Have a long slot campag set of dropouts on a DIY bike frame I built in '75 , the adjuster seized
and would not budge to screw in or out .
so I just broke off the screw on both sides of the back of the dropout ,

and proceeded to ride the bike un hampered. ever since..

vertical dropouts are almost compulsory with indexed shifters , now,

so the wheel goes back in the same spot relative to the RD guide pulley with consistency..

Friction shift derail, or IGH it matters less ..


I have the semi verti-zontal dropouts on my steel 91 Pinarello CX frame,
I thought them odd .