Right, now up to v3 of the calculator...
A few minor things refined, all measurements now in mm not inches (so I don't confuse myself!), and tabs for SRAM I-Motion 9 and Sturmey Archer 8 speed hubs now added in addition to the Alfine and Rohloff tabs...
Will email it to everyone in a bit... And possibly ask Clubber to host this one pending a touch more testing...

