kiltedcelt
100 W
So I'm ditching the derailleur drivetrain on my tandem tadpole trike in favor of a NuVinci N171 hub paired with my BBSHD motor. I downloaded the original spec sheet/manual for the N171 install and nowhere in it does it specify maximum size of disc rotor. Currently, with the regular derailleur rear hub I have a 203mm rotor (which is what most folks upgrade 2-wheel tandems to, front and rear), and *it brakes,* but even with the 203mm rotor it's about what you'd expect from a cable that's nearly 10 feet long. I thought I'd read something about disc brake forces having some deleterious effect on NuVinci hubs - causing some effect on the shell that caused fluid leakage? Maybe that fluid leakage thing was later N3x version hubs? It certainly looks like the attachment point for the disc brake is different and more robust looking actually on the N171 hub versus the later N3x versions. Anyway, does anyone know if there's a limitation on size of rotor? Oh, and for the record, the brakes are TRP Spyke mechanical 2-piston disc brakes all around.