Shimano disc brake systems are not compatible with tandem bicycles.
Because tandem bicycles have a high overall weight, the load on the brake system increases during brake operation. If hydraulic disc brakes are used with tandem bicycles, the oil temperature will become too high and vapor locks or ruptures in the brake hoses may occur, and this will cause the brakes to fail.
WARNING - This braking system was designed for use on a single rider bicycle. Use of this system on any other vehicle or apparatus will void the warranty and possibly causing you great personal harm and injury.
SRAM
I couldn't find anything on SRAM's site on weight limits or exclusions for tandems on the SRAM website.
Hope Tech
I couldn't find exclusions for tandem's on Hope Tech's website.
BB7's are the devils work (road version, MTB version is fine).
Some info:
Shimano
http://si.shimano.com/php/download.p...008-00-ENG.pdf
Shimano disc brake systems are not compatible with tandem bicycles.
Because tandem bicycles have a high overall weight, the load on the brake system increases during brake operation. If hydraulic disc brakes are used with tandem bicycles, the oil temperature will become too high and vapor locks or ruptures in the brake hoses may occur, and this will cause the brakes to fail.
TRP
HYRD
http://www.trpbrakes.com/userfiles/f...%20Rev%20B.pdf
The HYRD brake system is an open hydraulic brake designed for
use on single rider bicycles.
Helix
http://www.trpbrakes.com/userfiles/f...%20A070213.pdf
WARNING - This braking system was designed for use on a single rider bicycle. Use of this system on any other vehicle or apparatus will void the warranty and possibly causing you great personal harm and injury.
SRAM
I couldn't find anything on SRAM's site on weight limits or exclusions for tandems on the SRAM website.
Hope Tech
I couldn't find exclusions for tandem's on Hope Tech's website.