UPDATE: Recent research has shown that Gary Fisher Level Betty frames all had interchangeable URT swingarms. Likewise, the Trek Y bikes used a similar interchangeable URT swingarm, however the Trek URT swingarm has different dropouts and this Fisher adapter is not compatible with Trek Y bikes. A Trek swingarm can be used on a Fisher bike, and vice versa, but this adapter only works with the Fisher URT, as pictured.
1998-99 Gary Fisher URT Frameset Disc Brake Adapter
Designed to work with:
1999 Gary Fisher Level Betty, All models
1999 Gary Fisher Joshua, All models
1998 Gary Fisher Level Betty, All models
Have a Fisher Level Betty or Joshua? Want to run rear disc but cant find an old 22mm style brake caliper?
Now you can run a modern ISO standard disc brake with minimal mod to your frame!
This adapter is far more rigid than the cheesy A2Z plate steel ones that mount to the 22mm mount--much more surface area in contact with the frame and dropout means less deflection in heavy braking situations.
Mount the adatper to the dropout by first clamping the adapter in place with the wheel and quick release. Then mark the center of the 3 mounting holes on the dropout.
Next use a 3.6mm drill-bit to pre-drill being careful to remain centered and square when drilling. Then use a M4 tap to thread the three mounting screw holes in the dropout.
Finally, fasten the adapter to the frame using three M4x12 countersunk socket head stainless screws backed with nylon insert, stainless, lock nuts and you're ready to mount your modern ISO disc brake
Calculated Weight in 3D Printed in Stainless Steel is 65 grams (not including mounting screws).
Tweeted by Gary Fisher HIMSELF!
OMG!! Thanks for installing Fox RT @slackard: hey check out my 53mph Classic Fisher Level Betty SE Ebike w/retrofits http://t.co/yZnYZSYH
— Gary Fisher (@Gary_Fisher) December 15, 2012
Important Notice: Older Joshua and Trek Y frames did not have the same rear triangle as the 1999 models. If you are not sure about the year of your bike, compare your dropout to the one pictured above. The 1999 Joshua (and 98 Level Betty) frames all had the old style Hayes 22mm disc mount, with two mounting holes on the chain stay, forward of the axle. If your frame has a different dropout than the one pictured, your frame is too old and would require a unique adapter (send me photos and I can accommodate).
Absolutely no warranty or guarantee. Buyer / user assumes any and all liability. Enjoy at your own risk!