I've had a tandem for over 30 years and my drag brake is an Arai drum. It has been controlled by a Suntour bar on until recently and it is now controlled by a Suntour thumbshifter.
In many years of tandeming, with numerous different stokers, it is my humble opinion that it is asking a lot of a stoker to be attentive 100% of the time so they can apply the drag/emergency brake. For a dedicated tandem team that always rides together and the stoker is always attentive, things may be different. My personal experience is to communicate bumps and intentions to the stoker but to handle all the controls for the sake of safety. I wonder if a barcon pulls enough cable for a disc? Ray Vallejo CA -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.