Dan B.
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One can’t just say “stronger.” It comes down to different properties like the graph showed above. FWIW, David at Scorched says his titanium drive cups are “stronger and lighter” than steel, but that they wear more quickly and will be replaced more often.
EDIT: He bases this, quite honestly, on the fact that the hardened steel drive pins lead to premature grooving in the titanium cups. This is the same reason that Formula 1 teams, where cost is no object (and everyone else for that matter) don’t use titanium gears in transmissions. But in non impact applications, such as the use of titanium for crankshafts, the benefits of the strength and weight savings of Ti can’t really be beat. It just depends on the application. In most scenarios Ti is used merely to save weight by replacing steel in appropriate situations, not because it is stronger than hardened steels, which it is not.
FWIW, I once entertained the notion of replacing all non-stretching fasteners in my Ducati with Ti. I was shocked that just replacing external steel screws in my bike would save almost 5KG! NCR made a kit. They also made an internal engine kit including crankshaft, valves, etc. that saved an additional 7KG. When I saw the price I decided it made infinitely more sense to just eat a lot more salads and buy a very nice used car (or brand new Hyundai) instead.
EDIT: He bases this, quite honestly, on the fact that the hardened steel drive pins lead to premature grooving in the titanium cups. This is the same reason that Formula 1 teams, where cost is no object (and everyone else for that matter) don’t use titanium gears in transmissions. But in non impact applications, such as the use of titanium for crankshafts, the benefits of the strength and weight savings of Ti can’t really be beat. It just depends on the application. In most scenarios Ti is used merely to save weight by replacing steel in appropriate situations, not because it is stronger than hardened steels, which it is not.
FWIW, I once entertained the notion of replacing all non-stretching fasteners in my Ducati with Ti. I was shocked that just replacing external steel screws in my bike would save almost 5KG! NCR made a kit. They also made an internal engine kit including crankshaft, valves, etc. that saved an additional 7KG. When I saw the price I decided it made infinitely more sense to just eat a lot more salads and buy a very nice used car (or brand new Hyundai) instead.
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