In preparation for NAHBS, I like to crank up my framebuilder observation scope, resulting in obsessive Instagram stalking of my favorite builders, even if they’re not attending the show. If you were to ask me the number one challenge builders are presented with currently, in terms of construction techniques, my answer would be swift and without hesitation: 27.5+ yokes. Designing a yoke that will clear the tire, maintain optimal chainline and allow the use of a range of ring sizes is not easy. The issue is sometimes you’ve only got millimeters to spare and while machining or casting a yoke would be an easy solution, you sacrifice weight. If you use normal chainstays and crimp to allow clearance, you weaken those points considerably. A few builders have cleverly designed their solutions. My current favorite is Cameron Falconer, who uses plate steel at the drive side and a normal, bent stay on the non-drive side. The asymmetry doesn’t bother me, yet when I see this design by Konga Bicycles, my mouth begins to water. Check out more at the Konga Flickr!