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The left and right crank arms speed up and slow down independently, relative to the chainrings during the pedalling cycle. The mechanism causing this is designed by ofsetting the axis of rotation of the crank spindle and spider, then connecting the spider to the individual crank arms via two independent links.
Rotor 155mm Crankset. Shimano Dura-Ace 160mm Crankset. Shimano Ultegra 160mm Crankset. Shimano 105 12-speed 160mm Crankset. SRAM Red 160mm Crank Arms. SRAM Rival 160mm Crankset. SRAM Apex 1x 160mm ...
With a one-piece (also called Ashtabula) crank and bottom bracket, the spindle and crank arms are a single piece. The bottom bracket shell is large to accommodate removal of this S-shaped crank. Bearing cups are pressed into the bottom bracket shell. The crank holds the cones, facing in; adjustment is made via the left-threaded non-drive side cone.
Toolbag: Tool bags are often made of heavy canvas and leather. Some tool bags have a hinged steel frame around the opening. This allows the bag to stay open when in use. Many tool bags have pockets on the inside and or outside. They usually include handles and sometimes shoulder straps. Tool bags often have a firm, reinforced bottom panel.
All tools assigned to the same tool class are suitable for the same task, but they have different sizes. The tool classes are organized in a tree, which is adapted and expanded by the user. The tool types with the corresponding images describe the required geometric values and where they are measured. Each tool type is assigned to a class list ...
A crank is an arm attached at a right angle to a rotating shaft by which circular motion is imparted to or received from the shaft. When combined with a connecting rod, it can be used to convert circular motion into reciprocating motion, or vice versa. The arm may be a bent portion of the shaft, or a separate arm or disk attached to it.
Campagnolo crank spanner, used to tighten or loosen the bolt (15 mm) which holds the crank to the bottom bracket spindle. Length is 17 cm. A peanut butter wrench, also known as a crank bolt spanner or a crank spanner, is a single-ended box wrench or ring spanner used in cycling to tighten older 14 mm and 15 mm crank bolts, or the wheel nuts (track nuts) on hubs with solid axles commonly found ...
Hirth joint made from anodized aluminum to show the meshing of the teeth Hirth joint (disassembled) between the semi-axles of a Campagnolo Ultra-Torque crankset. A Hirth joint or Hirth coupling is a type of mechanical connection named after its developer Albert Hirth. It is used to connect two pieces of a shaft together and is characterized by ...