Joined: Jul 2015
Posts: 7,236
Likes: 3,143
From: NW Oregon
Bikes: 1982 Trek 930R Custom, '91 Diamondback Ascent w/ XT, XTR updates, Fuji Team Pro CF road flyer, Specialized Sirrus Gravel Convert, '09 Comencal Meta 5.5 XC, '02 Marin MBX500, '84 Gitane Criterium bike
That's Cast aluminum... once it bends, it's already cracked..... Bend it the other way and the Cracks open. Cast Aluminum is used because it is much stiffer than billet.. right up to yield point... then the grains separate and that separation is represented by the increase in distance between the dropout affixing holes.(edited)
Last edited by maddog34; 10-24-22 at 01:37 AM.