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Thread: showa forks

  1. #1
    kevcole
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    showa forks

    after deciding against sending the forks to be serviced and revalved due to the costs involved, i thought i would see why the front feels so harsh.

    made a couple of tools to help


    then proceeded to pull the internals out ready for new seals and fresh oil next week


    dust seal was shot, main seal looked ok, both bushes ok. but the oil looked rank


    will have to make something to knock the bush and seals back in, and to set the levels correctly.

    the preload and rebound adjusters were seized together, so could explain the way it felt, they wont be when it goes back together

    crack on with the other leg once this is back together

  2. #2
    amb67
    Guest
    I overhauled mine recently due to the front end feeling very unstable, my oil was in shit state too, replaced with Silkolene Pro 5W. (I'm around 13.5 stone kitted up)

    Glides over the road surface now and is rock steady on bends and uneven surfaces.

  3. #3
    One Liter Duc Eater Sabre's Avatar
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    Quote Originally Posted by amb67 View Post
    I overhauled mine recently due to the front end feeling very unstable, my oil was in shit state too, replaced with Silkolene Pro 5W. (I'm around 13.5 stone kitted up)

    Glides over the road surface now and is rock steady on bends and uneven surfaces.
    Mine was the same. Replace oil ever 9000

  4. #4
    kevcole
    Guest
    all back together now

    no pictures cus the camera packed up

    and whats the deal with having to break into a second litre of bloody fork oil!


    still not tested it yet as i'm cleaning the threads on the sachs unit as the collars were stuck solid

    Kev

  5. #5
    One Liter Duc Eater Sabre's Avatar
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    Quote Originally Posted by kevcole View Post
    all back together now

    no pictures cus the camera packed up

    and whats the deal with having to break into a second litre of bloody fork oil!


    still not tested it yet as i'm cleaning the threads on the sachs unit as the collars were stuck solid

    Kev
    I used one container for the two legs so as to increase the air gap. Now I get all but 10mm of travel. Saved the second bottle for the next time

  6. #6
    kevcole
    Guest
    picked up a scruffy pair of fork legs to experiment with

    stripped the valves out the damper tube


    this is the compression shim stack


    this is the rebound shim stack


    will look at swapping the shims around to increase the rebound damping and decreasing the compression.

    Kev

  7. #7
    Evil Twin
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    As I'm a techincal numpty, can anybody reccommend someone affordable for servicing forks?

  8. #8
    kevcole
    Guest
    not sure

    i did my own, but depending on where you are there may be someone on the forum who can point you in the right direction

    Kev

  9. #9
    kevcole
    Guest
    swapped the second pair of forks over last night, after changing the shims in the dampers.

    changed the compression as can be seen in the graph, blue is stock, yellow is the new shim stack stack


    the rebound is the same, blue is stock and yellow is the new shim stack


    ignore the dashed lines, there just the range of adjustment in the screws as stock.

    as for the ride, i still ended up with the compression wound all the way out and the rebound all the way in, but even so, it's miles better. really took the edge of the harsh feel on the front, far more compliant. probably not to everyones taste, but it's more comfortable with it softer, might not work on a track, but for roads in the midlands its getting better.

    pulling them back out tonight hopefully so i can make more changes

    Kev

  10. #10
    One Liter Duc Eater Sabre's Avatar
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    Was your avatar taken at coseley baths

  11. #11
    kevcole
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    think you should of gone to specsavers

    can't you tell by the crystal clear shimmering water that it was bilston baths!!!!!!

  12. #12
    IanG
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    Water ?? What waters that then ?

  13. #13
    One Liter Duc Eater Sabre's Avatar
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    Quote Originally Posted by kevcole View Post
    think you should of gone to specsavers

    can't you tell by the crystal clear shimmering water that it was bilston baths!!!!!!
    Ive got to admit, my first thought it could be Bilston but I was fooled by the lack of "floaters"

  14. #14
    kevcole
    Guest
    ok

    second re-valve all dialed in.

    softened the compression some more and stiffened the rebound too. all this is with the stock shims, just shuffled around.

    this is the new compression flow


    this is the new rebound flow


    the blue lines (setting) are the stock showa valving and the yellow lines (current) are the new shim configuration.

    the bike is so supple now on the front, nice and soft, which suits me. so much more confident in the front end now, holds its line real nice mid corner, doesn't seem to be easliy upset etc. all in all real happy with it. and as my speed and confidence with the bike grows i'm sure the valving will change again.

    Kev

  15. #15
    kevcole
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    boys and girls

    get your showa's (or ohlins) revalved or set-up to suit you. I've just spent a few hours this afternoon being a compete moron around cannock after i revalved my own showa's last week.

    it's the best thing you can ever do, forget more power, you don't need it. there's more than enough when you can wind it on whenever you need without fear that it will bite you in the arse.

    it's a proper hooligan machine now, forget traffic, you can carve them up at will once the suspenders are sorted.

    if your technically minded, it's not too taxing to do it yourself either. but if your not sure then go get it done by experts, it's money well spent.

    Kev

  16. #16
    One Liter Duc Eater
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    Ive just finished changing the oil in my forks. The old oil came out looking kinda like black coffee. I didnt need any special tools, i just had someone lend a hand and pulled the spring presser tube down with my hands using a bit of cloth to grip it while my helper took the end off, it didnt take much force to compress the spring.
    I tipped a little bit of fresh oil in to the drained forks and pumped the damper rod a bit to help flush out that stinky old oil then re drained, dindnt want to risk damaging any seals or bushes with petrol or the like, worked quite well.
    Cant wait til the nicer weather to ride it and get some settings dialled in
    Definately get someone to lend a hand, it will help LOADS
    Last edited by The Lone Ranger; December 20th, 2009 at 06:59 AM.

  17. #17
    Formerly GazP, but still a twat for asking crashtd to change his username. :-P Hollow Man's Avatar
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    Quote Originally Posted by jon_melson View Post
    As I'm a techincal numpty, can anybody reccommend someone affordable for servicing forks?
    Im sure Griff is an Ohlins man...give him a buzz..

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