PICTURES of BIKE'S .....

Discussion in 'Australia' started by OldOzy, Jul 8, 2009.

  1. gavo

    gavo Slacker

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    A

    And if you think about it the pivot point is the tyres with the road so the further any weight is from that point the greater effect it will have and a bigger problem when moving one way to the other.I think you'll find on modern sports bikes it's about keeping the wheelbase short as well.
  2. BergDonk

    BergDonk Old Enough to Know Better

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    Except the pivot point is not the tyres, its the roll centre of the bike. I can't find a pic atm, but try this. Visualise a MotoGP bike at full lean around a 90 deg or so corner. as it exits the tyres come out to the edge of the track. As the bike then stands up the tyres come back in from the edge of the track and back under the bike is it returns to vertical. The pivot point was ideally about where the crank is. Notice how high cranks are in modern sport bikes. The tyres marks form a short 'S' bend as the bike goes vertical and the tyres are no longer at the edge of the track.
  3. ozzyal

    ozzyal Been here awhile

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    Makes you wonder why BMW didn't persist with the original flying bricks K100 .
    I had a K100RS very early on in my riding life , but I was very inexperienced rider then and couldn't really comment whether it was a great handling machine .
    I thought it was great , but like I say , I wouldn't have known
  4. Gazman

    Gazman Zen equals camping

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    E67B63E5-D8B5-4E21-886C-30EDF363A551.jpeg
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  5. gavo

    gavo Slacker

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    The tyres do not move across the track to back under the bike the bike pivots from the point it contacts the ground. It's a simple lever.
  6. troy safari carpente

    troy safari carpente Team f5oolery

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    Motorcycle lean angle - relative to GOG and centrifugal force - in a turn.

    [​IMG]

    The eleven degrees of freedom (relative to motion) of a motorcycle.

    [​IMG]
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  7. Just Dan

    Just Dan Bugger, Burnt toast

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    Build it, oh yeah.

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  8. Russ

    Russ Long timer

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    I'm still sipping the Kool aid :norton my new butt jewellery

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  9. Frapple

    Frapple Been here awhile

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    Think about going along a straight bit of road and doing a bit of slalom . Like we all have done . The bike and rider don't flip flop from the point of contact(road) , the tires move to the left and right of the roll center . The rider remains relatively central . . Think what happens when you counter steer . You are steering the tyres to a point outside the centre of gravity . So the tyres actually move out ......Relatively..

    Does anyone know where I can get a DR-ZV650??
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  10. braaap!

    braaap! Long timer Supporter

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    ^ DR-ZV650... go have a talk to Pezz :)
    A mate had an SV650 which I got to ride once down along the GOR. Magic smooth and more than enough to lose one's licence... Now the SV1000 engine, same as that in the Cagiva Raptor 1000, that would peel some knobs! But that would be silly.

    The Suzi 650 motor is an absolute peach, simple and perky! Shoe-horned into a suitable offroad chassis with good suspension, decent fuel tank and ergos... that thing would be fantastical!


    Wonder if it might fit into a KTM 640 Adv chassis... :hmmmmm
  11. WILL_S

    WILL_S OUTLAW POSTIE 001

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    Why do that
    They rip in the stocko chassis er with a few mods
    @DRjoe Got to get it painted
    FB_IMG_1549006936785.jpg

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  12. troy safari carpente

    troy safari carpente Team f5oolery

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    And hell yeah - build it - oh yeah... :clap

    First reaction... wow! second reaction... just needs some engine protection for the exhaust and oil filter dangling down there... and a couple low slung/slim rally inspired fuel tanks (replace the radiator shrouds) for the ever-present "fuel range" that everyone decrees an "adventure bike" must have... in any case - I for one would buy THAT :clap (even as it was). YES YES and hell YES.

    But why oh why (does the doomsday angel on my shoulder keep reminding me) that this "concept" (like all of the Honda, KTM, and Yamaha photoshop "design concept" unicorns we've seen in so many magazine and web editorials in recent years) always end up 50 kg's heavier, 8000 Oprah Winfrey calories chunkier, and four suspension evolutionary points softer... than the "concept" dream bikes that grace the glossy pages, like this one?.

    "Why oh why photoshop designers and magazine editorialists... do you taunt us so...!?" :brow :nod

    [​IMG]
  13. badmanners

    badmanners Umm, yeah, no.

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    Got a picture of the old one Russ? :muutt

    Cheers, badmanners.

    P.S. Hope your going OK. :thumbup
  14. Russ

    Russ Long timer

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    Thanks, going good mate, the old one has a few scuffs that would not buff out :lol3 so a new one was in order.
    let's go for a ride soon I missed you last weekend.
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  15. Just Dan

    Just Dan Bugger, Burnt toast

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    The DRZ is a photoshop. Of what could be possible. Still looks good
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  16. BergDonk

    BergDonk Old Enough to Know Better

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    @Frapple nails it, but in the meantime, lets agree to disagree then, and move on to the next picture of a bike...
  17. gavo

    gavo Slacker

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    I understand what you mean I just don't agree
  18. Frapple

    Frapple Been here awhile

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    Exactly! Example the T7 .
    The concept bike ." Where do I sign" .
    Pre prod ." Well . Might be ok" .
    Production version . "We all know where it is going to end up"
    I'll keep working on My Nuda .
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  19. Frapple

    Frapple Been here awhile

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    The tires are 'a' pivot point when changing direction ie. from a left hander to a right hander , as the COG moves across , but not the only pivot point . When the motorcycle is not moving tyres are the only pivot point .
    Now can we have another look at the DRZ V650
  20. Redback

    Redback Average aussie bloke

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    Nice:nod
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