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Bicycle chains Roller chain and sprocket. A bicycle chain is a roller chain that transfers power from the pedals to the drive-wheel of a bicycle, thus propelling it.Most bicycle chains are made from plain carbon or alloy steel, but some are nickel-plated to prevent rust, or simply for aesthetics.
Roller chain and sprocket The sketch of roller chain, Leonardo da Vinci, Codex Atlanticus. Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles.
The tank suspension was composed of 17 twin small diameter rollers, an idler at the front, and rear driving sprocket. The 1st and 17th road wheels had individual suspension, the three middle rollers connected to the common carriage, and the remaining pairs were in 6 bogies. To facilitate the management of the tank, as in the case of TG, Grote ...
Camouflaged firing positions 15 metres (49 ft) long, 10 metres (30 ft) wide and 3 metres (10 ft) deep had to be dug for each howitzer to minimize Soviet counter-fire before they could move into position. On 20 May 1942 the 11th Army reported all three Karl-Geräte were at the front with a total of 72 heavy and 50 light concrete-piercing shells ...
The BT tanks were "convertible tanks". This was a feature that was designed by J. Walter Christie to reduce wear of the unreliable tank tracks of the 1930s. In about thirty minutes, the crew could remove the tracks and engage a chain drive to the rearmost road wheel on each side, allowing the tank to travel at very high speeds on roads.
16 tooth sprocket. Do = Sprocket diameter. Dp = Pitch diameter A sprocket and roller chain. A sprocket, [1] sprocket-wheel [2] or chainwheel is a profiled wheel with teeth that mesh with a chain, rack or other perforated or indented material. [3] [4] The name 'sprocket' applies generally to any wheel upon which radial projections engage a chain ...