Te mortuo heres tibi sim?
Join Date: Aug 2004
Location: East coast
Bikes: hardtail, squishy, fixed roadie, fixed crosser
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1. you'll need to mod the frame somehow with iscg tabs, OR use a BB mount iscg adapter. then, you also have to mod something up to ensure the adapter then doesn't spin when shifting - the thing will be under mad amount of torque. the amount of modding required just depends on your particular frame. your frame needs somwthing to mount the backplate to, or it won't work. i've had one bolted up to to different frames, no mods required. but those were frames that had the iscg tabs and the proper clearance already.
2. it's heavy. though if you've already got the weight of the alfine, it may not bother you.
3. there is significant drag in the overdrive gear.
what's the main use of the bike? IMO, for a cross bike/commuter or something, rather than combine that with an 8 speed alfine, i'd spring for the newer 11 speed version, or a rohloff hub - you'd end up with the same heft and drag,but in a tidier and using only one shifter package.