Mech Hangers Are Expensive
So mech hangers are a deliberate weak link which protects your frame and your derailleur from being written off if you bash the back around a bit much. Why are they so expensive? And why, if they are deliberately weak, are they not plastic? Assuming plastic ones would be cheaper to replace than alloy or machined ones. I'm asking because i've slid off alot recently due to the roads being covered in lovely loose grit salt and i'm on my 3rd replacement since Christmas, at about a tenner a go it's becoming quite expensive.