Do I need a 'dork disc'?

Discussion in 'General Bike Discussion' started by HandsomeRyan, Feb 2, 2010.

  1. HandsomeRyan

    HandsomeRyan ♥'s Bicycles

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    I'm having a new rear wheel built for my tandem and although it's only a 7 speed I've opted to get a new hub with a 9 speed freehub body [to allow future upgrades]. I know I'll need a spacer to make a 7 speed cassette work but do I also need a 'dork disc' to prevent spoke carnage if my cheapo derailleur overshoots the innermost gear? If I do need one, where should i find one? I saw some on eBay but is this the kind of thing my local bike shop should be able to hook me up with, and what should i be looking to pay?

    Any advice is welcome as I'm kind of pretending here; I really don't know much about various drivetrain components and jumping into this is my method of learning.

    Thanks in advance.

    Dean- I didn't see a "Mechanics" forum, is this the best place to post this?
     
  2. Industry_Hack

    Industry_Hack Total noob (& forum admin) Admin Staff Tavern Member

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    A properly adjusted derailleur should prevent accidents, but if you're worried, get the disc.
     

  3. Doohickie

    Doohickie Older than Hack

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    No you don't need a dork disc.
     
  4. BlazingPedals

    BlazingPedals Member

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    I think the new hub will require re-spacing the rear dropouts, too.
     
  5. HandsomeRyan

    HandsomeRyan ♥'s Bicycles

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    This tandem has 135mm rear spacing. Lucky for me since I'm poor and MTB stuff is cheaper than tandem specific 145mm and up spaced stuff.

    ___________________________________________

    I got a lead on an almost-free 9 speed cassette and so I may get a new shifter and derailleur and convert for 7 speeds to 9.
     
  6. wild

    wild Yesterday tired old man, Today retired old man

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    What makes this disc a dork :confused: ;):rolleyes:
     
  7. HandsomeRyan

    HandsomeRyan ♥'s Bicycles

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    It's friends with Brian. :p
     
  8. wild

    wild Yesterday tired old man, Today retired old man

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    There is a remark I did not expect :rolleyes::D
     
  9. Industry_Hack

    Industry_Hack Total noob (& forum admin) Admin Staff Tavern Member

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    Words hurt. :mad:

    I was going to tell you that if you continue to be a bully, I won't send those pedals. But I will send them anyway. I have most of my review done, with the exception of photos. My neighbor's kid was supposed to ride my bike while I took the photos, and he broke his ankle. Grrr.
     
  10. HandsomeRyan

    HandsomeRyan ♥'s Bicycles

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    [​IMG]

    Bullies pick on others to hide their own inadequacy. I'm just a timid little boy hiding behind a macho internet persona. [​IMG]