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Raising the tail end

Discussion in 'Tech Tips' started by PommyLewis, May 26, 2014.

  1. PommyLewis

    PommyLewis Member

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    Hey guys. Just been doing abit of internet research on raising the rear end of my bike, apparently it can improve turn in response and most of all will mean i dont look as stupid on my bike! (im 6ft3 and look like im riding a minimoto) question is has anyone on here done this mod, what results did you get and how did you go about it? Ive read that people use a 'link', a longer shock or by removing the shock mount and using a 4-5mm spacer under it resulting in about a 15mm tail height increase. Any info on this matter would be great thanks.
     
  2. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    Hey mate my bike has had the tail raised at some point in the past by a PO. Not sure how I will get some pick in closer for you.

    One thing to watch for is the side stand. Mine still has a standard length one and the bike sure has a huge gangster lean when parked.
     
  3. PommyLewis

    PommyLewis Member

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    Sweet so its defo do-able then! has yours been done using the spacer method or a longer shock? just whipped the side fairings off at lunch but couldnt really see what i needed too without removing the tank etc. should be as easy as taking the weight off the rear wheel undoing the shock, remove the clevis joint insert the spacer/ nut (coilover style) then replace and it should have raised the back end!
     
  4. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Cant u just shorten the dog bones to raise the rear?

    Im just going on what I remember reading somewhere some time :cool:
     
    Last edited: May 26, 2014
  5. PommyLewis

    PommyLewis Member

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    hmmm its possible but may have some adverse effect on the bikes handling. i would think the spacer is going to be the easiest way and from what ive been reading is safe and can improve turn in.
     
  6. PommyLewis

    PommyLewis Member

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    Actually GI thats not a bad idea when ive just had a look. I have the facility's to make a few sets too if anyone might like any. Ill try it out sometime this week and post back up.
     
  7. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Yea I hadnt really googled it and read up on it ...I just remember it being discussed when u put an R6R shock on a Fizzer....new sized dogbones are needed to keep the same stock tail height

    Ruckusman has just done it to his FZR so he might chime in here.

    Ill be interested to see how you go with it .... might be something to try on my C model.

    If it works can u post up a few pics and a bit of your procedure

    cheers mate

    Heres some old stuff from the FZR forum

    http://fzr250.com/viewtopic.php?f=2&t=448&p=29132&hilit=rear shock replacement#p29132

    http://fzr250.com/viewtopic.php?f=22&t=3554&hilit=rear shock replacement
     
  8. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    GI is right I have had a look at the back of both my zxr and the dogbone is set different. Looks to be adjustable?? Will post the picks later on mate.
     
  9. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    Here is the gangsta lean i was speaking of
    10308138_10152713166399863_7212029494669848367_n.jpg
    this is the dog bone part on this bike
    10259707_10152713166554863_6344226768481248245_n.jpg
    and the dog bone of my other bike which sits at a lower seat height
    10300800_10152713166454863_6592972908295406715_n.jpg
    these photos were both taken whilst the bike were on a rear stand and is the only noticeable difference i couldn't see a spacer. As for the handling a cant say anything is wrong with it but having not ridden another one....

    cheers
    Huntsman
    .
     
  10. PommyLewis

    PommyLewis Member

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    Excellent thanks for that Huntsman. I'm going to make a few sets up and note the difference in height before and after. See what we get. As for handling I've read if you go too far you may get steering wobble easier due to the decrease in rake but I'll keep an eye on that.


    Sent from my iPhone using Tapatalk
     
  11. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    No worries buddy, I am going to adjust mine as I am a shortass and can only just get my leg over the seat how it is set lol. ATM it is set very high in the tail and i do slide forward on the seat abit as well.
     
  12. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    does the top one have that same number stamped on it?
     
  13. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    certainly does GI!
     
  14. PommyLewis

    PommyLewis Member

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    Took a few pics of mine this morning and a few rough measurements.
    IMG_1981.JPG Same number stamped on it as yours Huntsman.

    So it measures about 110 mm hole centers . I'm thinking if i make 3 new sets up 4 mm shorter, 8 mm shorter and 12 mm shorter, record the change in height at the tail fairing and I should be able to get the change in rake on the front fork too. Maybe spend a few days on each and see which feels best.

    Thanks

    Lewis
     
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  15. PommyLewis

    PommyLewis Member

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    upload_2014-5-27_10-50-57.png
    anyone able to tell me what size nut and washer that is on the top clevis? part no 92015/92022????
     
  16. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Why not fit a longer clevis to the shock. Do the same job and lot easier to change.
     
  17. PommyLewis

    PommyLewis Member

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    Yeah thats one of the methods im considering. It wouldn't be longer it would just have a spacer between that and the frame to effectively 'make the shock longer'
     
  18. Chuck

    Chuck Active Member

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    I had to make a set of dog bones to lower my wife's ninja 300 (2013) for the first few rides, after drawing a lay out of hole configuration, an in-line extension of 15 mm will give you 2.5 inches in seat height position. They were fabricated out of 8 mm stainless steel. hope this may help.
     

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