Originally Posted by Lost Coyote
Avid Ball Bearing Mechanical Disk Brake (160mm for road)
Chris King hub (28 spoke so I can keep my Bontrager Race Lite Tandem rims)
Winwood carbon cyclocross fork.
I came across a Santana the other day which had this exact set up with the exception of they had opted to use both V brakes and Disk on the front (via cable splitter). For some reason they had never run the disk alone which I plan to do. Due to the lack of mounting brackets on my chain stays I plan on keeping the Paul’s V brakes in the rear.
Any comments, or suggestions?
If you are determined to use this set-up (Beta testing as it were) ...
1. Contact Winwood and verify the Muddy Cross Fork is suitable for your total bike/team weight.
6400 West 105th Street
Bloomington, MN 55438-2254
2. Buy a locking front skewer. The name of the manufacturer escapes me at the moment but they do exist; MTBTandems.com has them in stock and sells them. Make sure your front wheel skewer is always affixed properly and checked often as the drop-outs on this fork do not appear to have the orientation of the wheel opening optimized for a disc brake application.
3. Recognize that your stock fork had 55mm of rake and this one has only 45mm. Thus, you will end up with more steering trail and a tandem that handles more like a Co-Motion than your original Trek or a Santana with a stock fork.
4. Contact Avid and see if they can sell you a Road model caliper with a mounting adapter that will allow it to work with a 203mm front disc rotor vs. the stock 160mm model.
5. Buy an off-set Ritchey or Velocity Fusion OC rim that is designed for front disc brake installations; it will correct the front wheel dish to ensure you have the strongest wheel possible and while you're at it, use a hub/rim combination with 36h spoking for increased durability / longevity.
If you want a tandem-specific front disc installation that will afford you a greater degree of safety margin contact:
a. Steve Rex of Rex Cycles http://www.rexcycles.com/home.html
b. Dennis Bushnell of Bushnell Cycles (Email: BushCycles@aol.com
), or perhaps
c. Bob Davis at ariZona Tandems http://www.arizonatandems.com
Steve & Dennis have both been fabricating tandem-rated 700c, front disc compatible steel forks for clients. They mount the caliper on the front right fork to mitigate issues with the fork drop-out orientation. The forks are not excessive in terms of weight -- I believe they are as light or lighter than most stock steel tandem forks -- and incorporate a more robust leg/crown design. You can also specify your fork off-set to either replicate your stock fork's geometry or reduce it to give your tandem a more lively feel and better high speed cornering characteristics. The overall cost will not be much more than what you've already planned to spend. If you want to incorporate a front rim brake a hole can be added for a front brake arch. Bob Davis has been experimenting with both modified Steel Canitlever brake forks and Wound-Up's Carbon fork & discs. As far as I know, he is the only builder offering a disc-compatible carbon fork. There are a few retro-fitted Cannondales running around with them in addition to his own Zona tandems.
Just my thoughts, as requested.
Last edited by livngood; 04-02-04 at 12:17 PM.