Karl's visual drivetrain comparison tool

Compare two different bicycle drivetrains side-by-side. Supports any number of chainrings and cogs, as well as many popular internally-geared hubs. Results can be displayed as gear inches, metres development, or Sheldon Brown's gain ratios.

Drivetrain 1:

Crank:  (only used for gain ratios)
IGBB:
Rings:
Cogs:
IGH:
Tire:

Drivetrain 2:

Crank:  (only used for gain ratios)
IGBB:
Rings:
Cogs:
IGH:
Tire:

Options:

Units
Labels

cassette cog toothcount data

(somewhat deprecated; see below)

cassette cog toothcount lookup and comparison tool

(newer and fancier)


Internal Gearing Info

expand/collapse
Drivetrain 1:
Internally-Geared Hub
Shimano 3-speed Nexus (and SRAM/Sachs)
Total Range: 186.3%
Incremental range: 86.3%
Minimum primary gear ratio allowed: 0.000:1
1
0.730
2
1.000
3
1.360
37% 36%
Drivetrain 2:
Internally-Geared Hub
Shimano 3-speed Nexus (and SRAM/Sachs)
Total Range: 186.3%
Incremental range: 86.3%
Minimum primary gear ratio allowed: 0.000:1
1
0.730
2
1.000
3
1.360
37% 36%
visual drivetrain comparison graphic