bellathegreat9991 bellathegreat9991
  • 25-05-2018
  • Biology
contestada

if the primary gear ratio in a drill is 4:1 and secondary gear ratio is also 4:1 what is the overall gear ratio of the drill

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jamuuj jamuuj
  • 03-06-2018
I believe the answer would be 16:1
This can be looked at by assuming the motor speed is say 2000 RPM. Through the first reduction it is reduced 4 times to 500 RPM. The second reduction of 4:1 reduces it down to 125 RPM. The total reduction is the motor speed of 2000 RPM divided by the final speed of 125 or 16. A gear ratio is the ratio used to determine the angular speed and torque of a geared system. 
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jamalbrothers92 jamalbrothers92
  • 21-12-2018

I would say the answer is 16:1

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