avdave2, yeah had a look on the Thorn forum – recommends fitting brake outer with XTR cable inners.
Bike is used exclusively off road – mainly at Afan / Glyncorrwg / Brechfa – the grit seems to get in everywhere and cause havoc with most components. This was the main reason for going with the Rohloff hub in the first place, couldn’t keep up with the relentless wear and tear of (primarily) the drive-chain components.
Will be fitting the brake outer with XTR gear inners, plus the addition of three Middleburn cable oilers on each cable. One at the radius near the handlebars, one on the downtube length and the last one just after the radius under the b/b pivot area.
Hopefully this will provide a solution to the (relatively) frequent cable maintenance issues. Very pleased with the Rohloff overall, just need to get this sorted.