Technical > Wheels, Tyres and Brakes

Spokes

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PH:

--- Quote from: mickeg on March 16, 2024, 01:50:56 PM ---Are you saying that now Thorn builds Rohloff wheels so that the heads are all facing outwards? 

--- End quote ---
Yes, at least on the larger wheels, like this




--- Quote ---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.
--- End quote ---
I read somewhere, probably on here, that the factory fitted support rings are not the same as the aftermarket ones.  Maybe put on hot and shrink as they cool down, I can't remember.  The support rings on the hub I bought three years ago are not a lose fit, Thorn were not building wheels at the time (Pandemic) so I followed their example and built them that way myself, the rings haven't fallen off yet! 

mickeg:

--- Quote from: PH on March 16, 2024, 02:56:51 PM ---...
I read somewhere, probably on here, that the factory fitted support rings are not the same as the aftermarket ones.  Maybe put on hot and shrink as they cool down, I can't remember.  The support rings on the hub I bought three years ago are not a lose fit, Thorn were not building wheels at the time (Pandemic) so I followed their example and built them that way myself, the rings haven't fallen off yet!

--- End quote ---

Are you saying that if you buy a new hub, the support rings are already installed and fit tightly?

Dave W (former employee at SJS) has commented on this forum that rings were available to dealers but not to retail customers that required heat to install.

I built up my own Rohloff wheel, I would still lace it up the way Rohloff says to, if I built one tomorrow.  I was unaware that Thorn had changed their lacing pattern this way.  But I am not looking for a new bike, have not looked at new Thorn bikes since before the Nomad Mk III came out.

B cereus:
Given the inherent shortcomings of non forged hub shells it makes sense to minimise damage around the spoke holes. This is the rational behind Rohloff's recommendations regarding spoke diameter and elbow length. A 1X heads out build also has advantages in this respect, SJS obviously think so and are prepared to back their judgement by honouring any  warranty claims. I guess the jury is still out on this.

PH has pointed out the better spoke line at the hub of inbound spokes but this will only be the case if the spokes are chosen carefully. If the spoke doesn't easily take a straight line from the elbow to the rim its likely that any advantage of less damage to the hub flange might be at the expense of increased spoke breakage at the elbow.  A trial fitting of a spoke to the hub should confirm whether spokes are suitable. With regard to spoke line at the flange, it occurs to me that another advantage of having all spokes inbound is that it removes the process of  adjusting the spoke line of outbound spokes. This can be quite brutal and risks damaging the hub flange, depending on the method chosen.

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