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A parts book, parts catalogue or illustrated part catalogue is a book published by a manufacturer which contains the illustrations, part numbers and other relevant data for their products or parts thereof. Parts books were often issued as microfiche, though this has fallen out of favour. Now, many manufacturers offer this information digitally ...
For example, the Variomatic system fitted as an option to the Jaguar 420 required only 2-7/8 turns of the steering wheel lock-to-lock, which compares favourably with 4-1/4 turns lock-to-lock for the manual Burman F.3 recirculating ball system that was standard fitment on the 420, and 3-1/4 [4] turns for the constant ratio Burman power steering ...
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 ...
In the case of road bikes, this is usually around 670 mm. A 700c "standard" wheel has a 622 mm rim diameter. The final wheel diameter depends on the specific tire but will be approximately 622 mm plus twice the tire width. Front/rear measurement only considers the sizes of a chainring and a rear sprocket. Gear inches and metres of development ...
In 1991, a two-wheel drive bicycle was marketed under the Legacy name. It used a flexible shaft and two bevel gears to transmit torque from the rear wheel, driven by a conventional bicycle chain with derailleurs, to the front wheel. [11] In 1994, Steve Christini and Mike Dunn introduced a two-wheel drive option. [12]
Before epicyclic gears were used in bicycle hubs, they were used on tricycles. Patents for epicyclic hubs date from the mid-1880s. [5] [6] The first patent for a compact epicyclic hub gear was granted in 1895 to the American machinist Seward Thomas Johnson of Noblesville, Indiana, U.S.A. [7] This was a 2-speed but was not commercially successful.
On some applications, the drive sprocket and idler wheel carry some of the weight of the vehicle, for the purposes of this description, we will assume the drive sprocket and idler wheel are not weight-bearing units, and the drive sprocket is on the front. Since the drive sprocket can be at either the front (many WWII tanks like the M4 Sherman ...
The oldest known illustration of an endless power-transmitting chain drive, from Su Song's book of 1092 AD, describing his clock tower of Kaifeng Sketch of pin-jointed chain by Leonardo da Vinci The oldest known application of a chain drive appears in the Polybolos , described by the Greek engineer Philon of Byzantium (3rd century BC).