11-09-2019, 09:39 AM
Hi Tony
A quick look on the Net suggests EN40b is specifically suited to nitriding, which the Phoenix was/is. Presumably the basis of longevity, as nitriding is claimed to have far more effect than modest increases in u.t.s (of which the original Austin was probably not lacking.)_
Out of my territory but I would have thought with NC machines and modern tools machining costs would be much the same, unless the comparison is with a crank not subjected to nitriding. Nitriding alone is expensive.
Were Phoenix cranks ground again after nitriding, or just linished, or neither?
I suspect any non nitrided crank would be much the same as the originals. Filets could be rolled but failure can also occur at oilways.
A quick look on the Net suggests EN40b is specifically suited to nitriding, which the Phoenix was/is. Presumably the basis of longevity, as nitriding is claimed to have far more effect than modest increases in u.t.s (of which the original Austin was probably not lacking.)_
Out of my territory but I would have thought with NC machines and modern tools machining costs would be much the same, unless the comparison is with a crank not subjected to nitriding. Nitriding alone is expensive.
Were Phoenix cranks ground again after nitriding, or just linished, or neither?
I suspect any non nitrided crank would be much the same as the originals. Filets could be rolled but failure can also occur at oilways.