Slidepad Brake System - How it Works
At Interbike, we test rode a Jamis commuter bike with a NuVinci 360 internal gear hub and another interesting component. The Slidepad allows you to use both brakes with just one lever. Here's more from slidepadbrake.com:
Slidepad consists of a guide and sliding brake pad designed to integrate into a v-brake arm. As the rear brake is applied from a single lever, the force from the rear wheel slides the pad forward. The forward force of the sliding pad pulls a cable to engage the front brake, alleviating the need for a front brake lever. The rotational force of the rear wheel automatically modulates the front brake, to ensure safe and smooth braking.
Look for Slidepads on several Jamis city bike models in 2013 as well as available separately for installation on most bikes with v-brakes.