Quote:
Originally Posted by Gunner
Aren't there roll pins (or rod material) with a higher shear strength?
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I looked into that, but there really wasn't anything I could find at the time. Seems to me, when I looked into it, those spiral roll-pins are even weaker. With solid pins, like tool steel or titanium, you may have a problem keeping them installed unless you have an expertly machined and "very tight" press-fit.
The big problem is the Mallory gear is a loose fit. The pin flexs every time it goes around and eventually fatigues and breaks. Ford distributors have an interference gear to shaft fit, and with the same size pin, there are a lot less failures as the pin is in direct shear with no bending moment.
It's also difficult to cross-pin the gear as the existing hole is in the middle of the available space, so another hole, even at 90 degrees is too close and weakens the dist shaft.