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The grrr noise you hear should be more like a whiring, this is because the reverse gear is a straight cut gear, while all the other gears are helical ( 1st ,2nd, 3rd, 4th and 5th) when two straight cut gears meet there is more noise present due to the way the gears connect, as the reverse gear uses several small gears to change a clockwise motion into a anti-clockwise motion.

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15y ago

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