Brucey wrote:FWIW I like my peace and quiet; this means a chainglider is not an option; IME they are noisy things.
I was riding on tarmac today and I could not detect any noise above the sound of the Rohloff itself. On reflection whenever I have noticed a noise from the Chainglider, it's been because:
1. The two halves of the main front part were not properly clipped together. The last time that happened I could tell something was not quite right by the noise of the Chainglider rubbing on the chain or chainring, but what was wrong was not obvious until I looked closely and found that a couple of the small thin lugs were not properly seated in the corresponding holes on the other half. Once I had squeezed the two halves together to seat the lugs in the holes, the noise disappeared.
2. The rear part of the Chainglider was not in its optimum position. The rear section slides onto the front part, which has a series of vertical ridges on the side to keep the rear section in the same position relative to the front part. The ridges allow the rear section to be slid forwards and backwards in ~3mm increments.
The key point is that it's possible to 'rotate' the rear part around the rear sprocket within a range of probably 20-30 degrees by varying how far forward it is engaged on the top run of the enclosed chain vs. the bottom run. What I found was that on my bike there is an optimum position for the rear part of the Chainglider. When it was not in that position it was noisy (not a rubbing sound as might come from around the chainring, but more of a chattering sound). That has prompted me to mark off on the top and bottom of the front of the Chainglider how far the rear part needs to be pushed on to be in the optimum position, in order to avoid the need to find it each time by trial and error whenever I remove the rear wheel.
I would not have found that optimum position but for some warnings on the internet about a risk of the rear part of the Chainglider being in contact with the Rohloff hub shell and wearing a groove in the aluminium. There is a warning about this issue on Rohloff's website, but it's only in German (here
). I think that the problem was historic and specific to a previous version of the rear part of the Chainglider for the Rohloff, and Hebie re-designed the rear part to prevent the problem occurring. Neverthless it made me very cautious when fitting the Chainglider and consequently I took some time to ensure that the gap between the Chainglider and the uppermost part of the hub was as large as I could get it, and I happily found that that position also was the quietest (probably because that position minimises the contact of the rear part with the chain).
I think the rear part of the Chainglider is also likely to touch the inside face of the drop out/seat stay on some frames, and because I was concerned about the plastic rubbing away the paint, I cut away a very small part of the rear section and have also put some helicopter tape on the frame at that point.