There was a thread on MTBR a while back about using a TomiCOG w/ a Centerlock adapter. Wasn't too enthused about it, since I had no need at the time, and I honestly wasn't that familiar with the Centerlock setup. Wellllll, I did a little tour a few weeks ago, and slummed thru a testy achilles issue that arose due to a lot of loaded bike hiking. If only I had a gear that was one step easier than the 32:20 I was spinnin'.....
Well, how to do that? Definitely not a fan derailleurs now a days, mostly due to the zen destroying noise of chainslap clanking and banging. And ripping off a rear mech out in the middle of nowhere would be a bummer. So I picked up one of these, clean ss style chainline and the same stock gearing choices available that I run single, 18 or 20, makes for a super ez switch from geared to single to fixed:
And it uses a centerlock disc mount. Since I have no experience with internal geared hubs, and since Shitmano doesn't exactly rate the Alfine for mtn bike duty, a back up plan is in order.
Pictured is an 18t and it just clears the hump from the pinch bolt, but looks like the ID of the cog needs opened up a smidge. Bit of time w/ the Dremel or a decent round file will take care of that. I think this plan is a go, 95%. Still need to check out the chainline, been reading blurbs here and there that it isn't a direct match to the drive side of the Alfine. But even if it's off by a chain width, ~6mm, should be good enough to at least let me pedal out of the woods and make it home should the IGH eat itself...time will tell.