12r forks

Discussion in 'UK Motorcycles' started by Nige, Apr 23, 2011.

  1. Nige

    Nige Guest

    Done & dusted, new seals & oil, setup for me, built back up all for £141,
    which i reckon is decent vfm. I didnt realise the £85 was for forks taken in
    off the bike, but no matter.

    He did raise one point, when he undid the yoke bolts the forks sprang into
    the correct position, he said nothing is damaged, just clamped up out of
    kilter a bit.

    That might explain, along with the fact there was not a lot of oil in one
    fork, the slightly odd front end feeling i had.

    Good shake down at Silverstone Monday, then new rubber....

    --


    Nige,

    'That's shot the fox'

    Eunos Roadster (for summer)
    Grand Cherokee (for winter)
     
    Nige, Apr 23, 2011
    #1
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  2. Reckoned the price sounded too good to be true!
     
    The Older Gentleman, Apr 23, 2011
    #2
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  3. Nige

    Steve Guest

    Hows that work then?
    Can't see how it's possible unless the yokes are out of alignment.
     
    Steve, Apr 23, 2011
    #3
  4. Nige

    Nige Guest

    hehe - to be fair, he spent ages with me on the bike sorting the front and
    back out too.

    He also reckons that 41psi is just way too high for a single rider &
    reckoned 34-36 is more realistic.

    He also said that one fork had nearly no oil in it & what was left in the
    other was manky as ****, coupled with the forks not sitting right in the
    yokes, it should feel bang on :)

    --


    Nige,

    'That's shot the fox'

    Eunos Roadster (for summer)
    Grand Cherokee (for winter)
     
    Nige, Apr 23, 2011
    #4
  5. Nige

    Nige Guest

    Easy done, front wheel rigid, you twist the bars slightly when doing up the
    nuts etc, or you whack the front wheel good and hard, can be done.

    slacken all your top yoke nuts & give it a wiggle, you'll see.

    --


    Nige,

    'That's shot the fox'

    Eunos Roadster (for summer)
    Grand Cherokee (for winter)
     
    Nige, Apr 23, 2011
    #5
  6. Nige

    Lozzo Guest

    For track maybe, but 34/36 is too low for road. That's the front tyre
    pressure on a 12R. 36/42 is about right for road - drop about 5psi for
    track, maybe 7 if it's a very hot day.

    --
    Lozzo
    Versys 650 Inter-Continental Hyperbolistic Missile , CBR600F-W racebike
    in the making, TS250C, RD400F (somewhere)
    BMW E46 318iSE (it's a car, not one of those 2-wheeled pieces of shite
    they churn out)
     
    Lozzo, Apr 23, 2011
    #6
  7. Nige

    Nige Guest

    Manual says 41/41 all conditions...

    --


    Nige,

    'That's shot the fox'

    Eunos Roadster (for summer)
    Grand Cherokee (for winter)
     
    Nige, Apr 23, 2011
    #7
  8. Nige

    Krusty Guest

    All tyres are not equal - check the tyre manufacturer's website for
    figures. And for Monday, ask the tyre guy there.
     
    Krusty, Apr 23, 2011
    #8
  9. Nige

    Nige Guest

    No, i know, cant wait to get this silly 200 section rear off. But not hedge
    first :)

    --


    Nige,

    'That's shot the fox'

    Eunos Roadster (for summer)
    Grand Cherokee (for winter)
     
    Nige, Apr 23, 2011
    #9
  10. Nige

    Beav Guest

    The front of the bike dive to the deck.
     
    Beav, Apr 23, 2011
    #10
  11. Nige

    Lozzo Guest

    Nige said top yoke bolts only, not all yoke bolts. It'll be fine. I
    have two bikes in my garage on their own wheels with no top yokes on
    them at all.


    --
    Lozzo
    Versys 650 Inter-Continental Hyperbolistic Missile , CBR600F-W racebike
    in the making, TS250C, RD400F (somewhere)
    BMW E46 318iSE (it's a car, not one of those 2-wheeled pieces of shite
    they churn out)
     
    Lozzo, Apr 23, 2011
    #11
  12. Nige

    Nige Guest

    Yep, it's dead easy to twist 'em slightly fucking the front end up good and
    proper.

    I blame zymurgy going through a barbed wire fence, they got a bit out of
    alignment & never got looked at until today :)

    I cant wait to give it some serious treatment :)


    --


    Nige,

    'That's shot the fox'

    Eunos Roadster (for summer)
    Grand Cherokee (for winter)
     
    Nige, Apr 23, 2011
    #12
  13. Nige

    Alex Ferrier Guest

    Sounds like bollocks, to me. You'd have to be deliberately trying to
    twist the bars with the front wheel held rigid. Whilst at the same time,
    tightening up the yoke clamp bolts. Even then, as you tightened up the
    clamp bolts the whole plot will attempt to self align naturally.
    If the bike has had a hard enough knock to set some tension up in
    the yokes, it's more likely that a stanchion/tube is fractionally bent.
    Just releasing the tension by either undoing the fork clamp bolts or the
    steering head clamp bolts will not sort it out. If anything it would could
    make the alignment worse.

    Slightly odd Handling
    Fork seals gone
    One leg missing almost all it's oil.
    Tension in the yokes when the clamp bolts were released.

    Sounds more like a mildly bent fork leg to me.
    Even if your mechanic says otherwise.
     
    Alex Ferrier, Apr 24, 2011
    #13
  14. Nige

    Lozzo Guest

    Forks twisted in the yokes is a very common thing. It happens quite
    frequently without bending either fork leg in the slightest. As Nige
    said, all that needs doing is loosening the top yoke, realigning the
    forks and then retightening everything. You'd be amazed at just how far
    out the forks can be without suffering any damage, and nor to the yokes
    either.

    I thought everyone who'd been riding a while knew this.

    --
    Lozzo
    Versys 650 Inter-Continental Hyperbolistic Missile , CBR600F-W racebike
    in the making, TS250C, RD400F (somewhere)
    BMW E46 318iSE (it's a car, not one of those 2-wheeled pieces of shite
    they churn out)
     
    Lozzo, Apr 24, 2011
    #14
  15. <AOL>
     
    The Older Gentleman, Apr 24, 2011
    #15
  16. Nige

    Krusty Guest

    Everyone who rides (& falls off) off-road certainly does. Finding a
    sold object to bash the front wheel against to straighten things up is
    just part of the fun.

    I mentioned here at the time about the Raptor's forks being slightly
    twisted when I got it, making the suspension very harsh. And WavyDavy's
    DRZ-E was so out of alignment when I rode it last year it was like
    steering around a mini roundabout whilst going in a straight line. Both
    sorted by loosening the clamps & giving the wheel a whack.
     
    Krusty, Apr 24, 2011
    #16
  17. Nige

    Alex Ferrier Guest

    <shrug>
    Never happened to me and I've fallen off plenty of bikes.
     
    Alex Ferrier, Apr 24, 2011
    #17
  18. 'Tain't ballcocks at all. There is a fair degree of misalignment can
    happen with improperly tightened yoke clamps, especially if the
    owner/maintainer is a tyro at it.

    A mate's bike was riding like a pig until I spotted the misaligned yokes
    - a simple slacken and tighten and what a difference. I reckon he'd
    simply not tightened them up enough, hit a pothole which shifted them a
    a bit and they stayed there.

    Istr another old snotterbike he had which exhibited similar symptoms
    after he'd dropped it - problem with that was, the bars had bent a bit
    too, so aligning the front properly still gave a slightly weird feeling
    to steering it.
     
    Grimly Curmudgeon, Apr 24, 2011
    #18
  19. Nige

    Beav Guest

    Did you really need a smiley on the end?
     
    Beav, Apr 25, 2011
    #19
  20. Nige

    zymurgy Guest

    They were swapped out, as the other ones were totally fucked by the
    fence. I got a bike mechanic to do it as i'd never done USD's before
    and didn't fancy it.

    Guess that's a bike shop i'll not be using again then ..

    Paul.
     
    zymurgy, Apr 26, 2011
    #20
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