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  1. #1
    Certified Bike Junkie
    Reputation: muddybuddy's Avatar
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    old GT 20mm hub with 4-bolt mount

    Any chance of getting this to work with a current brake set up? I don't have the specs, but the bolt circle looks larger that the 40mm 4 bolt that you can still get rotors for. I'm working on a GT project and thought it would be cool to have a GT hub as well, but I'm thinking this might be more trouble than it's worth. any info is appreciated.
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    Need: McMahon brake for roller cam mounts, Mountain Goat fork.

  2. #2
    29 some of the time...
    Reputation: AL29er's Avatar
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    I dunno, IMO it isn't worth the effort. GT loyalty is somewhat silly in that they most likely didn't even manufacture the hub. It is a cool piece of history, but most of the pre-IS disk brake parts are a major headache. If you have access to a machine shop and can fab rotors and adapters then it is a fun exercise. Otherwise you are better off sinking $50-90 on a modern 6-bolt hub.
    Quote Originally Posted by saturnine
    that's the stupidest idea this side of pinkbike.

  3. #3
    mtbr member
    Reputation: vk45de's Avatar
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    looks close to 80mm really
    Try
    http://www.bikewagon.com/3-Dollar-Bin/c120959-1-2/
    Good chance of finding old stuff here. I found pads for my system 11s there.

  4. #4
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    doesnt hope still make a 4 bolt rotor?

  5. #5
    Certified Bike Junkie
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    The only 4-bolt rotors I've been able to find have a 40mm bcd and this hub looks to be in the 80mm range. Thanks for the input.
    Need: McMahon brake for roller cam mounts, Mountain Goat fork.

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