Single-speed bicycle on the situation, a messenger may prefer a mountain bike based single-speed, which can roll over many obstacles, or a fast and light road bike-based single-speed. In the United States market, bicycle companies such as Bianchi, Cannondale, Fuji Bike, KHS, Kona, Raleigh, Giant, Specialized, Swobo, Felt, Trek and Niner all have produced and marketed single speed bicycles. Because most full suspension frame designs either have a single pivot that is not concentric with the bottom bracket, or a linkage with a variable center of rotation, the distance between the bottom bracket and rear axle varies throughout the suspension's travel. This
Edinburgh Bicycle Co-operative Edinburgh Bicycle Co-operative Edinburgh Bicycle Co-operative is a bicycle retailer with three stores across Scotland and two stores in Northern England, and an online store selling worldwide. The co-operative is the longest established worker co-operative in Scotland, having originally been founded as a bicycle repair service in Edinburgh in 1977. In recent years the co-operative has grown to be, arguably, the dominant bicycle retailer in Scotland, with the largest bicycle stores in each respective city. The business offers products from many leadings brands including Specialized, Whyte, Brompton, Kalkhoff, Frog and Giant. The longest established of all Edinburgh Bicycle Cooperative stores