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What's the best material to use for fork bushings?

Discussion in 'Downhill & Freeride' started by ChrisRobin, Sep 26, 2005.

  1. ChrisRobin

    ChrisRobin Turbo Monkey

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    I've just been checking out a lot of online 50cc bike parts sites and a lot of their bushing kits are made from delrin. How does delrin as a material compare to what they use in RockShox or Marzocchi bushings?(they use nylon or something?) Is it a question of what the stanction tubes are made of: aluminum vs. steel?

    ...mostly a question of curiosity.
     

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  2. vitox

    vitox Turbo Monkey

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    normally steel or aluminum backed bushings are used, with some sort of antifriction (teflon-ish to my knowledge) coating

    delrin is a plastic that deforms more than metal and i also think its got worse properties when it comes to moisture absortion, read: hanebrink
     
  3. buildyourown

    buildyourown Turbo Monkey

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    Delrin is a pretty lousy bushing material. It deforms easily and it wears fast in the presence of dirt.
    Most highend forks use a split aluminum bushing with an anti-friction coating on the business side.
     
  4. kidwoo

    kidwoo Celebrating No-Pants Day

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    I would think true teflon would be the goods since it's so smoove. Delrin is like the cheapo version. It deforms more partially because it's not as dense as teflon.
     
  5. bballe336

    bballe336 Turbo Monkey

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    delrin would be a good material except it will absorb oil and swell.
     
  6. dhkid

    dhkid Turbo Monkey

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    i thought most busings were ceramic coated?
     
  7. zedro

    zedro Turbo Monkey

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    nooo...that would eat your stanchions alive. You want a soft material that wears away.

    I'm pretty sure most bushings are aluminum backed bronze, it's pretty standard as a machine part so pretty cheap.
     
  8. lovebunny

    lovebunny can i lick your balls?

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    i heard they used flubber
     
  9. ChrisRobin

    ChrisRobin Turbo Monkey

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    All those 50cc bike forks are open oil...so I don't know how much they would absorb and swell.
     
  10. bballe336

    bballe336 Turbo Monkey

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    well from what i know they do. i play paintball and most high end guns come with delrin bolts (the part that strikes the ball) and these bolts cannot be exposed to any oil for the mechanical parts of the guns or they will swell and not slide forward in the chamber very easily. thats just my experience.
     
  11. ChrisRobin

    ChrisRobin Turbo Monkey

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    Ah ok...I'll have to look into it.
     
  12. kidwoo

    kidwoo Celebrating No-Pants Day

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    Yeah you're right.

    You can buy oil that's supposed to be made for swellin up yer seals.

    Gotta remember that when I'm 80.