You must respring your bike based on your weight.

Discussion in 'The Perfect Line and Other Riding Myths' started by mikesova, Apr 3, 2012.

  1. lethe

    lethe Long timer

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    Another 150 or so pounder here :D
    Although probably closer to 160 right now, fat ass I'm getting to be
    I like that I just seem to be the design weight and size for most of these things :clap
    #21
  2. car94

    car94 What's this Box for?

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    All of the Above and for doG's sake don't ever short shift!
    [​IMG]
    #22
  3. viverrid

    viverrid not dead yet

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    He doesn't "have to". But he didn't think he "had to" respring his last bike either.

    He doesn't "have to" but if he does, it will handle a heckuva lot better. Maybe not as big a diff as his old bike to his new bike cuz there were also other factors involved, but a heckuva lot better.

    I weighed 180, a little less now with the cancer, and that was close enough for bikes like a DRZ, which I used to have. OTOH I find my Aprilia RXV to be very stiff, too stiff for amateur trail riding in the woods, I think it's both damping and springs. We also have an XT-225 and it is definitely soft for me, wallows and I can get it to pogo and bottom with the right (or would that be wrong) spacing & speed over gentle rollers on dirt roads.

    Suspension makes a diff and for a heavy guy on a small bike, I really do suggest he re-spring.
    #23
  4. opmike

    opmike Choosing to be here.

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    I've seen people be "happy" with some absurd shit. There's plenty of 250 lb guys riding around on bikes they're bottoming out that are grinning like fools each ride.

    Also, one's frame of reference matters. If you've only ridden on damping rod pogo sticks, any half decent suspension will feel like a massive upgrade.

    Speaking from past experience of riding bikes before and after an upgrade, I'd just respring the goddamed bike.

    But by all means, do what makes you "happy. " It's your money, not mine.
    #24
  5. high dangler

    high dangler Been here awhile

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    just ride the damn thing and have fun.
    the susp industry has to convince people that stock is no good so they can sell their pricey parts.
    Really Its the same with all aftermarket parts
    #25
  6. mikesova

    mikesova Michigander

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    Ok, I've had a major cold the last few days so riding is out, and I'm on spring break (work at the school) so I've been playing around with this the sag adjustment following this: http://www.planetklx.org/techtips/sag.html

    I'm very close to having the "race sag" correct. I think. I just don't have my wife here to measure for me. (I was working on it last night, having her come and measure every few minutes ;) Is this possible with the stock spring? It has definitely tightened up the rear suspension. Am I theoretically heading in the right direction? I don't mind playing around with the stock stuff just to see what happens.
    #26
  7. theDoktor

    theDoktor Husky Racer

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    Mike, playing around with your stock adjustments is absolutely the best way to start. Keep a written record of your measurements and each of your adjustments and only make one adjustment at a time. You absolutely DO NOT make more than one adjustment at a time! Test ride after each adjustment and record the results. Do the spring and preload adjustments first. If they are within the factory-recommended range, then proceed with the dampening adjustments. From what I read on the link, they probably have very good and easy-to-follow instructions on dampening adjustment.

    Have fun with it and enjoy the results.
    #27
  8. dwoodward

    dwoodward Long timer

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    Yes, you're heading in the right direction. My suspension guy says it's better to have the right spring with minimal pre-load than the wrong spring with LOTS of pre-load, but that's better than nothing.

    So keep playing iwth it, and if you find it makes things even better, then maybe springs is the next step.
    #28
  9. engineerjoe

    engineerjoe Adventurer

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    The best money I ever put into my DRZ was to have the suspension resprung and revalved for my weight and riding style. It helped on trails, the supermoto track and everyday riding on the street.

    When riding aggressively, it will make a huge difference in performance and comfort.
    When putting around you won't notice the changes as much as you won't be using the suspension as much.

    My suggestion is to ride it as it is untill you decide you want to go faster.
    #29
  10. SuperGlueRyan

    SuperGlueRyan Been here awhile

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    As one fat ass to another:

    If it is within your means Mechanically/Financially just respring/valve it and tune the suspension for your weight. It makes a difference. I'd rather pay 110% of the bike and get 100% our of it than 100% and only get 50-60% out of it.

    But if it is really a non-issue to you, then eff it and just leave it as is.
    #30
  11. high dangler

    high dangler Been here awhile

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    all my life ive heard how great and how much difference a pricey susp. will make.I thought it was bullshit but had to find out for myself.
    I had my FZ1 done up with Ohlins about a year ago.
    Also set up by local susp. guru.
    To tell the god honest truth I dont notice much difference over the stock susp that was suposed to be so bad .
    I can ride em any old way I guess ,i must not be in tune with susp and all the silly adjustments. Im starting to think they dont even mean anything.
    Save your money ,is all Ive got to say
    #31
  12. viverrid

    viverrid not dead yet

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    Right direction but keep in mind that there is a minimum spring length limit. In theory if it was way too compressed on preload you could bottom the spring before you bottomed the suspension travel and could have limited travel and/or break something.

    In the end (with a constant wound spring), you are changing the preload and thus the initial ride height, but not the spring RATE, so with your weight you will still get more deflection/travel for the same transient loading.
    #32
  13. B.Curvin

    B.Curvin Feral Chia tamer

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    If you really can't tell a difference, then you were no where near its limits to begin with.

    Go faster. :D
    #33
  14. PT Rider

    PT Rider Been here awhile

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    But mike isn't asking about a top shelf aftermarket suspension. He is just asking about springs that properly carry his loaded riding weight. Springs that match the load are always better than springs that don't match the load.
    #34
  15. LittleRedToyota

    LittleRedToyota Yinzer

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    also, an FZ1 vs. KLX250 is apples and oranges when it comes to what you need from the suspension.

    if the OP is only ever going to ride his KLX on the street, i would personally say don't worry about it. if he wants to ride it offroad, though, i would personally recommend he get the correct springs.
    #35
  16. David R

    David R I been called a Nut Job..

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    I know the bike, I had an 09 KLX250SF. The valves in the front forks lock up under hard high speed bumps. Then the handle bars or the whole bike wants to go sideways. Front springs are really weak. Go to Kawasaki forums and see what is going on there. I put new valves in my forks and it made a huge difference. On MY model the forks had extra stuff springs because its a super moto. I did not need to change them although I weigh 199.9 lbs.

    Good luck. On your bike I would have the suspension re done to fit you front and rear.
    #36
  17. MrLebowski

    MrLebowski Been here awhile

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    Going from the suspension of an XR200 to a KLX is a BIG improvement, going to springs and settings specifically for your weight will be almost as big of an improvement on top of that... imo. You'll get your money's worth.

    You may be happy right now with things the way they are... but your missing out on how much happier you will be!
    #37
  18. mikesova

    mikesova Michigander

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    After adjusting the preload and installing a slightly taller tire, I'm unhappy. It's raised the rear end too much and I can't touch the ground as well as I could before. For now, I think I'm going to go 1/2 way back to the original preload setting.
    #38
  19. bobnoxious67

    bobnoxious67 Baby steps...

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    If flat footing is more important than proper suspension settings, definitely put off spending money on the suspension:lol3
    #39
  20. MrLebowski

    MrLebowski Been here awhile

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    +1

    disregard my previous post :1drink
    #40