Advertise on Bikeforums.net



User Tag List

Results 1 to 9 of 9
  1. #1
    Senior Member
    Join Date
    Dec 2008
    Posts
    64
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Disc brake adaptor/conversion help

    Hello All...

    I have a 2004 Gary Fisher Tassajara that I would like to convert to disc brakes. I am pretty sure I need the adapter shown in the photo below but I have no idea where to purchase.

    Any ideas? Any alternatives?

    Thanks for you help!
    Attached Images Attached Images

  2. #2
    Senior Member
    Join Date
    Sep 2004
    Location
    boston, ma
    Posts
    2,825
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    ebay search trek adapter or gary fisher

  3. #3
    Gear Hub fan
    Join Date
    Nov 2008
    Location
    Reno, NV
    My Bikes
    Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
    Posts
    2,830
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If it is original to the bike it is on in the photo then check with a Trek dealer as to whether they can obtain it. From the photo it does appear that it uses a non standard mounting bolt hole on the dropout above and slightly forward of the rear axle so will likely require some precision drilling of your dropout.

    Remember that for a disc brake conversion you will also need new or rebuilt wheels and if you want to do the front too a new fork may well be required. Such a conversion on a bike not designed for disc brake mounting gets expensive.
    Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro

    Visit and join the Yahoo Geared Hub Bikes group for support and links.
    http://groups.yahoo.com/group/Geared_hub_bikes/

  4. #4
    Senior Member BCRider's Avatar
    Join Date
    Mar 2008
    Location
    The 'Wack, BC, Canada
    My Bikes
    Norco (2), Miyata, Canondale, Soma, Redline
    Posts
    5,432
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'll echo the expensive part. Seriously, price out how much ALL of the parts you get will cost and then sit down and figure out what you could get for selling your Tassajara. If the difference in cost between selling your bike and buying a similar quality new(er) bike with discs already on it is less or even the same price then go for it.

    And I'm pretty sure once you add up all the stuff that selling the Tassajara and getting a new(er) bike is going to end up less expensive. Probably a LOT less expensive. Espeically if you have to pay a mechanic to do the work.
    Model airplanes are cool too!.....

  5. #5
    I have senior moments... bikinfool's Avatar
    Join Date
    Oct 2008
    Location
    Woodside, CA
    My Bikes
    Many
    Posts
    2,153
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I think I've read Trek/GF no longer supplies that part, but they are available on ebay http://shop.ebay.com/?_from=R40&_trk...All-Categories like reptilezs suggested. $35 for the adapter and $100 for a set of BB7s you could use the current levers with isn't all that much money...
    suum quique
    Mountain bikes: Santa Cruz Hecklers (99, 02, 07), Santa Cruz Nomad, Moots YBB, Trek OCLV Pro Issue, American Breezer
    Road bikes: TST, Trek 2300 (Carbon/Alum)

  6. #6
    Gear Hub fan
    Join Date
    Nov 2008
    Location
    Reno, NV
    My Bikes
    Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
    Posts
    2,830
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bikinfool View Post
    I think I've read Trek/GF no longer supplies that part, but they are available on ebay http://shop.ebay.com/?_from=R40&_trk...All-Categories like reptilezs suggested. $35 for the adapter and $100 for a set of BB7s you could use the current levers with isn't all that much money...
    Plus new disc compatible hubs with wheel rebuilding costs, or a full disc compatible wheel set, and probably a new disc compatible front fork. A proper disc conversion of a bike not originally designed to take disc brakes is not a easy or cheap project.
    Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro

    Visit and join the Yahoo Geared Hub Bikes group for support and links.
    http://groups.yahoo.com/group/Geared_hub_bikes/

  7. #7
    I have senior moments... bikinfool's Avatar
    Join Date
    Oct 2008
    Location
    Woodside, CA
    My Bikes
    Many
    Posts
    2,153
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by tatfiend View Post
    Plus new disc compatible hubs with wheel rebuilding costs, or a full disc compatible wheel set, and probably a new disc compatible front fork. A proper disc conversion of a bike not originally designed to take disc brakes is not a easy or cheap project.
    Depends on what you've got lying around, too...and then again I'm spoiled and like to build wheels, so that's a way of keeping expenses down on conversion as well. There are some bikes with disc ready wheels, too, OP really didn't say what he's up to in any case. That frame is designed for disc brakes, just a goofy mount. Hopefully his fork is suitable, too.
    suum quique
    Mountain bikes: Santa Cruz Hecklers (99, 02, 07), Santa Cruz Nomad, Moots YBB, Trek OCLV Pro Issue, American Breezer
    Road bikes: TST, Trek 2300 (Carbon/Alum)

  8. #8
    Senior Member
    Join Date
    Dec 2008
    Posts
    64
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Thanks!

    Thanks for the input folks.

    I did find a possible ebay solution to the mounting problem.

    Turns out that I was able to pick up a REALLY nice used wheelset on Craigslist with discs already fitted. I know it might be cheaper to shop for a new bike but I love the frame (we have covered many miles together) and don't want to have to find a new bike if I can avoid it. I am a strange shape and the frame just feels "right".

    Same Craigslist seller also has a set of affordable hydraulic disc brakes so I am contemplating those although of course the Tass frame is designed for partial housing so not sure if hydraulic would work for me.

    As always....this forum is a fantastic resource!

  9. #9
    I have senior moments... bikinfool's Avatar
    Join Date
    Oct 2008
    Location
    Woodside, CA
    My Bikes
    Many
    Posts
    2,153
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You can always work the hose routing out, zip ties can work wonders, there are also fittings that you can put in your cable stops (although may not be the most aesthetically pleasing). "Affordable" hydraulic disc brake? Which one?
    suum quique
    Mountain bikes: Santa Cruz Hecklers (99, 02, 07), Santa Cruz Nomad, Moots YBB, Trek OCLV Pro Issue, American Breezer
    Road bikes: TST, Trek 2300 (Carbon/Alum)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •