Aeffect R cranks are the jam, been running them (2 different pairs, one was stolen) for a while with the 2x 104BD spider to add a bash-ring.
I originally got them because the 170s (and 165s I have been told) are now actually shorter than the 175s (different forgings instead of just different drillings), which was/is not always the case on RaceFace or SRAM cranks. Sure, just moving the pedals up 5mm is great, but I hit the cranks themselves easily just as often as the pedals, or at least I hit them harder, because my crank ends are frickin' hammered while my pedals are merely beat to hell, and that would be even worse with 5mm longer crank ends.
The King BSAs likely don't have problems because they are better bearings to begin with, _and_ BSA means the threads can handle those lateral loads. I'm not against GXP, the idea of the drive side handling only the massive drivetain-induced radial loads while the NDS handles all the lateral loads and lesser radial loads seems technically sound. Just aginst GXP in a PressFit, since that press fit is now being asked to handle lateral loads that are literally the same as those used to remove it, so it's way more likely to misalign no matter how good the bearings are, but yeah crap bearings would definitely exacerbate that by adding friction and providing more precession forces to help the cup walk out a bit.
Feb. 28, 2022, 10:28 a.m. - Justin White
Aeffect R cranks are the jam, been running them (2 different pairs, one was stolen) for a while with the 2x 104BD spider to add a bash-ring. I originally got them because the 170s (and 165s I have been told) are now actually shorter than the 175s (different forgings instead of just different drillings), which was/is not always the case on RaceFace or SRAM cranks. Sure, just moving the pedals up 5mm is great, but I hit the cranks themselves easily just as often as the pedals, or at least I hit them harder, because my crank ends are frickin' hammered while my pedals are merely beat to hell, and that would be even worse with 5mm longer crank ends. The King BSAs likely don't have problems because they are better bearings to begin with, _and_ BSA means the threads can handle those lateral loads. I'm not against GXP, the idea of the drive side handling only the massive drivetain-induced radial loads while the NDS handles all the lateral loads and lesser radial loads seems technically sound. Just aginst GXP in a PressFit, since that press fit is now being asked to handle lateral loads that are literally the same as those used to remove it, so it's way more likely to misalign no matter how good the bearings are, but yeah crap bearings would definitely exacerbate that by adding friction and providing more precession forces to help the cup walk out a bit.