Originally Posted by
LWaB
It would probably work (don't actually know though). Brompton use the same shift lever for both their SRAM and SA hub-geared bikes.
All the nay-sayers, please explain how Brompton use the exact same shifter (of their own design) for both SRAM 3 sp and SA 3 sp hubs, without losing the hub warrantees, unless the cable pull is the same. Brompton does have a ex-SA designer on their staff, so they understand hub gears fairly thoroughly.