| friction or pulling power on a belt comes from the sides of the belt, not the bottom . The grooves on the pulley and the bottom of the belt are mainly for alignment. And if you think about it, grooves in the same direction as rotation, would decrease friction, not increase. Maybe I am splitting hairs because the part of pulley that contacts the belt are all gonna get the same anti-slippery treatment from me.
One mechanic told me to use belt dressing, but I don't want that goop up in there, and that's a bandaid solution. When you used the words "super smooth" I became more convinced that this is part of the problem. The under drive crank pulley is too smooth and "pretty" for its own good. Thanks again.
 "Straight-line acceleration is probably the first aspect of
automotive performance that any intelligent driver gets bored with."
Peter Gregg "We owe a lot to the dragsters.
They always break something,
figure out a way to beef up the part
and then the benefit trickles
down."
Robo "Not everything that can be counted counts. Not everything that
counts can be counted."
Einstein
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