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
Extreme Risk (Star Trek: Voyager) Extreme Risk (Star Trek: Voyager) "Extreme Risk" is the 97th episode of the science fiction television series "", the third episode of the . A probe launched by the Federation starship "Voyager" is stuck in the atmosphere of a gas giant planet; because of the value of the resources it has collected, the crew attempts to come up with solutions to recover the probe. Lt. Tom Paris presents the designs for a specialized shuttlecraft, the "Delta Flyer", that he has been designing over the past few months that would be able to withstand the gas giant's atmosphere. The rest of