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*.rc4 – JSON-based file format for storing rattleCAD 4.x bike design projects and templates. SVG – for import, export drawings and docs, and as a bicycle parts libraries files (CAD blocks). HTML – for export project report as a webpage (with a project file and a set of drawings in SVG) ready to publish on own website.
Dutch roundabout. CROW Design Manual for Bicycle Traffic is a publication on bicycle transportation planning and engineering in the Netherlands.It is published by CROW, a non-profit agency advising Directorate-General for Public Works and Water Management formerly Ministry of Transport and Water Management (Netherlands).
They manufacture and market bicycle chains and master links under their own KMC brand and supply them to others, including Shimano. [4] KMC chains are used in the Tour de France by riders such as Gustav Larsson, Swedish time trial champion. [5] KMC was founded by Charles Wu in 1977, [1] and was the largest bicycle chain manufacturer in the ...
e-bike Shimano Nexus 4 Speed 4 184% 1st gear City Shimano Nexus Inter-3: 3 187% 2nd gear 1220 g City SRAM Spectro E12 (Elan) 1995 1999 12 339% 3500-4000 g City SRAM i-Motion 9: 2005 2012 9 340% 2000g (w/o brake)-2400g (with coaster brake) City SRAM G8: 2012 2015 8 260% 2088-2180 g [16] [17] City SRAM G9 2014 2015 9 292% 2088 g [17] City, Sport
Chainstay: a pair of tubes on a bicycle frame that runs from the bottom bracket to the rear fork ends; Chain tensioner: a device to maintain proper chain tension; Chaintug: a device to aid in setting the proper chain tension; Cluster: a bicycle cogset, either a freewheel, or cassette
In the case of bicycle chains, it is possible to modify the overall gear ratio of the chain drive by varying the diameter (and therefore, the tooth count) of the sprockets on each side of the chain. This is the basis of derailleur gears. A multi-speed bicycle, by providing two or three different-sized driving sprockets and up to 12 (as of 2018 ...
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Chainline on a fixed-gear bicycle. The chainline is the angle of a bicycle chain relative to the centerline of the bicycle frame. [1] A bicycle is said to have a perfect chainline if the chain is parallel to the centerline of the frame, which means that the rear sprocket is directly behind the front chainring. [1]