Crankset

What you can expect to find on this page

Here you will learn something about the chainring and the different gear combinations.

Chainline

The Rohloff SPEEDHUB 500/14 requires a chainline of 54mm and with splined sprocket of 57mm. On bikes with three-ring cranksets, the middle chainring sits on a chainline of 47.5mm (measured from the frame center). The largest chainring has a chainline of 54mm.

On most MTB and Trekking bike cranksets, the largest chainring and bottom bracket can normally be reused in conjunction with the Rohloff SPEEDHUB 500/14.

Chainring

When disassembling the crankset for use with the Rohloff SPEEDHUB 500/14, the middle and smallest chainring will not need to be used, so they must be removed from the crankset.

The chainring threaded bushes will be too long, because they are no longer securing two chainrings. For this reason there are five chainring spacers included in the small parts bag (to be found in every package). These should be placed over the threaded bushes before reassembling the crankset, so that the single chainring can be properly and tightly secured. (chainrig bolts: 5mm allen key, lightly greased, tightening torque: 7Nm/61in.lbs.).

Sprocket Ratios

The Rohloff SPEEDHUB 500/14 has a 526% range of gears, that means gear #14 is 5.26 times greater than gear #1. The 14 gears are evenly spaced out over this range in 13.6% increases. Through the choice of chainring and sprocket in use, the Rohloff SPEEDHUB 500/14 can be tuned for the specific riding purpose. The Rohloff SPEEDHUB 500/14 comes standard with a 16 tooth sprocket. 13-19 + 21tooth sprockets are available as alternatives.

In the gear-meters tables the distance travelled per crank revolution is listed for gears #1 and #14. The listed distance travelled per crank revolution is shown in the tables for a variety of sprocket ratios and wheel sizes (20", 26" and 28" wheels).

When the particular wheel/sprocket/chainring size and gear is not listed in the tables, then the following formula can be used to calculate the exact distance travelled per crank revolution of the Rohloff SPEEDHUB 500/14:

Distance travelled per crank revolution  = W · C / S · IGR

with

W = Wheel circumference
C = Chainring size
S = Sprocket size
IGR = Inner gear ratio listed in the following table

Inner gear ratio IGR = hub revolutions per sprocket revolutions of the Rohloff SPEEDHUB 500/14

Technical changes reserved!
Gear 1 2 3 4 5 6 7 8 9 10 11 12 13 14
IGR 0.279 0.316 0.360 0.409 0.464 0.528 0.600 0.682 0.774 0.881 1.000 1.135 1.292 1.467

The tables linked here or the following formula can be used to compare the Rohloff SPEEDHUB 500/14 to a derailleur gear system
Ratio of the derailleur gear system  = C / S
Ratio of the Rohloff SPEEDHUB 500/14= IGR · C / S

Smallest Permissible Sprocket Ratios (solo 100kg)

The sprocket ratio on the Rohloff SPEEDHUB 500/14 (e.g. 42:16) converts the slow rotational speed at the crank, into a fast rotational speed at the sprocket and reduces the input torque for the Rohloff SPEEDHUB 500/14 in the same proportion.

To prevent overstraining the hub, a minimum sprocket factor of 1.90 must be upheld. With the available sprockets, these minumum ratios are achieved with: 53:21, 48:19,  45:18, 42:17, 40:16, 38:15.

These primary transmisison ratios resemble a singlespeed transmission of 22:40. Larger chainrings can be used without any exceptions.

Attention

The following sprocket ratios must not be undercut if the SPEEDHUB is used by a rider weighing more than 100kg, or mounted on a tandem application:  53:21, 48:19,  45:18, 42:17, 40:16, 38:15
This equates to a transmission factor of 2.50.

Gear-meters Tables

Min. transmission factor for solo cyclists under 100 kg = 1.9
Min. transmission factor for Tandem or cyclists over 100 kg = 2.5 (in table highlighted in bold)

Distance traveled per crank revolution with 20'' wheels (circumference 1.51 m). In the top row are the sprockets, in the left column the corresponding chainring. Details from-to in meters.

  13 teeth 14 teeth 15 teeth 16 teeth 17 teeth 18 teeth 19 teeth 21 teeth
26 teeth 0.84 - 4.43 0.78 - 4.11            
28 teeth 0.91 - 4.77 0.84 - 4.43 0.79 - 4.13          
30 teeth 0.97 - 5.11 0.90 - 4.75 0.84 - 4.43 0.79 - 4.15        
32 teeth 1.04 - 5.45 0.96 - 5.06 0.90 - 4.73 0.84 - 4.43 0.79 - 4.17      
34 teeth 1.10 - 5.79 1.02 - 5.38 0.95 - 5.02 0.90 - 4.71 0.84 - 4.43 0.80 - 4.18    
36 teeth 1.17 - 6.13 1.08 - 5.70 1.01 - 5.32 0.95 - 4.98 0.89 - 4.69 0.84 - 4.43 0.80 - 4.20  
38 teeth 1.23 - 6.48 1.14 - 6.01 1.07 - 5.61 1.00 - 5.26 0.94 - 4.95 0.89 - 4.68 0.84 - 4.43  
40 teeth 1.30 - 6.82 1.20 - 6.33 1.12 - 5.91 1.05 - 5.54 0.99 - 5.21 0.94 - 4.92 0.89 - 4.66 0.80 - 4.22
42 teeth 1.36 - 7.16 1.26 - 6.65 1.18 - 6.20 1.11 - 5.81 1.04 - 5.47 0.98 - 5.17 0.93 - 4.90 0.84 - 4.43
44 teeth 1.43 - 7.50 1.32 - 6.96 1.24 - 6.50 1.16 - 6.09 1.09 - 5.73 1.03 - 5.41 0.98 - 5.13 0.88 - 4.64
46 teeth 1.49 - 7.84 1.38 - 7.28 1.29 - 6.79 1.21 - 6.37 1.14 - 5.99 1.08 - 5.66 1.02 - 5.36 0.92 - 4.85
48 teeth 1.56 - 8.18 1.44 - 7.59 1.35 - 7.09 1.26 - 6.65 1.19 - 6.25 1.12 - 5.91 1.06 - 5.60 0.96 - 5.06
50 teeth 1.62 - 8.52 1.50 - 7.91 1.40 - 7.38 1.32 - 6.92 1.24 - 6.52 1.17 - 6.15 1.11 - 5.83 1.00 - 5.27
52 teeth 1.69 - 8.86 1.56 - 8.23 1.46 - 7.68 1.37 - 7.20 1.29 - 6.78 1.22 - 6.40 1.15 - 6.06 1.04 - 5.49
54 teeth 1.75 - 9.20 1.62 - 8.54 1.52 - 7.97 1.42 - 7.48 1.34 - 7.04 1.26 - 6.65 1.20 - 6.30 1.08 - 5.70
56 teeth 1.81 - 9.54 1.69 - 8.86 1.57 - 8.27 1.47 - 7.75 1.39 - 7.30 1.31 - 6.89 1.24 - 6.53 1.12 - 5.91

Distance traveled per crank revolution with 26'' wheels (circumference 1.51 m). In the top row are the sprockets, in the left column the corresponding chainring. Details from-to in meters.

  13 teeth 14 teeth 15 teeth 16 teeth 17 teeth 18 teeth 19 teeth 21 teeth
26 teeth 1.15 - 6.04 1.07 - 5.61            
28 teeth 1.24 - 6.51 1.15 - 6.04 1.07 - 5.64          
30 teeth 1.33 - 6.97 1.23 - 6.48 1.15 - 6.04 1.08 - 5.67        
32 teeth 1.41 - 7.44 1.31 - 6.91 1.23 - 6.45 1.15 - 6.04 1.08 - 5.69      
26 teeth 1.50 - 7.90 1.40 - 7.34 1.30 - 6.85 1.22 - 6.42 1.15 - 6.04 1.09 - 5.71    
36 teeth 1.59 - 8.37 1.48 - 7.77 1.38 - 7.25 1.29 - 6.80 1.22 - 6.40 1.15 - 6.04 1.09 - 5.73  
38 teeth 1.68 - 8.83 1.56 - 8.20 1.46 - 7.66 1.37 - 7.18 1.28 - 6.76 1.21 - 6.38 1.15 - 6.04  
40 teeth 1.77 - 9.30 1.64 - 8.63 1.53 - 8.06 1.44 - 7.56 1.35 - 7.11 1.28 - 6.72 1.21 - 6.36 1.09 - 5.76
42 teeth 1.86 - 9.76 1.72 - 9.07 1.61 - 8.46 1.51 - 7.93 1.42 - 7.47 1.34 - 7.05 1.27 - 6.68 1.15 - 6.04
44 teeth 1.95 - 10.23 1.81 - 9.50 1.69 - 8.86 1.58 - 8.31 1.49 - 7.82 1.40 - 7.39 1.33 - 7.00 1.20 - 6.33
46 teeth 2.03 - 10.69 1.89 - 9.93 1.76 - 9.27 1.65 - 8.69 1.56 - 8.18 1.47 - 7.72 1.39 - 7.32 1.26 - 6.62
48 teeth 2.12 - 11.16 1.97 - 10.36 1.84 - 9.67 1.72 - 9.07 1.62 - 8.53 1.53 - 8.06 1.45 - 7.63 1.31 - 6.91

Distance traveled per crank revolution with 650B wheels (circumference 2.15 m). In the top row are the sprockets, in the left column the corresponding chainring. Details from-to in meters.

  13 teeth 14 teeth 15 teeth 16 teeth 17 teeth 18 teeth 19 teeth 21 teeth
26 teeth 1.20 - 6.31 1.11 - 5.86            
28 teeth 1.29 - 6.79 1.20 - 6.31 1.12 - 5.89          
30 teeth 1.38 - 7.28 1.29 - 6.76 1.20 - 6.31 1.12 - 5.91        
32 teeth 1.48 - 7.76 1.37 - 7.21 1.28 - 6.73 1.20 - 6.31 1.13 - 5.94      
34 teeth 1.57 - 8.25 1.46 - 7.66 1.36 - 7.15 1.27 - 6.70 1.20 - 6.31 1.13 - 5.96    
36 teeth 1.66 - 8.73 1.54 - 8.11 1.44 - 7.57 1.35 - 7.10 1.27 - 6.68 1.20 - 6.31 1.14 - 5.98  
38 teeth 1.75 - 9.22 1.63 - 8.56 1.52 - 7.99 1.42 - 7.49 1.34 - 7.05 1.27 - 6.66 1.20 - 6.31  
40 teeth 1.85 - 9.70 1.71 - 9.01 1.60 - 8.41 1.50 - 7.89 1.41 - 7.42 1.33 - 7.01 1.26 - 6.64 1.14 - 6.01
42 teeth 1.94 -10.19 1.80 - 9.46 1.68 - 8.83 1.57 - 8.28 1.48 - 7.79 1.40 - 7.36 1.33 - 6.97 1.20 - 6.31
44 teeth 2.03 -10.68 1.89 - 9.91 1.76 - 9.25 1.65 - 8.67 1.55 - 8.16 1.47 - 7.71 1.39 - 7.30 1.26 - 6.61
46 teeth 2.12 -11.16 1.97 -10.36 1.84 - 9.67 1.72 - 9.07 1.62 - 8.53 1.53 - 8.06 1.45 - 7.64 1.31 - 6.91
48 teeth 2.21 -11.65 2.06 -10.81 1.92 -10.09 1.80 - 9.46 1.69 - 8.91 1.60 - 8.41 1.52 - 7.97 1.37 - 7.21

Distance traveled per crank revolution with 28'' wheels (circumference 2.18 m). In the top row are the sprockets, in the left column the corresponding chainring. Details from-to in meters.

  13 teeth 14 teeth 15 teeth 16 teeth 17 teeth 18 teeth 19 teeth 21 teeth
26 teeth 1.22 - 6.40 1.13 - 5.94            
28 teeth 1.31 - 6.89 1.22 - 6.40 1.14 - 5.97          
30 teeth 1.40 - 7.38 1.30 - 6.85 1.22 - 6.40 1.22 - 6.40        
32 teeth 1.50 - 7.87 1.39 - 7.31 1.30 - 6.82 1.22 - 6.40 1.14 - 6.02      
34 teeth 1.59 - 8.36 1.48 - 7.77 1.38 - 7.25 1.29 - 6.80 1.22 - 6.40 1.15 - 6.04    
36 teeth 1.68 - 8.86 1.56 - 8.22 1.46 - 7.68 1.37 - 7.20 1.29 - 6.77 1.22 - 6.40 1.15 - 6.06  
38 teeth 1.78 - 9.35 1.65 - 8.68 1.54 - 8.10 1.44 - 7.60 1.36 - 7.15 1.28 - 6.75 1.22 - 6.40  
40 teeth 1.87 - 9.84 1.74 - 9.14 1.62 - 8.53 1.52 - 8.00 1.43 - 7.52 1.35 - 7.11 1.28 - 6.73 1.16 - 6.09
42 teeth 1.97 - 10.33 1.82 - 9.59 1.70 - 8.95 1.60 - 8.39 1.50 - 7.90 1.42 - 7.46 1.34 - 7.07 1.22 - 6.40
44 teeth 2.06 - 10.82 1.91 - 10.05 1.78 - 9.38 1.67 - 8.79 1.57 - 8.28 1.49 - 7.82 1.41 - 7.41 1.27 - 6.70
46 teeth 2.15 - 11.32 2.00 - 10.51 1.87 - 9.81 1.75 - 9.19 1.65 - 8.65 1.55- 8.17 1.47 - 7.74 1.33 - 7.01
48 teeth 2.25 - 11.81 2.09 - 10.96 1.95 - 10.23 1.82 - 9.59 1.72 - 9.03 1.62 - 8.53 1.54 - 8.08 1.39 - 7.31
50 teeth 2.34 - 12.30 2.17 - 11.42 2.03 - 10.66 1.90 - 9.99 1.79 - 9.41 1.69 - 8.88 1.60 - 8.42 1.45 - 7.61

Distance traveled per crank revolution with 29'' wheels (circumference 2.30 m). In the top row are the sprockets, in the left column the corresponding chainring. Details from-to in meters.

  13 teeth 14 teeth 15 teeth 16 teeth 17 teeth 18 teeth 19 teeth 21 teeth
26 teeth 1.28 - 6.75 1.19 - 6.27            
28 teeth 1.38 - 7.27 1.28 - 6.75 1.20 - 6.30          
30 teeth 1.48 - 7.79 1.38 - 7.23 1.28 - 6.75 1.20 - 6.33        
32 teeth 1.58 - 8.31 1.47 - 7.71 1.37 - 7.20 1.28 - 6.75 1.21 - 6.35      
34 teeth 1.68 - 8.82 1.56 - 8.19 1.45 - 7.65 1.36 - 7.17 1.28 - 6.75 1.21 - 6.37    
36 teeth 1.78 - 9.34 1.65 - 8.68 1.54 - 8.10 1.44 - 7.59 1.36 - 7.15 1.28 - 6.75 1.22 - 6.39  
38 teeth 1.88 - 9.86 1.74 - 9.16 1.63 - 8.55 1.52 - 8.01 1.43 - 7.54 1.35 - 7.12 1.28 - 6.75  
40 teeth 1.97 - 10.38 1.83 - 9.64 1.71 - 9.00 1.60 - 8.44 1.51 - 7.94 1.43 - 7.50 1.35 - 7.10 1.22 - 6.43
42 teeth 2.07 - 10.90 1.93 - 10.12 1.80 - 9.45 1.68 - 8.86 1.59 - 8.34 1.50 - 7.87 1.42 - 7.46 1.28 - 6.75
44 teeth 2.17 - 11.42 2.02 - 10.60 1.88 - 9.90 1.76 - 9.28 1.66 - 8.73 1.57 - 8.25 1.49 - 7.81 1.34 - 7.07

Distance traveled per crank revolution with 26'' Fatbikes (circumference 2.32 m). In the top row are the sprockets, in the left column the corresponding chainring. Details from-to in meters.

  13 teeth 14 teeth 15 teeth 16 teeth 17 teeth 18 teeth 19 teeth 21 teeth
26 teeth 1.29 - 6.81 1.20 - 6.32            
28 teeth 1.39 - 7.33 1.29 - 6.81 1.21 - 6.35          
30 teeth 1.49 - 7.85 1.39 - 7.29 1.29 - 6.81 1.21 - 6.38        
32 teeth 1.59 - 8.38 1.48 - 7.78 1.38 - 7.26 1.29 - 6.81 1.22 - 6.41      
34 teeth 1.69 - 8.90 1.57 - 8.27 1.47 - 7.71 1.38 - 7.23 1.29 - 6.81 1.22 - 6.43    
36 teeth 1.79 - 9.42 1.66 - 8.75 1.55 - 8.17 1.46 - 7.66 1.37 - 7.21 1.29 - 6.81 1.23 - 6.45  
38 teeth 1.89 - 9.95 1.76 - 9.24 1.64 - 8.62 1.54 - 8.08 1.45 - 7.61 1.37 - 7.19 1.29 - 6.81  
40 teeth 1.99 - 10.47 1.85 - 9.72 1.73 - 9.08 1.62 - 8.51 1.52 - 8.01 1.44 - 7.56 1.36 - 7.17 1.23 - 6.48
42 teeth 2.09 - 11.00 1.94 - 10.21 1.81 - 9.53 1.70 - 8.93 1.60 - 8.41 1.51 - 7.94 1.43 - 7.52 1.29 - 6.81
44 teeth 2.19 - 11.52 2.03 - 10.70 1.90 - 9.98 1.78 - 9.36 1.68 - 8.81 1.58 - 8.32 1.50 - 7.88 1.36 - 7.13
46 teeth 2.29 - 12.04 2.13 - 11.18 1.98 - 10.44 1.86 - 9.78 1.75 - 9.21 1.65 - 8.70 1.57 - 8.24 1.42 - 7.46
48 teeth 2.39 - 12.57 2.22 - 11.67 2.07 - 10.89 1.94 - 10.21 1.83 - 9.61 1.73 - 9.08 1.64 - 8.60 1.48 - 7.78

Derailleur gears in comparison to Rohloff SPEEDHUB

The table shows which sprocket ratio on the Rohloff SPEEDHUB 500/14 must be used to resemble the smallest transmission of a derailleur gear system.

Smallest sprocket ratio of derailleur gears Gear #1 Rohloff SPEEDHUB 500/14 sprocket ratio
22/40 26/13 28/15 32/16 34/17
24/40 28/13 32/15 34/16 36/17
26/42 28/13 34/15 36/16 38/17
20/34 28/13 32/15 34/16 36/17
22/34 30/13 34/15 38/16 40/17
24/34 32/13 38/15 40/16 44/17
26/34 36/13 42/15 44/16 46/17
20/32 30/13 34/15 36/16 38/17
22/32 32/13 36/15 40/16 42/17
24/32 34/13 40/15 44/16 46/17
26/32 38/13 44/15 46/16 50/17
20/30 32/13 36/15 38/16 40/17
22/30 34/13 40/15 42/16 44/17
24/30 38/13 44/15 46/16 48/17
26/30 40/13 46/15 50/16 52/17

The table shows which sprocket ratio on the Rohloff SPEEDHUB 500/14 must be used to resemble the largest transmission of a derailleur gear system.

Largest sprocket ratio of derailleur gears Gear #14 Rohloff SPEEDHUB 500/14 sprocket ratio
26/10 --- 26/15 28/16 30/17
28/10 24/13 28/15 30/16 32/17
30/10 26/13 30/15 32/16 34/17
32/10 28/13 32/15 34/16 38/17
34/10 30/13 34/15 38/16 40/17
36/10 32/13 36/15 40/16 42/17
38/10 34/13 38/15 42/16 44/17
40/10 36/13 40/15 44/16 46/17
42/10 38/13 44/15 46/16 48/17
32/11 26/13 30/15 32/16 34/17
34/11 28/13 32/15 34/16 36/17
36/11 30/13 34/15 36/16 38/17
38/11 30/13 36/15 38/16 40/17
40/11 32/13 38/15 40/16 42/17
42/11 34/13 40/15 42/16 44/17
44/11 36/13 40/15 44/16 46/17
46/11 38/13 42/15 46/16 48/17
48/11 38/13 44/15 48/16 50/17
50/11 40/13 46/15 50/16 52/17
52/11 42/13 48/15 52/16 54/17
54/11 44/13 50/15 54/16 56/17
38/12 28/13 32/15 34/16 36/17
40/12 30/13 34/15 36/16 38/17
42/12 32/13 36/15 38/16 40/17
44/12 32/13 38/15 40/16 42/17
46/12 34/13 40/15 42/16 44/17
48/12 36/13 40/15 44/16 46/17
50/12 36/13 42/15 46/16 48/17
52/12 38/13 44/15 48/16 50/17
54/12 40/13 46/15 50/16 52/17

The table shows which smallest and largest sprocket ratio of derailleur gears resembles the existing transmission of the Rohloff SPEEDHUB 500/14.

Sprocket ratio (chainring/sprocket) Rohloff SPEEDHUB 500/14 Gear #1 resembles a derailleur gear sprocket ratio of Gear #14 resembles a derailleur gear sprocket ratio of
38/13 22/26 24/30 48/11 52/12
40/13 22/25 24/27 50/11 54/12
42/13 22/24 24/26 52/11 56/12
44/13 22/23 24/25 54/11 60/12
46/13 22/22 24/24 58/11 62/12
48/13 22/21 24/23 60/11 64/12
50/13 22/20 24/22 62/11 68/12
52/13 22/19 24/21 64/11 70/12
54/13 22/18 24/20 68/11 74/12
38/15 22/32 24/34 42/11 44/12
40/15 22/30 24/32 44/11 46/12
42/15 22/28 24/30 46/11 50/12
44/15 22/26 24/29 48/11 52/12
46/15 22/25 24/28 50/11 54/12
48/15 22/24 24/26 52/11 56/12
50/15 22/23 24/25 54/11 58/12
52/15 22/22 24/24 56/11 62/12
54/15 22/21 24/23 60/11 64/12
38/16 22/34 24/36 38/11 42/12
40/16 22/30 24/34 40/11 44/12
42/16 22/32 24/32 42/11 46/12
44/16 22/28 24/32 44/11 48/12
46/16 22/27 24/30 46/1150/12
48/16 22/26 24/28 48/11 52/12
50/16 22/25 24/27 50/11 56/12
52/16 22/24 24/26 52/11 58/12
54/16 22/23 24/25 54/11 60/12
40/17 22/34 24/36 38/11 42/12
42/17 22/32 24/34 40/11 44/12
44/17 22/30 24/34 42/11 46/12
46/17 22/29 24/32 44/11 48/12
48/17 22/27 24/30 46/11 50/12
50/17 22/26 24/29 48/11 52/12
52/17 22/25 24/28 50/11 54/12
54/17 22/24 24/27 52/11 56/12