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I want to know how to calculate the gear ratio of the given arrangement in the picture. Im not sure of how to calculate the gear ratio of two gears on the same shaft. Also the input gear is helical and the output gear is a spur gear. I have mentioned the number of gear teeth, i hope that is enough. Im very confused. Please help!!!!!

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# Calculating Gear ratio!

**Physics Forums | Science Articles, Homework Help, Discussion**