MOT time - notching

Discussion in 'UK Motorcycles' started by cat, Nov 24, 2009.

  1. cat

    cat Guest

    Neither approach sound like 'things I want have a go at' :/
     
    cat, Nov 24, 2009
    #21
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  2. cat

    Pip Luscher Guest

    Well, you could beg/borrow a steering damper that might hide the
    symptoms, I suppose. Bike's handling might get... interesting, though.
     
    Pip Luscher, Nov 24, 2009
    #22
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  3. I had them done by a dealer on my GT750, some years back, because yes,
    you really needed the special tool.
     
    The Older Gentleman, Nov 24, 2009
    #23
  4. cat

    'Hog Guest

    An internal bearing puller can be hired for those blind recessed
    bastards.
     
    'Hog, Nov 24, 2009
    #24
  5. I've got an array of gigantic socket heads and a few old fork tubes
    which I've saved for this job.
     
    The Older Gentleman, Nov 24, 2009
    #25
  6. # Un chinito pescando...
     
    Paul Carmichael, Nov 24, 2009
    #26
  7. cat

    Colin Irvine Guest

    Only if your insurance policy specifically says so. I've yet to come
    across one that does.
     
    Colin Irvine, Nov 24, 2009
    #27
  8. cat

    Colin Irvine Guest

    Colin Irvine, Nov 24, 2009
    #28
  9. Using the patented Mavis Beacon "Hunt&Peck" Technique, Colin Irvine
    Look, this is very, very easily answered.

    Many hundreds / thousands of people drive non-MOTd vehicles every year.

    Anyone who claims that this invalidates their insurance has only to
    point to one, just *one* example of anyone, ever, in any UK court, being
    convicted of being uninsured because their otherwise-valid insurance
    policy was inoperative just because the vehicle was not MOTd.

    There.

    Discussion ended.
     
    Wicked Uncle Nigel, Nov 24, 2009
    #29
  10. cat

    Pip Luscher Guest

    Silly thought: it's definitely the head races and not a cable or
    something fouling? How are you actually testing it? I couldn't really
    feel the new Guzzi's head race problem *except* when I rode it or had
    the front tyre on a very low friction surface - the front tyre had too
    much grip.

    It could also just be corrosion if the grease was a bit thin when it
    left the factory.

    The important race is the bottom one: that's the one that bears the
    bike's weight. You might get away with propping the front of the bike
    off the ground, dropping the bottom yoke and cleaning the outer races
    and greasing them well.
     
    Pip Luscher, Nov 25, 2009
    #30
  11. cat

    cat Guest

    I got a friend to hold the back down with the bike on the center stand.
    then used my fingers on the bar end to move the bars from one extreme to
    the other. It has that slight desire to pause when the bars are dead
    ahead. It's reminiscent of pan pots on a stereo with a center locator.

    How long do races last? These were last changed 3 years ago, but I have
    ridden up a couple of curbs :/

    I'll check all the cabling when I get to work.
     
    cat, Nov 26, 2009
    #31
  12. cat

    boots Guest

    You may get away with slackening off and retightening, that's what I
    did on my fazer. It went through another couple of MOT after that
    before being terminally retired.
     
    boots, Nov 26, 2009
    #32
  13. cat

    Pip Luscher Guest

    Sounds about right, however, with the front wheel in the air, the
    fromt end will be hanging off the top race and that one doesn't
    usually get notched. Maybe the races are done up very tight? Allowing
    for the effects of wiring looms, fairing gaiters etc. and with the
    front wheel off the ground, my rule of thumb is that the steering
    should be able to flop under its own weight when pushed over to one
    side.
    3 years and how many miles? Doesn't sound long enough to wear them out
    but if the bike lives outside in all weathers then they could've
    rusted. I've had bikes at up to 50K miles on their original head
    races.

    Kerbs aren't usually a problem provided you don't hit them at speed or
    bottom the forks hard.
     
    Pip Luscher, Nov 26, 2009
    #33
  14. cat

    Pip Luscher Guest

    You know full well what I meant.

    You're right in one sense of course: properly adjusted head races are
    always in compression, so the bottom race will also be pulled upwards
    even when the front wheel is off the ground.

    As I'm sure you also know well, it's the bottom race that's most
    likely to get hammered in a kerbing/pothole/bad wheelie landing. It's
    easier to detect notching on these when the weight of the bike is on
    the bearing, hence the various low-friction platforms to support the
    front wheel that are advocated by various people.
    Well duh.

    Though to be strictly accurate, not all bike service manuals actually
    specify a torque.

    My R1 (or could've been my FZR; I forget) HBoL specified an initial
    torque to take up slack followed by a final torque as you say.

    The genuine Suzuki TLR workshop manual specifies using a spring
    balance hooked onto the handlebar end to measure the amount of torque
    needed to turn the steering: damper disconnected of course and I think
    they specify 'from the mid position' or something like that.

    The Guzzi factory manuals I've dealt with barely mention adjustment
    and don't specify a torque. ISTR there was something vague along the
    lines of 'tight enough but not too tight' in one but I couldn't find
    it just now when I looked.

    Am I lecturing you? Yes, butI didn't think I could let this go. :)
     
    Pip Luscher, Nov 27, 2009
    #34
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