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  1. #1
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    76er question with disk brake conversion follow up ?

    Greetings, hope this finds you all well.

    I have a 93 rockhopper (steel I think) set up ss with an eno.

    Two related questions: 1. can you run a 27.5 front wheel with this fork (rigid, steel I think), sort of a 76er.

    Since these new wheels seem to be disk brake centric, question 2. suggestions on getting a disk brake fitting attached/welded to the fork.

    Thanks.

  2. #2
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    No idea on the fork/tire clearance, get out a measuring tape.

    Retrofitting disk bracket onto a steel fork is possible if the fork is built study enough to handle the load. Danger is that poorly designed brackets added to a lightweight fork can result in bending the fork during braking. You need to have something like this paragon bracket brazed or TIG welded to the fork.
    www.paragonmachineworks.com - BK2009SteelISOCaliperMountWillits

    If you can even find a reputible local framebuilder willing to take it on, it will likely cost almost to have done and repaint as just buying a new cheap fork that already has a disk mount. You might also take a chance, buy the bracket yourself, mock-up the bracket position with a caliper, hub and rotor and then take it all to a generic welding shop and see if they are willing stick it together for you.

  3. #3
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    Thanks for your response and the link, will look into it. Good point about the measuring tape, being lazy I sometimes go the easy route and type out a question versus figuring out myself. Again, thanks.

  4. #4
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    I doubt that you'll be happy with a 650B on the front end of that bike. Most 26ers that do a front 650 conversion tend to run 20-30mm shorter of a fork to make up for the taller tire profile - basically to make the headtube in the same location relative to the ground despite having a taller tire underneath. With that old of a frame, it's already running a really short rigid fork so it'll be really hard to get one shorter to keep the frame geometry the same.

    Might be worth getting a new disc fork and running a really fat 26" tire instead. The difference between a 26x2.4 and skinny 650B tire is not as large as you'd think.

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