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Thread: Disc's

  1. #1
    Mitcholo CrimsonKarter21's Avatar
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    Disc's

    What are you guys using? I'm thinking of switching teams, and my goal next year is Top 3 in 2008 nat's. My current team has Zipp disc's that I really like, the other team, however, is a much better organized team, but doesn't have disc's and the owner says that disc wheels are mainly hype, and that I can do the same performance with aero rims.
    So, I might have to pay for my own disc's, but I do get them at very handsome prices. What are you guys running, who makes the best bang-for-the-buck, and how would a set of 808 track wheels compare?

    Discuss.

  2. #2
    Run What 'Ya Brung bonechilling's Avatar
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    I'm curious about this too. I could really use the money from selling my disc and tri-spoke, and I've seen Rolf and a few other aero wheels selling for so cheap lately, that I can't help but wonder if I'd get the same basic effect for a whole lot less money.
    Quote Originally Posted by doofo View Post
    the main cause of fit problems is riding your bike

    you should have just stopped riding so you could focus on color coordination

  3. #3
    Mitcholo CrimsonKarter21's Avatar
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    Well, right now, I'm looking for cross-section pictures of disc's. If I can find some lightweight foam that hardens quickly, and can be sanded or shaped, I could make my own carbon fairing to go over a lighter-weight spoked wheel.

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    Run What 'Ya Brung bonechilling's Avatar
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    You're one industrious track racer.
    Quote Originally Posted by doofo View Post
    the main cause of fit problems is riding your bike

    you should have just stopped riding so you could focus on color coordination

  5. #5
    Senior Member Dubbayoo's Avatar
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    Mavic Comete/IO combo or Zipp 808s

  6. #6
    Mitcholo CrimsonKarter21's Avatar
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    Quote Originally Posted by bonechilling View Post
    You're one industrious track racer.
    Thanks, I'm going to be working with composites in college, so I might as well try something so I have some experience.

    Quote Originally Posted by Dubbayoo View Post
    Mavic Comete/IO combo or Zipp 808s
    Kind of different wheelsets. One is $5000, the other is half of that and has spokes. Anyways, I've been meaning to talk to my Mavic Guy and see if he's got either one of those for a good price, but I'm a little down on money right now.

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    Quote Originally Posted by CrimsonKarter21 View Post
    Well, right now, I'm looking for cross-section pictures of disc's. If I can find some lightweight foam that hardens quickly, and can be sanded or shaped, I could make my own carbon fairing to go over a lighter-weight spoked wheel.
    you could make a full wheel if you do something along the likes of Renn - http://rennmultisport.com/technical/technical.shtml
    Flat cross section, center a hub and a rim, fill in everything else.

    To anchor the hub you could use threads through a hub's spoke holes (prevent windup etc - I think a Parlee TT bike had some such wheel on it). Or if you're old school sort of like the Tioga disc wheel (32H compatible sides which replaced spokes in a wheel - truable etc).

    if things work out I'll buy a wheel from you

    cdr

  8. #8
    Mitcholo CrimsonKarter21's Avatar
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    Thanks for the Renn website. But I'd have no clue as to how to make sure that the hub is properly centered, remember, this is a bicycle wheel, where you can notice .4mm of hop in a rim. But I do understand that making the actual disc could go pretty smoothly, and by adding a cosmetic layer of very light non-structural 1K carbon, I could put dimples into it.
    Another thing is how will I get a hub designed like the one Renn uses?
    I do have a machine shop in my school that might be able to make a decent-quality hub with one high flange, and a removable flange on the other side that bolts to the hub body and then to the disc.

    I'll try to get some ideas out there, and I might be able to make some this winter and spring or something.

  9. #9
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    hub goes in first and you spin it to shape.

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    http://owl.english.purdue.edu/handou...r/g_apost.html

    Not that I want to be seen as a grammar Nazi or anything...

  11. #11
    Mitcholo CrimsonKarter21's Avatar
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    Okay, I think I've got a pretty good design going on. I've got a basic design of a hub made out, I'm going to make the drive flange pretty high and have a 12 bolt pattern, and a removable, bolt-on flange for the non-drive with a 6-bolt pattern.
    The carbon should run me in the $150 range, plus epoxy.
    Getting the hub machined out should be pretty easy, all of the hub internals will be Dura-Ace 7700.
    And making the disc dimpled should be super-easy.

    The only thing that remains before starting is the foam. Does anyone have an idea of a good foam that's very, very rigid? I'm thinking marine stuff, anyone?

  12. #12
    Senior Member taras0000's Avatar
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    try carving foam, it's rigid, easily shaped (you can carve it with a knife), and should be available at art stores, or even hobby shops that specialize in RC airplanes.
    Taras - :noun. 1. Typically an overweight has-been that can sometimes be seen pootling around a velodrome on an old Look KG 233.

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    Not that I doubt your skills or anything, but how are you going to be sure that your disc is safe? Especially for racing?

  14. #14
    Senior Member mezza's Avatar
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    Just tape cardboard over your regular wheel...
    Do you own or run a small/medium business in Australia?
    Grow your business GUARANTEED* www.jumpglobal.com.au

  15. #15
    Mitcholo CrimsonKarter21's Avatar
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    Quote Originally Posted by Yoshi View Post
    Not that I doubt your skills or anything, but how are you going to be sure that your disc is safe? Especially for racing?
    I'm going to race it. Duh.

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