today beautiful.1963 RM63 50cc apologies for blowing it up a bit
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  2. #32
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    Quote Originally Posted by husaberg View Post
    I seen this today beautiful.1963 RM63 50cc apologies for blowing it up a bit
    Thats cool !

    How about 90cc pre AG100 GP bike?



    http://rmdmotors.com/1974-yamaha-fac...oad-racer-ht1/

    I have a HT1 as the spare shitter bucket, not quite a yamaha factory model tho.............................


    Some cool classic race bikes pics on this site

    http://www.lump-proof.com/CLASSIC/RACE/96/RACE96.html
    Dale Kerrigan: If there's anything Dad loved more than serenity, it was a big two stroke engine on full throttle!

  3. #33
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    Quote Originally Posted by RDjase View Post
    Thats cool !

    How about 90cc pre AG100 GP bike?



    http://rmdmotors.com/1974-yamaha-fac...oad-racer-ht1/

    I have a HT1 as the spare shitter bucket, not quite a yamaha factory model tho.............................


    Some cool classic race bikes pics on this site

    http://www.lump-proof.com/CLASSIC/RACE/96/RACE96.html
    Great stuff i have a lot of stuff left to scan
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  4. #34
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    Quote Originally Posted by husaberg View Post
    I seen this today beautiful.1963 RM63 50cc apologies for blowing it up a bit
    RK66 50cc Grand Prix and you relise its a twin? I have one... Rotary valve setup that Rotax has since employed brilliantly. This 1/9 Protar copies the 1966 model that Hans Georg Anscheidt rode to world champion finishes three years in a row. 16 hp @ 18,000, water-cooled and 170km per hour.

    Click image for larger version. 

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    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    cheers DD
    (Definately Dodgy)



  5. #35
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    Quote Originally Posted by dangerous View Post
    RK66 50cc Grand Prix and you relise its a twin? I have one... Rotary valve setup that Rotax has since employed brilliantly. This 1/9 Protar copies the 1966 model that Hans Georg Anscheidt rode to world champion finishes three years in a row. 16 hp @ 18,000, water-cooled and 170km per hour.

    Click image for larger version. 

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    Quote Originally Posted by husaberg View Post
    I was meaning a write up rather than a write off....

    Posted ages on the ESE thread..
    kind of............beautiful its back a page...

    Here is some more stuff from the ESE thread incase you missed it as well.
    Hopefull Chrisc may scan the pages sometime??????

    Quote Originally Posted by husaberg View Post
    Last thing you want to do is encourage an anorak.
    Yes a few more left.
    Including a very interesting gearbox configuration on a works Kreidler 50cc.
    The suzuki 50cc here has an Alloy frame (always wondered why Suzuki's welding was so chunky)
    Updraft on the carbs and also note the shape of the crank-wheels.
    I have always thought the 60's Suzuki's were functionally pretty.
    oh yeah the carbs in thew last 50cc twin nearly bigger than what you are allowed on the Air cooled 125 Rob.
    In fairness your power spread is a little wider though
    Quote Originally Posted by chrisc View Post
    I saw this in the August 2012 issue of Classic Bikes, page 65 if anyone wants to check it out for a similar read

    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  6. #36
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    whats the advantage(or reason) for the remotley mounted float chambers for teh carbs

  7. #37
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    Quote Originally Posted by BMWST? View Post
    whats the advantage(or reason) for the remotley mounted float chambers for teh carbs
    That way they can be mounted on any angle down draft/up draft they can also be mounted with shorter intake in some instances.
    They do have problems of course like leaning or enriching when leaned over if mounted conventionally. they used to get around that with twin floats. not a problem with the side sucker mid you.They are also more expensive to make.
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  8. #38
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    Seen this today


    Suzuki RS67 1967
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  9. #39
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    Quote Originally Posted by husaberg View Post
    Seen this today
    cool... 350Hp per liter
    Suzuki RS67 1967
    February 1967 - August 1967
    Engine type: Water-cooled 125 cc square-four 2-stroke.
    Bore x Stroke: 35.5 x 31.5 mm
    Compression ratio: 8.4
    Carburetor: VM24
    42 hp / 16,500 rpm (350 bhp per liter), 145 mph.
    Transmission: 12 speed
    cheers DD
    (Definately Dodgy)



  10. #40
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    look at the dopey swingarm angle. Surely they were supremely clever engineers but they just didn't care a jot for handling.
    Don't you look at my accountant.
    He's the only one I've got.

  11. #41
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    Quote Originally Posted by F5 Dave View Post
    look at the dopey swingarm angle. Surely they were supremely clever engineers but they just didn't care a jot for handling.
    I wonder if it was didn't care...or were yet to understand?

  12. #42
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    Quote Originally Posted by husaberg View Post
    Seen this today
    The actual bike or just the photo online?

    Because I would LOVE to see this in the flesh. I have a real soft spot for early 50cc racers

  13. #43
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    Quote Originally Posted by F5 Dave View Post
    look at the dopey swingarm angle. Surely they were supremely clever engineers but they just didn't care a jot for handling.
    Quote Originally Posted by Crasherfromwayback View Post
    I wonder if it was didn't care...or were yet to understand?
    I vote "yet to understand" my 77MT replica has a similer angle, shit it was 44 years ago. Click image for larger version. 

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    cheers DD
    (Definately Dodgy)



  14. #44
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    Quote Originally Posted by F5 Dave View Post
    look at the dopey swingarm angle. Surely they were supremely clever engineers but they just didn't care a jot for handling.

    Please elaborate. Swingarm seems to be pointing only slightly above the sprocket centre as far as I can see. With rider sag it'd prolly be dead straight between the three points.

    The wheel base would change more, but the further the distance between wheels on something that flimsy would not bother me at all. Would slow the wallow down at least.

  15. #45
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