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Thread: Traffic-light weight switches?

  1. #16
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    6th February 2006 - 21:45
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    Quote Originally Posted by Scubbo View Post
    mate if you have an old dead PC hard-drive pull it apart and take the 2 strong rare earth magnets out of it / stick to bottom of frame of bike, no need to glue etc, they are strong as feck don't get your fingers inbetween 2 of them -- should do the trick and cost you nothing...
    Have you got something that will turn the lights green as I approach them?

  2. #17
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    Quote Originally Posted by Scubbo View Post
    mate if you have an old dead PC hard-drive pull it apart and take the 2 strong rare earth magnets out of it / stick to bottom of frame of bike, no need to glue etc, they are strong as feck don't get your fingers inbetween 2 of them -- should do the trick and cost you nothing...
    Not how inductance works (see superposition), but I guess it might catch a few bolts that would otherwise fall off

    Quote Originally Posted by local View Post
    Have you got something that will turn the lights green as I approach them?
    Marker with green paint balls?
    "A shark on whiskey is mighty risky, but a shark on beer is a beer engineer" - Tad Ghostal

  3. #18
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    a strict diet of lots of Pies and no exercise will sort this issue in no time.

    I never have a problem with lights on the 'bus.
    Physics; Thou art a cruel, heartless Bitch-of-a-Mistress

  4. #19
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    Just wait for a gap and gun it

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  5. #20
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    26th September 2006 - 16:33
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    The use of the sidestand will only be effective if the sidestand is steel. Aluminium is not an 'inductible' metal. I suggest fixing a steel plate on the foot of the stand, or a larger one under the bike. Bear in mind most of a modern bike is aluminium and there might not be enough steel on it to trigger the switch.
    "Statistics are used as a drunk uses lampposts - for support, not illumination."

  6. #21
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    Quote Originally Posted by bogan View Post
    Not how inductance works (see superposition), but I guess it might catch a few bolts that would otherwise fall off



    Marker with green paint balls?

    "My understanding is that there's a loop of wire embedded in the pavement that produces a magnetic field around it when a
    electric currentpasses through it. When a large piece of magnetic material such as iron in a car's engine blockor frame parks overhead, the magnetic field is distorted and the traffic lightcircuit is tripped. "

    so a magnet won't change that induced field at all?....

  7. #22
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    Quote Originally Posted by iYRe View Post
    They are supposed to trigger if even a bicycle stops on them (most do). If you find some that dont work, report them to the council and they come and re-calibrate them. They seem to be relatively quick at doing it... I've reported several now.

    (at least in auckland anyway)
    That's how it works on this part of the world too. Stop right over the cut in the pavement. Even a bicycle can trigger it if the sensitivity is correct. If not working, report it.

  8. #23
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    Huh

    Quote Originally Posted by mada View Post
    Turn bike off. Push bike along pedestrian crossing to side with green light. Start bike, wave to cagers behind you - ride away.
    You have to be kidding me , what twat would do that.
    Just ride through the red light when all is clear, its not the bikes fault, its the bloody stupid sensors.

  9. #24
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    Quote Originally Posted by rocketman1 View Post
    You have to be kidding me , what twat would do that.
    Just ride through the red light when all is clear, its not the bikes fault, its the bloody stupid sensors.
    Ohhh, look out cass bitch did that and got a ticket, long time ago though, just goes to show hasn't learn't, don't do dumb shit in front of the law!
    It is a dumb law and like all dumb laws it SHOULD be ignored.
    Every day above ground is a good day!:

  10. #25
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    Quote Originally Posted by Scubbo View Post

    "My understanding is that there's a loop of wire embedded in the pavement that produces a magnetic field around it when a
    electric currentpasses through it. When a large piece of magnetic material such as iron in a car's engine blockor frame parks overhead, the magnetic field is distorted and the traffic lightcircuit is tripped. "

    so a magnet won't change that induced field at all?....
    It's an inductor, and it's the change in inductance that is measured. It will create a magnetic feild during this measuring, but it follows the law of superposition, the fields simply overlap, inductance is not changed by a fixed magnetic feild. Even changing feilds technically don't change the inductance, however they can induce currents within it to give false signals.
    "A shark on whiskey is mighty risky, but a shark on beer is a beer engineer" - Tad Ghostal

  11. #26
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    This is quite good:

    http://www.marshproducts.com/pdf/Ind...Write%20up.pdf

    No scary maths or names you've forgotten from highschool.

  12. #27
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    Quote Originally Posted by Dave- View Post
    This is quite good:

    http://www.marshproducts.com/pdf/Ind...Write%20up.pdf

    No scary maths or names you've forgotten from highschool.
    It is a good reference. I see someone's already mentioned about calling the council, they're usually pretty good at sorting them out, but you do have to call them.

    In the meantime I can report that if you lay the bike on it's side over the middle of the loop it usually does the trick. Dirt bikes suffer because of their ground clearance, and that's how I used to fix the problem.

    Probably not the very best trick if you have a Goldwing, but it's not likely to be a problem with a Goldwing.
    Go soothingly on the grease mud, as there lurks the skid demon

  13. #28
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    Quote Originally Posted by rocketman1 View Post
    You have to be kidding me , what twat would do that.
    Just ride through the red light when all is clear, its not the bikes fault, its the bloody stupid sensors.
    Council are putting red light cameras all over the place here so go for it if you got a large wallet. With our traffic, road works, and in some areas traffic lights every 200m I'd rather save 10mins by a lil push every now and then

  14. #29
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    Quote Originally Posted by caseye View Post
    Ohhh, look out cass bitch did that and got a ticket, long time ago though, just goes to show hasn't learn't, don't do dumb shit in front of the law!
    It is a dumb law and like all dumb laws it SHOULD be ignored.
    Stopping at red lights is a dumb law?

  15. #30
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    26th May 2015 - 21:48
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    I wear steel toe cap workbooks and never have a problem activating the sensor.

    In trainers though, I just have to chuck the side stand down sometimes.

    To be honest though, there are hardly any red light cameras about - I might have been known to treat red lights as a give way after 11pm


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