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Reversing a sprocket on a Rohloff hub…

Our designer Andy Blance's explains the process.

It is best if you rehearse all the operations in your head, before "going for it!"

The first thing to realise is that, if you have ever used a cassette remover and chain whip to remove a cassette, you will be tightening up the sprocket on the Rohloff hub, if you attempt to use the chain whip in the same direction as you would with a cassette hub you do this you will screw the sprocket very tightly, onto the hub

The reversal of the sprocket should be planned, in advance of needing to do it... given the massive service life of the sprocket, the need to reverse it, shouldn't be a thing that takes you by surprise. I say this because you will require access to a large vice, which is mounted securely to a workbench.

Remove the QR skewer, locate the sprocket removal tool's lugs into the slots on the hub and replace the QR skewer... this is important to maintain secure location. Tighten the QR fully…the skewer can remain in position until the sprocket is removed… the tool’s design allows for the sprocket to pass over it.

Now locate the flats of the tool in the jaws of the vice and clamp the tool securely.

Take the chain whip and wrap it carefully around the sprocket and use its leverage to turn the sprocket ANTI CLOCKWISE. (When viewed from the sprocket towards the hub). This may take considerable force.

NOTE THAT BECAUSE THE HUB IS INVERTED (SPROCKET SIDE DOWN) THIS WILL MEAN LEVERING THE CHAIN WHIP CLOCKWISE, AS YOU SEE IT, WHEN LOOKING FROM ABOVE.

I hope that this is clear... if it is not, please re-read what I've written and if it still does not make sense... please contact Thorn or Rohloff direct.

Please note the 13t Rohloff sprocket is non-reversible.

Thorn Cycles Ltd, 91-93 St John Street, Bridgwater, Somerset, TA6 5HX, England
Company no: 4121096, incorporated in England.

Open: Monday to Friday 08:30 - 17:00 Closed: Saturday, Sunday & Bank Holidays

Questions - Email us on sales@thorncycles.co.uk
Telephone +44 (0) 1278 441505
Fax +44 (0) 1278 431107

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