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Conversion to splined sprocket system: the Splined Carrier by Rohloff
Since 2016, Rohloff has equipped all hubs in the current series with a splined sprocket system. Turning or replacing a sprocket is then very easy without a chain whip or cassette puller. Due to the same component basis (screw connection), existing hubs can be retrofitted or converted with this splined system. Rohloff offers the Splined Carrier Adapter for this purpose. This is to be used for plug-in sprockets with 13 T - 21 T.
A sprocket puller is only necessary for fitting the splined carrier. The splined sprockets themselves can be changed without a sprocket puller. The reversible sprocket is first fitted onto the Splined Carrier and secured with the help of the snap ring. Then screw the complete unit onto the hub driver as usual with a threaded sprocket.
Rohloff offers a Schablone to check for collisions between the frame strut and the sprocket.
When using the splined carrier / pinion system, the chain tensioner requires the long frame bolt.
The use of a closed chain guard (Hebie etc.) must be checked individually for compatibility.
Chainline:Using the Splined Carrier moves the previous chainline (54 mm with threaded sprockets) as follows:
- 135 / 142 mm frame w/ splined sprocket:
- 13-21 tooth = 57 mm chainline
- 148 mm frame w/ splined sprocket:
- 13-21 tooth = 54 mm chainline
- 170 / 177 / 190 / 197 mm frame w/ splined sprocket:
- 13-21 tooth = 75 mm chainline
Manufacturer's Notice:Due to the extended number of teeth, many chainring / sprocket combinations are possible. The permissible or desired transmission ratio can be determined with the Gears-Meters Table. In practice, a gear ratio (chainring: sprocket) of 2.5 - 2.8 has proven for touring/everyday use. However, if you are travelling off-road and in the mountains, you can choose your own individual gear ratio down to a minimum factor of 1.9.
- 1 x Rohloff Splined Carrier
- 1 x Rohloff circlip