Well I am in the final phases of my mental design for a trike of my own design. This is something I hope to do some touring in so reliability is important, as well as simplicity. Most of the recumbent trikes I have seen have brakes on both front wheels and none on the back. Not only does that add some complexity of construction, it means you have to grab both brakes evenly to get a straight stop. Though I did it for years with my feet in another machine, its something I'd rather avoid if I could. Yet this bike will be heavy enough that without some kind of modification of the standard road bike rim brakes, if there is only one brake on the rear wheel, it might not be enough stopping power, though it would be safer in many ways. Now I have an idea. If I cut a piece of steel in the shape of the rim and put holes in it so I could mount more than one brake pad per side, I should be able significantly increase the stopping power of the rear brake and not have to deal with front brakes at all. Even better would be a disk brake system on the back, but that would probably break the budget on brakes. Anyone ever seen a system like this? Any ideas of whether it should work or not work? Any input is appreciated.