In aid of my dream to run my NWT with a single chainring and a Nexus 8 IGH I’ve tried using a 23T cog at the back with a 43T ring up front. The resulting gear range was too low so I tried a 21T cog in the back. Unfortunately that cog is too small to work with my Surly Singlenatortensioner chain in the push up mode [pictured below with the 23T cog].
So I put the 23T cog back on and I’ve ordered up a 46T front ring which will hopefully get the gear range where I want it. I’m pretty close!
Speaking of gearing I rec’d my JTEK Alfine/Nexus bar end shifter and I have installed it on the NWT. I’ll post details separately. It seems to work great, but since my NWT drivetrain is in pieces at the moment I haven’t road tested it yet.