73:, providing better ground clearance. For example, a bike using a 32-tooth chainring with a 16-tooth rear sprocket can switch to using an 18-tooth chainring and a 9-tooth sprocket, and still have a 2:1 ratio. Another advantage is the reduction in weight with the reduction in size of all the parts.
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Smallest rings and gears: by reducing the diameter of the chainring bolt circle diameter on the crank arm, SUNTOUR is able to replace the standard 46/ 36/24 (or 48/28/28) with a compact 42/32/20 on the front
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The disadvantage is increased stresses on the drive train, leading to increased wear and even premature failure. As the front and rear sprockets become smaller, the tension in the
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Some examples of micro drive hubs are
Shimano Microspline (12-speed, 10-teeth) and SRAM XD/XDR (11/12-speed, 9-teeth).
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and breaking can occur more easily. Designers can overcome these issues by choosing materials with higher
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body is a 10 or 11-tooth, but with the use of a cassette hub, sometimes called a micro drive rear
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The advantage of micro drive is that it means a smaller front sprocket, or
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This article is about the bicycle drive train. For other uses, see
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Currently with a cassette hub you can run as small as an 8t cog.
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116:"Suntour Components Catalog 1992: MD (Micro Drive Design)"
61:Reduced weight and increased ground clearance
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18:Microdrive (disambiguation)
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121:. The Bicycle Info Project
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144:"Wheels / Hub Tech Help"
77:Increased wear and costs
42:. The smallest rear
174:Bicycle drivetrains
146:. Dan's Competition
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131:chainrings.
24:Micro drive
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125:2011-08-18
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67:chainring
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48:freehub
119:(PDF)
83:chain
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36:MTB
32:BMX
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