Do you have one of these bikes? Have you tested it to see if a 650B rear wheel fits the frame and/or fork (fork not as important)? If so, what was the result?
2011, 2010, 2009 Knack Mettle Ethos
2008 Knack Mettle (Not without smaller tires than 2.25 Racing Ralph) Rite Baku Loki
2007 Knack Mettle Rite Baku Loki
2006 Awl Cyclone have small angle brace between seat tube and top tube
2005, 2004 Cyclone Hurricane Awl and Rocket and Sauce
2003 Rocket Sauce
If you have one of these, try to fit a rear 650B wheel with a 2.0-2.35 tire and see if it fits and how much clearance there is.
I tried a 2.25 Racing Ralph in my 2008 Mettle but it was a bit too tight. It fit but clearance was too slim. I have a 2.1 Neomoto and 2.0 Quasimoto on the way to try again and will report my findings asap.
If you haven't tried it and you live in the GTA (Toronto area) or are not far from Pickering/Durham region, let me know, as I am getting some 650B wheels soon and we can try it out. I have two Brodie's, only one of which it may be possible to run 650B (without serious modification).
Mtbr's 2016 Winter Biking GearReviews and Roundups
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