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Thread: 1/4 Mile Sprints

  1. #16
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    Quote Originally Posted by Sparky Bills
    Good to hear you all had fun,
    Yeah I was going to go, and NO I did not sleep till 12! By the time I helped clean up after the party, It was going to be too late to get over there. BUGGER!!
    We will be organising a MotoMart ride for early Dec.
    Has always had a good turn out. Prob same as last year. Will keep you all posted
    May I come along too please?

    I picked my bike up from Motomart, if that helps.
    If a man is alone in the woods and there isn't a woke Hollywood around to call him racist, is he still white?



  2. #17
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    Quote Originally Posted by Sparky Bills
    We will be organising a MotoMart ride for early Dec.
    I suppose given all of the nice things I have to say about Motomart I had better make other plans...
    "Standing on your mother's corpse you told me that you'd wait forever." [Bryan Adams: Summer of 69]

  3. #18
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    4th November 2003 - 00:41
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    Quote Originally Posted by Hitcher
    That would be centrifugal force. Centripetal force is the opposite effect that forces things towards the centre or axis.
    Centrifugal force is a myth, I remember back from my days of rotational physics.
    I'll see if I can dig out my old text books so I can explain why it's a myth.

  4. #19
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    Quote Originally Posted by Slingshot
    I think the general rule is the larger the rolling diameter of the tyre, the faster the speedo will read.
    No the larger the the tyre becomes, the lower speed your speedo will read (for a given speed). Also depends on whether the speedo is front or rear wheel driven.

    For some reason most bikes speedos are horribly inaccurate above 200kph by about 50kph. Tyre flex isn't to blame as you are talking about a 20% error which means a tyre would have to grow/shrink about 12cm in diameter. When people tell me they were doing 290kph the other day and I know that model is only good for 260kph, I do a mental calculation and go "so that actually means 240 REAL kph" but just keep it to myself

  5. #20
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    Quote Originally Posted by Slingshot
    Centrifugal force is a myth, I remember back from my days of rotational physics.
    I'll see if I can dig out my old text books so I can explain why it's a myth.
    I'm sure all riders who have highsided would be fascinated to learn that centrifugal force is a myth...

    However your are right in your assertion. Centrifugal force does not exist. Nevertheless, it appears real to the object being rotated. This is because the object believes that it is in a non-accelerating situation, when it is not. For instance, a child on a merry-go-round is not experiencing any real force outward, but they must exert a force inwards to keep from flying off the merry-go-round. Since the centrifugal force appears so real, it is often very useful to use as if it were real. The more massive the object, the greater the force. This is true because an adult will have a harder time staying on a merry-go-round than will a child. The greater the speed of the object, the greater the force. This is true because a merry-go-round is harder to stay on, the faster it is pushed. The less distance from the centre, the greater the force. This is perhaps the trickiest relationship, for it is much harder to stay near the middle of the merry-go-round than the edge of the merry-go-round.
    "Standing on your mother's corpse you told me that you'd wait forever." [Bryan Adams: Summer of 69]

  6. #21
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    Quote Originally Posted by Hitcher
    ...
    ...

    ...

    ...
    kiwibiker is full of love, an disrespect.
    - mikey

  7. #22
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    Quote Originally Posted by Hoon
    No the larger the the tyre becomes, the lower speed your speedo will read (for a given speed). Also depends on whether the speedo is front or rear wheel driven.

    For some reason most bikes speedos are horribly inaccurate above 200kph by about 50kph. Tyre flex isn't to blame as you are talking about a 20% error which means a tyre would have to grow about 12cm in diameter. When people tell me they were doing 290kph the other day and I know that model is only good for 260kph, I do a mental calculation and go "so that actually means 240 REAL kph" but just keep it to myself
    The only bike I've owned with a reasonably accurate speedo was my RC30. Indicated 275=260 on a radar gun.

    I never want to go that fast again. I sat up at 200km/hr because it felt slow. My arms grew about 6cm, and I bruised my tail bone on the seat hump.

    Sorry about being the old fart going on about the glory days.

    Sigh.

    Sad old git ...
    If a man is alone in the woods and there isn't a woke Hollywood around to call him racist, is he still white?



  8. #23
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    Quote Originally Posted by Hitcher
    This is perhaps the trickiest relationship, for it is much harder to stay near the middle of the merry-go-round than the edge of the merry-go-round.
    The coolest merry go round I've ever seen was the one Above-Bar in Southampton. As we got closer to the amusement rides, I could hear the unmistakable sound of a Chevy small-block V8 turning at about 5000rpm.

    The merry go round was 4 rides deep, and populated by white faced small children clinging on for grim death to various horses and unicorns, and by Grannies sagging at the knees with cheeks stretched flat over facial bones and teeth bared, just like all those comedy centrifuge gags.

    There was a perceptible breeeze coming off the merry go round some 20 metres away, and the open pipes of that Chevy V8 drowned out the cheesy music wonderfully.

    The wife and I had many hours of sublime entertainment listening to the "Dopplered" screams of terrified toddlers.

    Marvellous.
    If a man is alone in the woods and there isn't a woke Hollywood around to call him racist, is he still white?



  9. #24
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    Dont care

    Quote Originally Posted by Hitcher
    I suppose given all of the nice things I have to say about Motomart I had better make other plans...
    Mate..
    I dont really care.
    A ride is a ride! Come along!
    If you really feel that badly towards us, then so be it. But really.. I would'nt mind at all.

  10. #25
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  11. #26
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    haha

    Bring it on Motoxxx!!
    Check out the events!! The ride info is posted up there!

  12. #27
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    Quote Originally Posted by Sparky Bills
    Bring it on Motoxxx!!
    Check out the events!! The ride info is posted up there!
    I know where Hitcher is coming from.

    I couldn't get service there even though I had picked out a bike, Helmet, Boots, and Gloves. I asked and asked for help, and no one actually spoke to me except to say that someone would be with me in a minute. After an hour I flagged it.

    What kind of business gives up 10 grand worth of business?

    The very TRX I'd been looking at ended up at Bay City Motorcycles and I bought it from them, for a great price, and I had excellent service from them too.
    If a man is alone in the woods and there isn't a woke Hollywood around to call him racist, is he still white?



  13. #28
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    Quote Originally Posted by Hoon
    No the larger the the tyre becomes, the lower speed your speedo will read (for a given speed). Also depends on whether the speedo is front or rear wheel driven.

    For some reason most bikes speedos are horribly inaccurate above 200kph by about 50kph. Tyre flex isn't to blame as you are talking about a 20% error which means a tyre would have to grow/shrink about 12cm in diameter. When people tell me they were doing 290kph the other day and I know that model is only good for 260kph, I do a mental calculation and go "so that actually means 240 REAL kph" but just keep it to myself
    Where did you get this info from? I have seen numerous tests where indicated is, for example, 274km/h and real has been 271km/h. Hardly a 50km/h difference. Check most good mags, they will show indicated to real speed comparisons, and I bet you you'll never find a 50km/h difference. I'd be sending my bike back to the factory if that was the case.

  14. #29
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    Now Now

    I dont want to get into all that again!
    Cant we all just get along
    Just come to the ride, and we can all have a good time!

  15. #30
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    I can understand your sentiments Sparky Bills, but I'm not having a go at Hoon, just asking where he got his info from. Anyway, you don't have to get involved if you don't want to.

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