Technical > Wheels, Tyres and Brakes

Spokes

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martinf:
Ryde Andra 30 and Andra 40 rims are also suitable for building a Rohloff wheel.

Ryde Andra, Grizzly and Edge 7 rims are specifically mentioned in a Rohloff manual, along with the Ex19 rim from Exal.

I have Andra 30 on my 2012 Raven Tour with Rohloff hub, but my other two Rohloff equipped bikes have less suitable rims.

Rohloff recommend particular bend and spoke head dimensions. These were used on two of my Rohloff wheels, but it wasn't possible to source these specific spokes when I built the 16" wheel on my Rohloff-equipped Brompton. So on this wheel at least, the guarantee is void.   

PH:
A few years ago, maybe still, but I don't know - SJS/Thorn used Sapim Race and were ordering in large enough quantities to specify the wire used!  At that time, again maybe still, Rohloff branded spokes were Sapim Race that had gone through additional QC to ensure any burs had been removed from the J bend.

B cereus:
As I understand it Rholoff spoke holes are optimised for spokes with a 2.9mm elbow length and a diameter of 2mm at the elbow. Rohloff's own spokes are 14/15 g (2.0-1.8-2.0mm) with 2.9mm elbow length.

In the past Rohloff also sanctioned the use of Sapim Race and DT Swiss Competition spokes but as indicated in the OP will now only guarantee hubs that have been laced with their own spokes. Rohloff spokes are apparently made by Sapim but are not identical to Sapim's own Race spokes. Sapim Race spokes are 14/15g (2.0 – 1.8 – 2.0mm) but with a 2.7mm elbow length. Dt Swiss are also 14/15 (2.0-1.8-2.0mm) but with a 2.4mm elbow length.

Sapim Strong butted spokes are 2.3mm diameter at the elbow  and would not be ideal for a  Rohloff.

Edit to add:

For a new build it makes sense to use Rohloff's own spokes but for rebuilds I'd be inclined to stick with whatever spokes were used previously, to which the hub flange will bear witness.

PH:
I wonder what Thorn are using now.  It occurred to me that their present spoke pattern  (One cross and all the spokes heads out) not only makes for a better angle at the rim, it also means every spoke is pointing away from the flange as it exits the spoke hole, rather than crossing it.  Not only will that result in less spoke rub on the flange, it might also make the elbow depth less critical.

mickeg:

--- Quote from: PH on March 15, 2024, 06:27:06 PM ---I wonder what Thorn are using now.  It occurred to me that their present spoke pattern  (One cross and all the spokes heads out) not only makes for a better angle at the rim, it also means every spoke is pointing away from the flange as it exits the spoke hole, rather than crossing it.  Not only will that result in less spoke rub on the flange, it might also make the elbow depth less critical.

--- End quote ---

Are you saying that now Thorn builds Rohloff wheels so that the heads are all facing outwards? 

If so, the new flange rings that are provided with the hubs would fall off, you need some spokes on the outside of the flange to hold the flange rings in place.

I added those flange rings to my Rohloff wheel several years ago, the rings fit loosely on the flange.

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