Mountain Hardwear Ghost Sleeping Bag: -40 Degree Down Black Reg/Left Zip

Mountain Hardwear Ghost Sleeping Bag: -40 Degree Down Black Reg/Left Zip In the past two years you've probably been just as frustrated as us with the slow crawl that's been 700c disc wheel progression. - Prior to the HED Ardennes FR Disc Tubular you could only check one of two boxes on your wish list -- either disc ready and clincher or tubular and non-disc compatible. - However HED being the constant innovator has finally delivered both in one wheel. - Now you can race till your heart's content while enjoying the power of disc brakes and the speed of tubular tires. - At last. - To keep the wheel weight around 1560 grams HED constructed the Ardennes FR Disc Tubular from the lightweight scandium material. - And in the Ardennes tradition it still features HED's proprietary C2 technology -- representing the two Cs of speed Crr and Cda standing for the coefficient of rolling resistance and aerodynamics respectively. - With these two principles in mind HED designed the Ardennes to create a more efficient interface with the tire resulting in a 22mm width at the brake track. - This wider-is-better technology isn't a bunch of marketing smoke and mirrors however. - It directly results in an 18% reduction to rolling resistance and a massive gain to laminar airflow over the 25mm rim depth of the wheels. - Additionally for 'cross purposes the 22mm width creates more surface area to glue onto creating a more stable surface for tight cornering and rugged terrains. - HED didn't rest on its laurels when it finished the rim. - In fact the entire wheel has been reworked. - The spokes are Sapim's popular and aerodynamic CX-Ray J-Bend spokes with self-securing aluminum nipples. - Both wheels use 24 of them and each have been laced two-cross for strength responsiveness and rigidity. - The Ardennes FR Disc has also received new hubs to accommodate rotors -- obviously. - So the venerable Sonic FR Hubs have been redesigned to handle the new variance of torque and stress caused by its centerlock rotor design. - The new hubs run on ABEC5 bearings with oversized 12 and. -. -. -Bike>Bike Parts>Wheels>Road Bike Wheels>Road Bike Tubular Wheels600 More Details click ******************************************************