Cam Phasing

TT5.9mag said
I’m not wrong. I’m stating facts basically right out of text books. If the bolts stay tight, they see virtually no shear load you are correct, until the point that the force to drive the components (blower) exceeds the friction capacity of the bolted components and you get slip. Then the bolts are carrying load in shear. They get around this by adding multiple fasteners. That’s why there are 6- 3/8” bolts to hold that pulley on. And blower drive service knows what they’re doing, they sell “all crank hubs with a stock sized keyway AND a 1/4” keyway located 180 degrees from the stock one”

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And the crank bolt's tension is what's holding that hub in place during operation, not the keys.

Leave the crank bolt out, make a pass, and get back to me.

OR I guess I could ask....where's the key on the flywheel side? You know....the side that sees repeated shock loads and far more drive forces?:poke:

I don't need your linked website to understand this. An MS in Mechanical engineering covered it for me. :thumbsup:

But! I'll quote your linked site for you.
"The mechanics of a bolt in tension are less complicated than for a bolt in shear. In this case there is no slip to consider. " No slip, no shear. Just like I said in post 94. I'd cite the source for you, but you already know it.