Also, instead of using a threaded bearing cap to achieve bearing load, the threadless headset uses a top cap that pushes the stem (and stem spacers) against the top race of the headset to load the bearings. Installing headset bearing cups requires the use of a special headset press tool. • Slide the top cup onto the upper race of the headset press, and insert the headset press through the top of the head tube.
The benefits of an integrated seat mast are lower weight, increased stiffness, the possibility of aerodynamically shaped seat masts, and a striking aesthetic appeal. The downsides are difficult to travel with (fitting the frame and seat mast in a bike bag or box), loss of resale value if seat mast is cut, and increased cost. When working with a bike with an integrated seat mast, it’s important not to clamp the seat mast in a work stand unless an adaptor is provided by the frame’s ...
Exactly the same as a mechanical rear derailleur, the Di2 rear derailleur mounts directly to the derailleur hanger using a 5-millimeter Allen wrench. The front derailleur mounts to the frame in the same manner as a mechanical front derailleur but also uses a small post bolt that butts against the seat tube to provide extra stability because the servomotor is quite strong. The cables that run to the front derailleur, rear derailleur, and the battery mount may be quite long.
Hit the road with confidence knowing that you can handle emergency bike repairs. Emergency Bike Repair lets you hit the road with confidence knowing that you can handle all common—and even some not-so-common—emergency bike repairs. Featuring easy repairs for clinchers, tubeless tires, tubular tires, troublesome derailleurs, and handlebar alignments, Emergency Bike Repair gives you everything you need for worry-free cycling.
The combination of mechanical principles with human anatomy allows you to understand sport mechanics. In sport, mechanical principles are nothing more than the basic rules of mechanics and physics that govern an athlete’s actions. If you understand the mechanical principles governing the techniques of your sport, you’ll understand why young athletes, who are growing quickly have a tougher time maneuvering, changing direction, and coordinating their movements than more mature athletes do.