ATS Speed Drive Internal Gear Crankset 

 

This set is for Carryme, and the spacer is for Carryme chain line, 
If your carryme is after 2015, you DO NOT NEED to chamfer the bottom shall of your frame.
If your carryme is before 2015, please check the frame, this set needs the chamfered frame.



The ATS Speed Drive is ideal for town bikes: single speeds, fixed gears, internal gear hub bikes, or bikes with only a single, rear, derailleur. The close 1.65 overdrive ratio means shifts can be made more often and more comfortably.  It's also great for small-wheeled bikes to get a larger gear ratio without a huge physical chainring.

 

Key specifications and features of the ATS Speed Drive include:

 

1.      1.65 overdrive ratio (similar to a front derailleur shift)

2.      Small physical chainring and larger effective chainring size in overdrive mode

3.      Close range well suited for use with single speeds, fixed gears, internal gear hubs, and rear derailleurs



ATS-speed drive - Internal geared crankset: 

SD-165H (Heel shift type): Gear ratio 165%, 

- With two gears: direct drive 1:1, overdrive 1:1.65

- Axle length : 136mm, for bottom bracket width 68mm.

- crank length : 160mm, 


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