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Old 01-29-2013, 07:21 AM   #11
Studly Adventurer
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Joined: Nov 2009
Location: N. E. OHIO
Oddometer: 799
" Don't make the mistake of thinking that the changed helical gear pressure face angle is the angle of the helical. That is the same for both PFA's. The difference is in the shape of each individual tooth and it is hard to see just by looking."

The newer gears I have seen were marked with an X or have a line cut around the circumference of the gear teeth.
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