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Marnin' all,
I have a pretty flat 8 km commute to work, not much traffic etc. So my Rohloff hub is a bit wasted. I'm thinking of converting my road/commute bike to fixed (first time, only tried singlespeed MTB last week!) and to rebuild my wheel I need a 135mm spacing. Surly seems to provide a lot of options (HAS to be silver) but I don't quite understand the difference between the threads for a fixed sprocket and a freewheel. The photo on the Surly website (see below) shows each end is different, but which is which?
Cheers, Gaidong
The fixed side has a 2 threads - one for the sprocket and one smaller, reverse thread one for the lockring.
Many thanks Simon!
You can also get a 6-bolt disk adapter for the freewheel side if your frame has disk mounts and you want to keep the brake. Just be aware the grub screw with wreck the threads, so if you want to go back to a freewheel you'd need to clean them up.
https://www.merciancycles.co.uk/online-shop/clearance/arai-disc-brake-adapter
Very nice non-spoon! Looking to see if they do it in raw alloy (silver)...
Is that a disk-fixed or disk-singlespeed hub? Can't quite tell on the photo, and I wasn't aware they made that disk-fixed combination.
I've been using a fixed sprocket on a singlespeed hub, and trusting that because I have two brakes, I'll not back-pedal hard enough to unscrew it. No problems in about 3 years, but if I make new wheels in future, it'd be nice to have the right one with a lockring.
Is that a disk-fixed or disk-singlespeed hub?
It's disk fixed.
Nice, might be a new pair of hoops on the cards then. Those Surly hubs are bloody lovely, if a bit heavy.
You can run a freewheel on a fixed thread so unless you actually want a disk get a fixed fixed flipflop.
I’ve been using a fixed sprocket on a singlespeed hub, and trusting that because I have two brakes, I’ll not back-pedal hard enough to unscrew it. No problems in about 3 years, but if I make new wheels in future, it’d be nice to have the right one with a lockring.
You can put a lock ring from an old style bottom bracket on a single speed hub and that will hold the sprocket in place