In reverse they tend to make a whining noise. Isn’t it the same parts doing basically the same thing either way?
In: Engineering
As others said, by using a straight-cut gear. Why the spur when all the others are helical?
– Money. A simple spur gear is a bit cheaper to make than a helical, we’ve had that hobbing technique down for a very long time.
– No need to use a helical since you don’t spend much time in reverse anyway.
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