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Gear ratio ?

  • Thread starter willib
  • Start date
  • #1
227
0
Hi , is anyone studying gear ratios??
i need some help with calculating the final gear drive..
i've calculated it at 94.97:1
is this correct??
 

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Answers and Replies

  • #2
2,985
15
What are these numbers, diameters, radius, number of teeth?
 
  • #3
227
0
they are number of teeth.
 
  • #4
2,985
15
Do you want to know whats the end torque? Because without radii, I cant tell you.
 
  • #5
FredGarvin
Science Advisor
5,066
8
Follow the train through logically. Starting at the motor:
Gear 1 to 2: The speed will step down by a factor of 6/43.

Gear 2 to 3: The speed should stay the same since they are on the same shaft, so it's ratio could be 1/1

Gear 3 to 4: The speed is reduced again by a factor of 12/40.

Gear 4 to 5: Again, they are on the same shaft so the ratio should be 1/1.

Gear 5 to 6: There is another reduction in speed by a factor of 12/39.

Gear 6 to 7: Same shaft, no change, 1/1.

Gear 7 to 8: A final reduction in speed of 12/39.

So where does that leave you?
 
  • #6
227
0
94.62 : 1 thanks fred ..
how did ya know it was a motor :wink: :smile:
 

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