Consumer demand - or blowback - is real. Most folks don't have an opinion on Trunnion mount and it makes bike design easier so it's survived. That said, I've talked to an increasing number of people who won't buy another Trunnion bike, so maybe it's on a slow burn towards death?
Other products like Giant OverDrive die so fast I can imagine there's a deep hole somewhere full of 1.5"-1-1/4" CSUs like an Atari dumpsite. In that big ass 50-52t cog the chainline on Boost-148 / 52mm bikes is bad enough that, when I was turning wrenches, I had customers mention it (because they were pedaling 32x50/52t all the time) who had other bike issues like completely blown-sloppy main pivot bearings and loose lock-on grips. As much as a surprising (to me) number of people apparently have no issues with 52mm there are enough people who do notice it that I really feel the blowback from 55mm chainlines will be real.
Will it take a hundred years for popular opinion to turn and pressure to arrive to the manufacturers - like how Fox is putting real energy into eliminating creaking crown steerer units now or will it change as fast as OverDrive? I don't have that answer. But I think it's going to be much easier to spread the hub spacing out than to give up real estate in the BB area, hence my prediction that SB-157 will be coming en masse.
Jan. 11, 2022, 9:36 a.m. - Andrew Major
Consumer demand - or blowback - is real. Most folks don't have an opinion on Trunnion mount and it makes bike design easier so it's survived. That said, I've talked to an increasing number of people who won't buy another Trunnion bike, so maybe it's on a slow burn towards death? Other products like Giant OverDrive die so fast I can imagine there's a deep hole somewhere full of 1.5"-1-1/4" CSUs like an Atari dumpsite. In that big ass 50-52t cog the chainline on Boost-148 / 52mm bikes is bad enough that, when I was turning wrenches, I had customers mention it (because they were pedaling 32x50/52t all the time) who had other bike issues like completely blown-sloppy main pivot bearings and loose lock-on grips. As much as a surprising (to me) number of people apparently have no issues with 52mm there are enough people who do notice it that I really feel the blowback from 55mm chainlines will be real. Will it take a hundred years for popular opinion to turn and pressure to arrive to the manufacturers - like how Fox is putting real energy into eliminating creaking crown steerer units now or will it change as fast as OverDrive? I don't have that answer. But I think it's going to be much easier to spread the hub spacing out than to give up real estate in the BB area, hence my prediction that SB-157 will be coming en masse.