It’s a strain gauge on the crank arm oriented to the direction of torque, measuring the stress-strain response in an x-y plane. Torsion would slightly change that response and could lead to inaccurate power readings but the readings would be consistent as long as your setup is consistent.
Opinion here, not a commonly held view: the absolute value of your power is less important (within a reasonable +/-) than the change in power over time with exertion and fitness. If you use a consistent fucky setup across your bikes you should get consistently inaccurate readings which will be fine for measuring effort, fitness, and such.
Clearly, measuring at the chainrings or rear hub takes out a lot of that variability.
Their workarounds are kinda neat: sram wasn’t going to make a cassette milled from a single piece of metal without competition from Shimano. Plus this ecosystem pays my rent and student loan bills
I think it was a DC Rainmaker post I was recently reading that said Shimano’s patent on SPD expired and we should expect a bunch of SPD compatible power pedals coming this year. Anyway,
Mechanical Eagle shifts like garbage and sram derailleurs suck. The most expensive part of the system being the wear item is mind-blowingly stupid (unless you are SRAM and want to make money I guess).
SunRace should have something that’s compatible with standard HG freehubs (albeit w/o a 10t cog). Whether they’re actually available, however, is another matter entirely.
anyone have hands on experience with the archer components system? might not be the most visually elegant but it appeals to my dead ender sensibilities
