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@number6
yes i found it easier to think in terms of
0.75 1.00 and 1.33333333
THE range is not very TT (as the USC was )/ street / hipster friendly - it being a touring range. more suited to what i like - getting out in the hills on long rides
i set the center gear as pretty much what i'd ride anyway - some where between 42/18 and 42/17
this means with 42t on front you'd want a 14 on rear for the s3x hub. giving apporx these gears equivalent UPHILL 42/24 LEVEL 42/18 DOWNHILL 42/ 14
or with the proper sturmey crank i've fitted (46T) i've put on a 15T for similar but very slightly longer gears.
they were right to put Direct drive as top because if anything goes in the way of cable / shifter you certainly don't want to be running fast down a hill and suddenly find yourself in a low gear
(redlining my motorbike on the motorway i changed down instead of up with similar heart stopping - rear wheel locking- results )
i'll stick on pics of the build later tonight.