SV650 suspension

Discussion in 'UK Motorcycles' started by ogden, Mar 28, 2007.

  1. ogden

    ogden Guest

    Before I go Bonwick on the thing, don't suppose anyone knows what
    optimum settings for an average weight rider might be?

    They're not phenomenally adjustable, so I'm not hoping for much...

    --
    ogden
    sv650 (slow)
    cg125 (dead)
    zx7r (in bits)

    Last few 7R bits: http://search.ebay.co.uk/_W0QQsassZdr.daifQQhtZ-1
     
    ogden, Mar 28, 2007
    #1
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  2. ogden

    Lozzo Guest

    ogden says...
    Try asking the boys who race them on the Bemsee forum.

    --
    Lozzo
    Triumph Daytona 955i SE (Black with added black bits)
    Suzuki Bandit 600S (Green with added shit bits)
    Yamaha SR250 Delusion (It's "Special")
    Homefucking is killing prostitution.
     
    Lozzo, Mar 28, 2007
    #2
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  3. ogden

    ogden Guest

    There are other screws? Short of dropping the yokes or replacing
    linkages (can you believe there are FAQs on the web about _softening_
    the suspension??), there's not much other than preload adjustment
    anyway. Was just hoping someone might have a good starting point for
    just how much preload would be ideal...

    --
    ogden
    sv650 (slow)
    cg125 (dead)
    zx7r (in bits)

    Last few 7R bits: http://search.ebay.co.uk/_W0QQsassZdr.daifQQhtZ-1
     
    ogden, Mar 28, 2007
    #3
  4. ogden

    Molly Guest

    Set the static sag first then work from there.

    I nicked this off my website.

    One of the most important suspension settings is static sag-the amount your
    bike's suspension compresses when you sit on it. This method takes into
    account any stiction in the components. It's best to have two friends to
    help-one to hold the bike while the other one measures-while you (fully
    dressed in your riding gear) do the compressing.

    First, extend the front suspension completely. Measure from the seal wiper
    to the triple clamp for a conventional fork, or to the axle clamp for an
    inverted fork. Call this number L1. Sit on your bike in a normal riding
    position (or racing crouch if you're track-bound), and have one helper
    steady the bike. Your second helper should push down on the fork, let it
    extend slowly and then re-measure as before. This number is L2.

    Finally, the fork should be extended by hand, settled slowly, and
    re-measured. This figure is L3. Halfway between L2 and L3 is where your
    suspension would settle if there were no friction in the system. Static sag
    can be calculated as follows: sag=L1-(L3+L2)/2. Repeat this process to
    determine the rear sag-measuring from the axle to a point directly above on
    the frame for each of the numbers. If you have too much or too little sag,
    dial in more or less (respectively) preload as needed.
     
    Molly, Mar 28, 2007
    #4
  5. ogden

    Kevin Stone Guest

    www.MollyG.net

    You have a link on your home page to wwww.betarecords.com - note the 4 w. It
    don't work.
     
    Kevin Stone, Mar 28, 2007
    #5
  6. ogden wrote
    In the middle?

    Mind you it depends what you mean by average dunnit?
    Neither are we dearie, neither are we.
     
    steve auvache, Mar 28, 2007
    #6
  7. Molly wrote
    Assuming that is accurate that is just the sort of thing wot should be
    in the ffaq.
     
    steve auvache, Mar 28, 2007
    #7
  8. ogden

    Andy Bonwick Guest

    I always assumed that anyone capable of taking advantage of the sag
    being set up correctly would know how to do it.
     
    Andy Bonwick, Mar 28, 2007
    #8
  9. Andy Bonwick wrote
    Well yes, obviously but as I appear to be the only one round here who is
    prepared to admit that I find the handling of most bikes still much
    better than me however I twiddle the knobs and stuff on the running gear
    and thus tend to go for a nice squidgy comfy setting so any advice I
    might offer on the subject is considered a matter for derision by The
    Experts but I would still relish the chance to contribute my meager
    knowledge to the pool if only with a modest call for the poster to ****
    off and read the ffaq should he be so silly as to want to faff around
    given that practicing his basic riding skills will do more to improve
    the handling of his bike than anything else on the plantlette.

    Mind you having the good advice like that prefixed with your good advice
    as well might be even better. Perhaps something Ms Gower might consider
    for the future.
     
    steve auvache, Mar 28, 2007
    #9
  10. ogden

    MikeH Guest

    I've never had a bike that wasn't better at corners than me, and that
    includes learning on a CB100N.
    I can make the handling worse by adjusting things to their limits in
    either direction, but it's always brown trousers well before I get off
    the flat part of the tyres.
     
    MikeH, Mar 28, 2007
    #10
  11. ogden

    Adie Guest

    have you ever thought it might already be there?

    <goes to check>

    nope.

    <adds to list>
    --
    Adie
    (replace spam with nickname to reply)

    UKRM FAQ: http://www.ukrm.net/faq/
    keeper of the ukrm faq for my sins

    YZF-R1: ZX9R E1

    MRO#11 BOTAFOF#7 BOTAFOT#130 DIAABTCOD#17 MIB#24 YTC#16 BOB#15 ex-UKRMMA#22 BOMB#11
     
    Adie, Mar 28, 2007
    #11
  12. Adie wrote
    I hope you have added Bonwick minor's comment as well, just as relevant
    it is.
     
    steve auvache, Mar 28, 2007
    #12
  13. ogden

    ogden Guest

    Two more on at the front seems to have made quite a difference, haven't
    fiddled with the back yet. Fuckloads of plod round Bicester, wonder if
    someone's done a runner from the prison.

    --
    ogden
    sv650 (slow)
    cg125 (dead)
    zx7r (in bits)

    Last few 7R bits: http://search.ebay.co.uk/_W0QQsassZdr.daifQQhtZ-1
     
    ogden, Mar 28, 2007
    #13
  14. ogden

    Christofire Guest

    I wound the preload on the shock up to about 5, and put 15W fork oil in
    (instead of the 5W as standard). It worked for me.

    You could go nuts with it and fit all sorts of fancy shit, but those
    simple tweaks were fine.
     
    Christofire, Mar 28, 2007
    #14
  15. ogden

    Christofire Guest

    What's too little, or too much? From what I read of that, you'll end up
    with a figure but have nothing to aim for. As the OP was originally
    asking for something to try out and work from, does this help much?
     
    Christofire, Mar 28, 2007
    #15
  16. ogden

    Moon Badger Guest

    I've always aimed for one third of the available travel as static sag. Dunno
    if this is right or not, but it works for me.

    Thanks to adjusters on the top of the stanchions, I'm no longer making
    spacers from washers and 2p coins.
     
    Moon Badger, Mar 28, 2007
    #16
  17. ogden

    MikeH Guest

    <visions of a bike with a Hotpoint attached to each side>

    "Take her up to full spin, Mr. Scott"
    "She cannae take any more, sir. We're on family wash as it is!"
     
    MikeH, Mar 28, 2007
    #17
  18. Rule of thumb as a starting point is 1" of sag with the rider on.
     
    Grimly Curmudgeon, Mar 28, 2007
    #18
  19. ogden

    ogden Guest

    I've wound on the front preload to one line short of maximum, and it's a
    step in the right direction. When I feel motivated enough to bother,
    I'll wind the back up to about the same and see what happens. The little
    I've done so far has been enough to transform it from terrifying to
    slightly treacherous.

    Bugger that, this is a 1 year stopgap til I have NCB again. The most
    I've spent (other than the cost of the bike) is 60 quid on a hugger I
    can no doubt punt back out on ebay for the same this time next year.

    --
    ogden
    sv650 (slow)
    cg125 (dead)
    zx7r (in bits)

    Last few 7R bits: http://search.ebay.co.uk/_W0QQsassZdr.daifQQhtZ-1
     
    ogden, Mar 28, 2007
    #19
  20. ogden

    Christofire Guest

    I didn't realise you had a newer fancy one. My forks had no adjustment.
    I didn't think the handling was all that bad. Have you checked
    www.sv650.org for articles? It was pretty helpful.
     
    Christofire, Mar 29, 2007
    #20
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