Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 01-18-10, 09:43 PM   #1
scouse
Senior Member
Thread Starter
 
Join Date: Dec 2008
Bikes:
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(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
File Type: jpg trek_adapter-vi.jpg (70.9 KB, 49 views)
scouse is offline   Reply With Quote
Old 01-18-10, 09:58 PM   #2
reptilezs
Senior Member
 
Join Date: Sep 2004
Location: boston, ma
Bikes:
Posts: 2,852
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
ebay search trek adapter or gary fisher
reptilezs is offline   Reply With Quote
Old 01-18-10, 10:11 PM   #3
tatfiend 
Gear Hub fan
 
Join Date: Nov 2008
Location: Reno, NV
Bikes: Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
Posts: 2,830
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(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/
tatfiend is offline   Reply With Quote
Old 01-18-10, 11:59 PM   #4
BCRider
Senior Member
 
BCRider's Avatar
 
Join Date: Mar 2008
Location: The 'Wack, BC, Canada
Bikes: Norco (2), Miyata, Canondale, Soma, Redline
Posts: 5,456
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(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.
BCRider is offline   Reply With Quote
Old 01-19-10, 03:33 AM   #5
bikinfool
I have senior moments...
 
bikinfool's Avatar
 
Join Date: Oct 2008
Location: Woodside, CA
Bikes: Many
Posts: 2,152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(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...
bikinfool is offline   Reply With Quote
Old 01-19-10, 06:22 PM   #6
tatfiend 
Gear Hub fan
 
Join Date: Nov 2008
Location: Reno, NV
Bikes: Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
Posts: 2,830
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(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/
tatfiend is offline   Reply With Quote
Old 01-19-10, 06:52 PM   #7
bikinfool
I have senior moments...
 
bikinfool's Avatar
 
Join Date: Oct 2008
Location: Woodside, CA
Bikes: Many
Posts: 2,152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(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.
bikinfool is offline   Reply With Quote
Old 01-22-10, 05:59 PM   #8
scouse
Senior Member
Thread Starter
 
Join Date: Dec 2008
Bikes:
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(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!
scouse is offline   Reply With Quote
Old 01-22-10, 06:04 PM   #9
bikinfool
I have senior moments...
 
bikinfool's Avatar
 
Join Date: Oct 2008
Location: Woodside, CA
Bikes: Many
Posts: 2,152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(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?
bikinfool is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 02:52 AM.