I'm not weighing in on the usefulness of 650b because I've never ridden it or paid much attention to the argument but you can be sure there is a major transition coming quick.
At the OEM 'show' in Taichung it was no secret that wheel, tire, and frame manufacturers were going pretty full speed in that direction. And more than a few PM's mentioned that anyone not having a solid 650b design was going to be off the back. Without naming the specific companies there is plenty of truth to the rumor that 26" is being relegated to DH and sub$800 XC, the rest is 650b and 29.
I'm a fan of change though. It's meeting some initial resistance for sure, but there's a long list of successful and indispensable MTB products that were written off at first. There are also some that fell flat on their face (24" wheels, 3" tires, the DH hardtail....). A positive sign, at least, is that wheel, frame, and tire manufacturers for the most part seem on the same page so at least in theory the transition should be smooth enough....
Personally I'm a fan of manufacturers that are designing the choice into their respective models. I'll use Banshee as an example since i was just at their factory, but they have several bikes with multiple dropout options that can be swapped out relatively cheaply (135qr, 142x12, 150x12; 26, 650b, 29) without any change to the frame. Whether this truly optimizes a design around a single wheel size is a matter to be debated later, but for now it certainly holds great appeal to those of us unconvinced or uncommited.
Whether or not quality wheel options will be available at all levels remains to be seen....
At the OEM 'show' in Taichung it was no secret that wheel, tire, and frame manufacturers were going pretty full speed in that direction. And more than a few PM's mentioned that anyone not having a solid 650b design was going to be off the back. Without naming the specific companies there is plenty of truth to the rumor that 26" is being relegated to DH and sub$800 XC, the rest is 650b and 29.
I'm a fan of change though. It's meeting some initial resistance for sure, but there's a long list of successful and indispensable MTB products that were written off at first. There are also some that fell flat on their face (24" wheels, 3" tires, the DH hardtail....). A positive sign, at least, is that wheel, frame, and tire manufacturers for the most part seem on the same page so at least in theory the transition should be smooth enough....
Personally I'm a fan of manufacturers that are designing the choice into their respective models. I'll use Banshee as an example since i was just at their factory, but they have several bikes with multiple dropout options that can be swapped out relatively cheaply (135qr, 142x12, 150x12; 26, 650b, 29) without any change to the frame. Whether this truly optimizes a design around a single wheel size is a matter to be debated later, but for now it certainly holds great appeal to those of us unconvinced or uncommited.
Whether or not quality wheel options will be available at all levels remains to be seen....