Page 1 of 3 123 LastLast
Results 1 to 15 of 37

Thread: CKT Racetech fork overhaul/upgrade

  1. #1
    Join Date
    30th March 2004 - 11:00
    Bike
    2001 RC46
    Location
    Norfshaw
    Posts
    10,455
    Blog Entries
    17

    CKT Racetech fork overhaul/upgrade

    It all made sense on the way home tonight. This morning...? Pfffftt... I dunno.
    Literally - I really didn't know what to expect, but I expected it to be HUGE. Fantastic.
    My first ride on my rejuvenated forks, and I was expecting... perfection, I guess.
    Where was the Magic Carpet Ride? Why could I feel the bumps like that? Is this what you get for A Whole Lotta Money? What was that strange feeling in the first turn I made?

    I thought about it during the day, and felt disappointed, perhaps a little cheated. Then I started to rationalise, which made me feel a little better. The seals were brand new, it was cold this morning so the oil was more viscous, I'd only tested it on a short ride, most of that was motorway, blah blah blahdy blah.

    Then I rode home, and suddenly realised something. An epiphany, if you like. The VFR was very composed - it was gliding along with no fuss, no bother, no fidgetyness.
    You know those really stupid cars you see, with the chopped springs, no suspension travel, crappy damping, and they're all hoppy over every little undulation in the road? Well, the VFR didn't used to be quite that bad, but that's what it reminded me of, with it's stiffer springs but crap damping and worn out fork internals. Tiring.
    Annoyingly jiggly ride.

    But not any more.
    Then I noticed other things....
    That strange corner thingie: it was turning the bars into low speed corners.
    And there was nothing much happening apart from cornering.
    No lateral movement in the fork tubes meant no interference to the steering from mid-corner ripples. Compliant damping meant less pressure required on the inside bar, almost none in fact.

    On with the brakes... less dive. Much less dive.
    How can that be? It's the same springs, albeit with the preload now set to where it should be, not backed off to give a softer, less jiggly ride.
    Ahhh... it's now all working as it should be. It doesn't feel amazing, because all it's doing is what it's supposed to.
    No drama, no fuss, no fireworks, nothing much to notice except what's not there.
    It's all so relaxing and pleasant. Almost... boring.
    Good suspension is boooorrrrriiiinnnnnng!!!
    Well... the "CKT Racetech" decals are kinda OK, but the rest? Pfffttt!!

    Here was I, excited about my flashed-up new forks, disappointed because there's no excitement. Well duh...


    Tech Stuff
    I fitted some uprated springs many moons ago, as that was all I could afford. They're 0.95kg/mm linear rate, as compared to the stock 0.74 progressive rate springs.
    CKT refurbished the forks with new seals (I thought I might as well, while it was in the workshop); new bushes (old ones had lost teflon and some of the bushing material); chucked out the old compression piston thingies (yeah, that's a technical term) as the ports were too small, so they didn't cope well with flowing oil when I rode over sharp bumps, and fitted some Racetech Gold Valves. This was mated to a rejigged shim stack so the damping was more betterer; then the whole lot was basted with some shiny new fork oil, presumably made from Swedish baby virgin fur seal whale penguins, and more slippery than Winston Peters. After casting some special arcane and esoteric incantations over the whole lot, they rewrapped it in the crappy bubble wrap I cadged from the furniture folks downstairs, and sent it all back to me quick smart, via the Botany Honda people, who I got to meet for the first time last week.

    Thanks to Josh (parts dude at Botany Honda) and Robert Taylor at Crown Kiwi Technical.
    ... and that's what I think.

    Or summat.


    Or maybe not...

    Dunno really....


  2. #2
    Join Date
    28th July 2008 - 14:43
    Bike
    GSA & WR
    Location
    Auckland, Swanson
    Posts
    1,877
    Welcome to ma world mate, best upgrade of a motorcycle in my opinion. Sort the bits that go up and down before you play with the bits that make you go forward or stop. The improvement for the $ is amazing.
    Get yourself down to Frosty's on the weekend and Shaun will cast a knowing eye over it for ya and set it up purrrfect

  3. #3
    Join Date
    3rd November 2007 - 07:46
    Bike
    KTM 1290 SDR
    Location
    Palmerston North
    Posts
    3,962
    Great write-up vifferman!

    It's something I still need to address on mine. I have over half the money set aside.
    Nunquam Non Paratus

  4. #4
    Join Date
    11th February 2008 - 13:52
    Bike
    06 Triumph Speedtriple
    Location
    Wellington
    Posts
    94
    Blog Entries
    1
    Pretty pleased with mine also.

  5. #5
    Join Date
    3rd November 2007 - 07:46
    Bike
    KTM 1290 SDR
    Location
    Palmerston North
    Posts
    3,962
    Quote Originally Posted by Stampy View Post
    Pretty pleased with mine also.
    Oh, well that answers my question to you on the other site Stampy (Ferris).
    Nunquam Non Paratus

  6. #6
    Join Date
    5th February 2008 - 13:07
    Bike
    2006 Hyosung GT650R
    Location
    BOP
    Posts
    7,141
    Quote Originally Posted by vifferman View Post
    Good suspension is boooorrrrriiiinnnnnng!!!
    Nice write up, vifferman.

    I clicked onto this just a little while ago. What would happen if I had great suspension? How would I feel?

    It occurred to me, that it would make my bike faster through corners, less bashy on the spine on trips, but also less, um, something to ride.

    I don't know if I would call it less interesting to ride. And I don't know if I wanted to go faster. It would be nice if it wasn't so rigid on the square-edged bumps.


    Steve
    "I am a licenced motorcycle instructor, I agree with dangerousbastard, no point in repeating what he said."
    "read what Steve says. He's right."
    "What Steve said pretty much summed it up."
    "I did axactly as you said and it worked...!!"
    "Wow, Great advise there DB."
    WTB: Hyosung bikes or going or not.

  7. #7
    Join Date
    20th June 2005 - 14:27
    Bike
    Fatbob
    Location
    the 'Tron
    Posts
    1,348
    I'm about 70% happy with my forks/shock

    One day I need to find some money, and time to get them tuned.

    I bought mine second hand, tuned for somebody else

  8. #8
    Join Date
    1st November 2005 - 08:18
    Bike
    F-117.
    Location
    Banana Republic of NZ
    Posts
    7,048
    Quote Originally Posted by vifferman View Post
    and more slippery than Winston Peters.
    Now, that is slippery!
    TOP QUOTE: “The problem with socialism is that sooner or later you run out of other people’s money.”

  9. #9
    Join Date
    3rd November 2005 - 08:10
    Bike
    GSXR450
    Location
    Adelaide
    Posts
    7,037
    Quote Originally Posted by Kiwi Graham View Post
    Welcome to ma world mate, best upgrade of a motorcycle in my opinion. Sort the bits that go up and down before you play with the bits that make you go forward or stop. The improvement for the $ is amazing.
    Get yourself down to Frosty's on the weekend and Shaun will cast a knowing eye over it for ya and set it up purrrfect


    Sure will do
    I fear the day technology will surpass our human interaction. The world will have a generation of idiots! ALBERT EINSTEIN

  10. #10
    Join Date
    11th February 2008 - 13:52
    Bike
    06 Triumph Speedtriple
    Location
    Wellington
    Posts
    94
    Blog Entries
    1
    Quote Originally Posted by Owl View Post
    Oh, well that answers my question to you on the other site Stampy (Ferris).
    Haha! Sweet Ferris Better pop over and have a look

  11. #11
    Join Date
    3rd November 2005 - 08:10
    Bike
    GSXR450
    Location
    Adelaide
    Posts
    7,037
    Quote Originally Posted by TerminalAddict View Post
    I'm about 70% happy with my forks/shock

    One day I need to find some money, and time to get them tuned.

    I bought mine second hand, tuned for somebody else
    What bike and what suspension parts are in it mate
    I fear the day technology will surpass our human interaction. The world will have a generation of idiots! ALBERT EINSTEIN

  12. #12
    Join Date
    20th June 2005 - 14:27
    Bike
    Fatbob
    Location
    the 'Tron
    Posts
    1,348
    Quote Originally Posted by Shaun View Post
    What bike and what suspension parts are in it mate
    cb900f5

    racetecky fork internals
    ohlins 46dr in the back (the one without the remote reservoir)

  13. #13
    Join Date
    9th January 2005 - 22:12
    Bike
    Street Triple R
    Location
    christchurch
    Posts
    8,376
    Quote Originally Posted by Shaun View Post
    What bike and what suspension parts are in it mate
    the forks were set up for me on my 900 Hornet: I cant recall the spring rate but I am (was) <75kg ready to ride so they will be well baggy for anyone heavier.

    I'm a fan of this sort of work also. New shocks and fork rebuild were the first big ticket things I had done on the new bike.
    Last edited by HenryDorsetCase; 28th July 2009 at 12:42. Reason: clarity
    I thought elections were decided by angry posts on social media. - F5 Dave

  14. #14
    Join Date
    3rd November 2005 - 08:10
    Bike
    GSXR450
    Location
    Adelaide
    Posts
    7,037
    If I can help you at all, bring bike along to the following address this SUNDAY the 2nd
    MILLARS CAR CENTRE
    25 CORBAN AVENUE
    HENDERSON
    Sunday 2nd august 2009
    From 10 am till Shaun goes home
    I fear the day technology will surpass our human interaction. The world will have a generation of idiots! ALBERT EINSTEIN

  15. #15
    Join Date
    30th March 2004 - 11:00
    Bike
    2001 RC46
    Location
    Norfshaw
    Posts
    10,455
    Blog Entries
    17
    Well, duh!
    This morning I finally noticed another benefit of the fork overhaul. The VFR had this weird weaving thing going on, where at ~100km/h, it didn't like going in a straight line, but sort of meandered randomly . I had wondered whether it was the suspension, but it seemed to be better when I used a tank bag rather than the Ventura pack, so I'd put it down to being some kind of combination of aerodynamics, weight distribution, and the tread pattern of the Avon Storm on the front.
    So, I'm riding towards Albania on the Northern this morning, and I noticed how rock-like the bike felt (yeah, I know it's heavyish, but I was talking about stability). And that's with more rear ride height and spring preload than I had before, PLUS a steeper rake angle/less trail courtesy of the fork tubes being higher in the triples.

    This is all Good Stuff.
    ... and that's what I think.

    Or summat.


    Or maybe not...

    Dunno really....


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •