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Thread: Gsxr600k1 usd conversion.

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    Gsxr600k1 usd conversion.

    Hey folks just checking the opinions of the gsxr600 experts here.
    Wondering the practicality of fitting later model gixxer 600 usd forks to a K1 gixxer 600.
    My reasoning is that initial front end set up with be easier for the experts-Given that setup data tends to be forgotten after a few years.
    Am I just thinking shite or is this sa good idea??
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    Yep, get a complete frontend with radial brakes, lighter and more rigid + better brakes, ya can't go wrong
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    I posted this up many moons ago Frosty,may be some info re the swap.http://www.kiwibiker.co.nz/forums/sh...ad.php?t=80803 may well be of use to others with the modding madness.
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    Quote Originally Posted by FROSTY View Post
    Hey folks just checking the opinions of the gsxr600 experts here.
    Wondering the practicality of fitting later model gixxer 600 usd forks to a K1 gixxer 600.
    My reasoning is that initial front end set up with be easier for the experts-Given that setup data tends to be forgotten after a few years.
    Am I just thinking shite or is this sa good idea??
    the real question you should ask yourself is....will this benifit 'MY LAP TIMES'

    Or could the money be better spent elsewhere Tony?
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    Quote Originally Posted by 98tls View Post
    I posted this up many moons ago Frosty,may be some info re the swap.http://www.kiwibiker.co.nz/forums/sh...ad.php?t=80803 may well be of use to others with the modding madness.
    Thanks dude

    Quote Originally Posted by cowpoos View Post
    the real question you should ask yourself is....will this benifit 'MY LAP TIMES'

    Or could the money be better spent elsewhere Tony?
    Nahh man this is for a fun bike.
    To see a life newly created.To watch it grow and prosper. Isn't that the greatest gift a human being can be given?

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    Quote Originally Posted by FROSTY View Post
    Hey folks just checking the opinions of the gsxr600 experts here.
    Wondering the practicality of fitting later model gixxer 600 usd forks to a K1 gixxer 600.
    My reasoning is that initial front end set up with be easier for the experts-Given that setup data tends to be forgotten after a few years.
    Am I just thinking shite or is this sa good idea??
    Frosty, Frosy, Frosty,the setup data is always a work in progress. Point of fact there is never a perfect setting as there is always something better. There is no way that Id instal the same stuff in GSXR600K1 forks that I did back then, theres much better stuff and much better settings. Kinda makes sense after 8 years, nothing stands still.
    Sure the later forks allow the use of much better calipers etc but this is not night and day stuff. The BIG fault of USD forks is that fork deflection under load ( and there is ALWAYS some deflection ) moves the bushings / load bearing surfaces out of line, creating more friction. Reducing friction is one of the major preoccupations of any good suspension tuner. ''Right way up'' forks have rather less problem in that area.
    Much like the current ''tossing off'' preoccupation that journalists currently have with big piston forks ''progress'' is not always totally positive.

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    Quote Originally Posted by Robert Taylor View Post
    Frosty, Frosy, Frosty,the setup data is always a work in progress. Point of fact there is never a perfect setting as there is always something better. There is no way that Id instal the same stuff in GSXR600K1 forks that I did back then, theres much better stuff and much better settings. Kinda makes sense after 8 years, nothing stands still.
    Sure the later forks allow the use of much better calipers etc but this is not night and day stuff. The BIG fault of USD forks is that fork deflection under load ( and there is ALWAYS some deflection ) moves the bushings / load bearing surfaces out of line, creating more friction. Reducing friction is one of the major preoccupations of any good suspension tuner. ''Right way up'' forks have rather less problem in that area.
    Much like the current ''tossing off'' preoccupation that journalists currently have with big piston forks ''progress'' is not always totally positive.
    Jeysus Rob friggin try that in plain english woodja?
    Dya reckon then that the k1 front end is dial innable enough as is then ?
    For the sake of a simple pommy git please restrict ya answer to a simple yes/no
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    You know what they say, Frosty: if it ain't USD, it ain't worth shit.

    You need new brakes too......
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    Quote Originally Posted by FROSTY View Post
    Jeysus Rob friggin try that in plain english woodja?
    Dya reckon then that the k1 front end is dial innable enough as is then ?
    For the sake of a simple pommy git please restrict ya answer to a simple yes/no
    Why don't you ask Dave Manuel. I don't think he had any problem with his K1/2/3 front end this Nationals just gone.
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    Quote Originally Posted by White trash View Post
    Why don't you ask Dave Manuel. I don't think he had any problem with his K1/2/3 front end this Nationals just gone.
    nearly bought that one--then it was goneburgered
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    Quote Originally Posted by FROSTY View Post
    Jeysus Rob friggin try that in plain english woodja?
    Dya reckon then that the k1 front end is dial innable enough as is then ?
    For the sake of a simple pommy git please restrict ya answer to a simple yes/no
    hehe, he didn't say. Dontcha love just love boffins.

    Somewhere in there, he said the better braking you would get isn't actually a huge amount better, and there are issues with the USD fork suspension binding up under load.. hinting that you might achieve more with just tuning what you have got. I think.

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    Quote Originally Posted by FROSTY View Post
    Jeysus Rob friggin try that in plain english woodja?
    Dya reckon then that the k1 front end is dial innable enough as is then ?
    For the sake of a simple pommy git please restrict ya answer to a simple yes/no



    ENGRIS IS, Modify the std 01 forks mate, CKT have the specs to do it great.
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    Yep, time never stands still in the suspension world. Robert is always working on the latest developments/ideas.
    +1 on modifying the stock 01 forks
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    I would be very careful with the math. You may find a much better option would be to sell the K1 add the money a late model front end costs and buy a later model that already has better engineering.

    Unless your K1 is in excellent condition all your doing is adding a great front end to a bike that everything is worn and needs work done to.

    But gezz Frosty your a used vehicle saleman so I feel like I'm telling granny how to suck eggs.

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    Quote Originally Posted by GSVR View Post
    I would be very careful with the math. You may find a much better option would be to sell the K1 add the money a late model front end costs and buy a later model that already has better engineering.

    Unless your K1 is in excellent condition all your doing is adding a great front end to a bike that everything is worn and needs work done to.

    But gezz Frosty your a used vehicle saleman so I feel like I'm telling granny how to suck eggs.
    Fair point, but the only main wear items in both fork designs are the seals, upper and lower bushings, top cartridge bushings and the rebound bands. If the main tubes are pitted then obviously the cost gets out of control

    As for better engineering no, better function yes and no. USD forks bind more when deflected, the later model forks have a bending shim stack midvalve so there is more instant damping control, but the base components inside the cartridges are still much the same with much the same issues as back in 2001. And with the K6 / 7 / 8 a major deficiency in high speed rebound that needs addressing with reshimming.

    Swings and roundabouts, but the only trouble with a USD conversion is all the other costly bits that go with it and adaptation hassles, often.

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