We all know and have been frustrated by the fact that various cranks seat to different terminal positions on various spindle tapers. What is a reasonable amount of insertion for the spindle? Deeper obviously distributes loads and bending moments much better than shallower, but 100% would prevent proper tightening of the fixing bolt. What is a good percentage?

Also, does anyone know whether Campagnolo has used more than one cutoff width for the spindle taper over the years? I am wondering specifically whether my Veloce cranks, vintage Nervars, and vintage Stronglights are designed for a traditional European taper end, but my Campagnolo cartridge was cut for a typical Shimano application. I have also had concerns about SHIMANO cranks not seating as fully as expected onto a SHIMANO UN-72 cartridge. I would worry about breakage in a crank which seats only halfway down the spindle, but the Veloce is my first experience with actual failure in this area.

I remember reading a recommended torque specification for square-spindle aluminum crank fixing bolts. Does anyone recall what the acceptable range is? I promise I will always use my trusty Husky torque wrench in this application from now on, just as I always use it when I install spark plugs in an aluminum cylinder head.