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Adjusting rear shocks to lower the bike

Discussion in 'Hangout Lounge' started by Micheal, Sep 16, 2012.

  1. Micheal

    Micheal New Member

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    OK I know this may be a no brainer for most of you but here goes. I need to lower the bike using the adjustment on the rear shocks of my 1986 Maxim xjs700 for my daughter to ride. I thiught I could do it by just turning the lower portion with a punch on the part sticking out but I have not been able to get them to move. So, what is the trick?
     
  2. Dondada469

    Dondada469 Member

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    With that being said, is there a way to raise the bike?
     
  3. mlew

    mlew Well-Known Member

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    You have the right idea but that ring can get dirt and rust in making it hard to turn. Try some penatrating oil and work it back and fourth to free it up. You won't qet much lowering effect until the rider sits on the bike. Turn the ring one way to lower and the other way to raise.
     
  4. KrS14

    KrS14 Active Member

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    Pretty sure that's just preload, i don't think it's meant to "lower" the bike.
     
  5. Micheal

    Micheal New Member

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    OK That went well. Now that I have it lowered,thanks for that, Next I have no throttle return. I took the grip apart and there is no evidence of a spring there so where is the throttle return spring on this Maxim 700xjs?
     
  6. wscraig76

    wscraig76 Member

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    I want to lower mine too. Maybe half inch, full inch. but I thought that it required lowering springs or cutting the spring to be shorter... my problem is that while my toes touch my heels don't
     
  7. quebecois59

    quebecois59 Well-Known Member

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    Throttle spring is on the carb rack, not in the grip.
     
  8. thejewishguy

    thejewishguy Member

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    I lowered the rear of my XJ700 by installing some shorter shocks.
    I bought a set of progressive Harley Davidson Sporster shocks ($80.00 USED) that measure 11" from eye to eye.

    The stock shocks measure between 12.75" to 13" from Eye to Eye.
    [​IMG]

    [​IMG]

    The Harley shocks have to be modified tremendously because the Eyelets have to reamed up to a 9/16" hole and it is not an easy task since it will require a drill press, cutting oil and a good charp 9/16" drill bit. And after some heat the rubber bushing will start to spin.

    The right side shock lower eye you dont drill because there is an M8 bolt that goes on there but on all the shocks you have to take a hacksaw to make them less wide.

    I will post better pics later this evening or just go to my thread build below.

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    I also lowered the bike at the fork tubes by loosening the bolts on the trees.

    [​IMG]
     
  9. BleedingOxide

    BleedingOxide Member

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    I've been looking at lowering too, but what i've read has made me hesitant.
    basic rules seem to be:

    lower the rear and the front the same amount (to keep the rake and head angle correct)

    If you install shorter shocks you need to know that the length of the travel wont end up shorting the wheel on the rear fender

    Your ability to corner will be hampered by the exhaust/engineparts/frame whatever that are now closer to the ground

    If you want to lower the front you need to shorten the spring inside the fork rather than just ride the fork up the triples (because the initial soft part of the progressive spring will allow the front wheel-lower triple clearance to minimise faster than intended.)
    I'm sure theres a better way to write that...

    Also, I've been looking at 280mm shock length rather than 325mm, but I need to remember that when I'm sitting on the bike, It will sit a little lower giving me even less clearance/travel than intended.
    Yeh I could preload it up, but .. meh
     
  10. Polock

    Polock Well-Known Member

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    Mr.jewishguy, it's so much easier just to get the right shocks for your bike, or just get a set of bushings from progressive.

    BleedingOxide, a change like that in the back isn't going to change the handling that much. if it isn't right for you lift the tubes a little
     
  11. thejewishguy

    thejewishguy Member

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    Here is the old stock shock 13" and the smaller 11" Harley Davidson Sporster shock

    [​IMG]
     
  12. RATTLECANREBEL

    RATTLECANREBEL Member

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    The penetrating oil is a very good Ideal as well it is much easier to do with the bike on a lift taking the weight of the shocks this will lower the rear of yr bike but by doing so you all so lesson the stiffness of the suspention witch means you will bottom out with the same weight you did not before on the bike. so just as Polock suggested a new set of aftermarket lowering shock is the way to go unless you are about the same weight as yr youngon or want to change the hight (preload) on the shocks each time you ride after yr lil girl
    hope this helps
    Robert
     
  13. Shanesajda

    Shanesajda Member

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    Can you take the stock shocks and recount them not forward on the top to the frame? That would give the shocks more angle making the rear of the bike lower. Idk if this is possible but I was thinking of doing something like thst to my xj750 because I want the seat much lower
     
    gang3 likes this.
  14. gang3

    gang3 Member

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    There are a lot of ways to lower these bikes, I can speak for one of the less used ways. What I did was I cut about 1.5 inches out of my coil springs in my shocks, It lowered it just right for me, I weigh 185 lbs and no bottom outs for me. The bike still handles great and being short legged I now can sit flat footed on the bike at a stop.
     
  15. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    You effectively stiffened the springs by doing that.
     
  16. gang3

    gang3 Member

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    I`m not sure I stiffened the springs, But my goal was to lower the bike a bit to fit my body better, And that I did about 2" in height when you sit on it. I was too cheap to pay about 100 bucks for some Harley Sportster springs , So I decided to go this route, It worked fine for me. And the bike handles just as good as before, No steering issues, no bottom outs, Just perfect.IMO
     
    Last edited: Oct 2, 2014
  17. gang3

    gang3 Member

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    I might add I ride a solo seat and never plan to have a passenger so those worries are not mine either.
     

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