Suspension Question

Discussion in 'Technical Help' started by Ash34, Oct 25, 2017.

  1. What benefit do these new fangled front forks with pressurised cartridges give over normal forks?
     
  2. Make irrisitable to girls/boys.*
    *Delete as appropriate:)
     
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  3. I’d guess variable adjustments are higher, ie one click makes more difference. Or it’s the opposite. So no idea lol
     
  4. At 12K a set you will certainly be attractive to your nearest Ohlins dealer.
     
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  5. No idea as at that cost I'd be too afraid to push it, writing off a front end hurts enough running Road and Track forks in my world.

    I asked Dan Kyle the same question in 2013 and whilst I didn't write down what he said it was basically along the lines of 'the gas forks are more compliant and therefore track the surface of the road better but they are more expensive to run as rebuilds are required a lot more frequently than conventional forks'.

    I guess the question you'd have to ask yourself is "is the performance of my current fork set up limiting my lap times?" as it's a big cost differential for what could be a small gain in real terms.
     
  6. This is my theory too. Everyone I have seen using them have been unable to explain how they are different.
     
  7. They still sell though, so just goes to show, there's one born every minute !! o_O
     
  8. as i understand it gas pressurised forks work more consistently even when they get very hot under heavy track/race conditions.

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  9. Selling shiny things to people is the root of the modern economy, no?
     
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  10. It is true (I experience it) that suspension feel changes as the shocks warm-up. This is also noticeable with the steering damper as things get a little ‘waggly’ towards the end of a race.
     
  11. Yes cause the oil gets warm which then has a lighter viscosity
     
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  12. yes thats right as i understand it ,
    the oil and air also expands as it gets hotter which makes the damping characteristics change.
    gas pressurisation is designed to help overcome this to provide more consistent performance
     
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  13. How long are your races?
    I doubt under UK club races (10-laps (unless the axe-murderers have shoved each other in the hedge again, so usually 8)) would be worth it.
    JOOI what weight oil are you using? I run 2.5 weight in my 600 on the recommendation of my suspension fettler (who shimmed for that oil) on the basis of minimising reliance on viscosity
     
  14. Hasn't @RickyX got a set of Desmocedici D16RR forks on his 1098R ? The D16RR has that gas cannister thingy so perhaps he could shed some light on the subject. Andy
     
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  15. Nah, @RickyX just welded some baked bean cans to the standard forks.

    You know what he is like with his zany schemes and crazy ideas.
     
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  16. It's surprising how hot the oil gets very quickly; In July I took a bunch of shocks to characterise them on a shock dynamometer and was surprised at how quickly the oil reservoir became hot to the touch - in just a few minutes - and the dyno wasn't going 'bat shit'.

    A simple test to see how much you're heating your oil is to just grab hold of the oil reservoir when you come in from a session.

    FWIW I run 5W in my forks.
     
  17. id love some d16 forks on my 1198 :D
     
  18. I'd like a complete D16RR but that's as unlikely as getting a set of D16RR forks for my 1098R :(. Andy
     
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  19. That sounds interesting. What were the results? What do you do for a living?
     
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