Logos opened its doors in the fall of 1969 on Cooper Street, just across from the old Cooper House, and just around the corner from Bookshop Santa Cruz, which had opened three years before.

So I wondered, is plus-size all it’s cracked up to be? The Santa Cruz Hightower, built for both 29 and 27.5+ wheels, seemed like the ideal testing rig to figure it out. An avalanche of 27.5 ...