The geartrain in the transmission for the Segway® Personal Transporter uses helical gears to reduce noise and vibration. The vehicle’s wheels have a diameter of 48 cm, and it has a top speed of 20.1 km/h. Each gearset was designed to have a non-integer gear ratio so that the

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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The geartrain in the transmission for the Segway® Personal Transporter uses helical gears to
reduce noise and vibration. The vehicle’s wheels have a diameter of 48 cm, and it has a top
speed of 20.1 km/h. Each gearset was designed to have a non-integer gear ratio so that the
teeth mesh at different points from revolution to revolution, therefore reducing wear and
extending the transmission’s life. Determine the following:
a) What is the velocity ratio at each mesh point of the transmission?
b) What is the velocity ratio for the entire geartrain?
c) In the units of rpm, how fast does the motor’s shaft turn at top speed?

91
Wheel's shaft
68
(output)
17
ft
t)
15 teeth
Transcribed Image Text:91 Wheel's shaft 68 (output) 17 ft t) 15 teeth
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