HPN inserts for GS forks

Discussion in 'Airheads' started by Beemerboff, Sep 9, 2007.

  1. Solo Lobo

    Solo Lobo airhead or nothing

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    Nope, but provided someone (other than ohlins perpahs) makes a cartridge that has the correct OD, the rest is just parts and know-how... perhaps the limiting factor is the small OD of the G/S forks?
    #61
  2. Solo Lobo

    Solo Lobo airhead or nothing

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    Bitubo makes 'em, granted they are for the F800GS and USD forks... don't know if they make kits for conventionals...

    [​IMG]
    #62
  3. Beemerboff

    Beemerboff Long timer

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    YSS are probably a better option - they do valve kits for the other airheads which dont have the Marzocci forks so small runs dont seem to be a problem for them.
    #63
  4. Phreaky Phil

    Phreaky Phil Long timer

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    Sorry, I didnt have time for a proper reply earlier. I spend a bit of time on occasions at our Ohlins dealer and while there an awesome bit of kit theyre pricey. I think about NZ$3000. The complete Ohlins Forks were over $5000 so the kit is a cheaper option. I think a list of who would be interested in a kit is a good idea. I guess knowing a price is a consideration. Am I right in saying HPN were selling theres for 585euros ?
    #64
  5. Beemerboff

    Beemerboff Long timer

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    I landed a pair in Oz for around $A570 - they dont charge the 18% sales tax and post was reasonable.
    #65
  6. igormortis

    igormortis Cafe Reise

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    Well, I'm currently deciding what's right for my bike - GS or another front end. I'm gonna convert a road model, and if the HPN inserts can be "resurrected" I'll definitely go with the GS forks.
    #66
  7. Solo Lobo

    Solo Lobo airhead or nothing

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    Just caught this note over on UKGSer...

    and sent an email to Munich to ask if they do indeed make mono inserts and how much they may be!
    #67
  8. StephenB

    StephenB G(/)S ... what else!

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    Fill me in: mono forks/inserts? 36mm forks as used on monolever? The ones for the monolever street bikes are shorter than the G/S, no?
    #68
  9. Solo Lobo

    Solo Lobo airhead or nothing

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    what do you get if you cross an elephant with a rino...


    elephrino

    Anyway, the comment I posted came from a G/S rider... draw your own conclusions until I hear back from these guys.
    #69
  10. StephenB

    StephenB G(/)S ... what else!

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    So ... G/S fork inserts? You're dreaming again of how fast you can spend another bundle without moving the bike :freaky :rofl
    #70
  11. Solo Lobo

    Solo Lobo airhead or nothing

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    Too true, just shopping if anything... my fork changes from last weekend did a real difference and I may not need to do anything drastic... but if the replacement internals are priced OK, why not do it?
    #71
  12. StephenB

    StephenB G(/)S ... what else!

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    Absolutely. I have still to tune my front (GS) forks but I first like to see how they perform under load. Single and unloaded, I don't have enough sag so they are a bit stiff, but not bad. I will have to take maybe 1/2in pre-load off to make it right for solo riding, but maybe it would be too soft then loaded. Do you have experience for the front forks from your GS days?
    #72
  13. Solo Lobo

    Solo Lobo airhead or nothing

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    Mine worked very well.. I had a racetech emulator (1.25 turns of preload), stock springs, stick spacer cut down for the height of the racetech cartridge, and 10wt fork oil
    #73
  14. StephenB

    StephenB G(/)S ... what else!

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    Ah, mine's still on 2 turns (factory) with stock springs and spacer cut to length per instructions ... you couldn't have any sag, you're lighter than me if I recall (I am about about 210 give or take). I am running 7.5wt ... IIRC.
    #74
  15. Solo Lobo

    Solo Lobo airhead or nothing

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    Remember the 2 turns in the instruction for the bike the 'valve was designed for... and in the case of the the ones used in the GS that would be a Harley or Metric Cruiser...

    That means the 2 turns is for a heavier bike with much less suspension travel (as least I think that is what it means).... and that leads me to conclude less pre-load(and/or a softer spring) would make the 'valve work better on a GS
    #75
  16. Beemerboff

    Beemerboff Long timer

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    Got that wrong - YSS make catridge emulators for the forks - they are on the Munich site for $A170-.
    #76
  17. Solo Lobo

    Solo Lobo airhead or nothing

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    Thanks for the clarification, I was wondering what the deal was... back to the drawing board! :D
    #77
  18. jimbee

    jimbee Airhead Intermediate

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    Has anyone here tried these yet? I spoke to the guy at EPM about them several months ago and he said that they would work in a R100GS fork. Just wondering if anyone can think of a reason to go with a YSS emulator over one from Race Tech? I do beleive you can buy a single YSS as opposed to having to buy a pair....
    #78
  19. Beemerboff

    Beemerboff Long timer

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    Try a search on the whole site, not just this forum - or perhaps google- there is something out there.
    #79
  20. Phreaky Phil

    Phreaky Phil Long timer

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    Has anyone followed up on this ?
    #80