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GEAR TRAIN QUESTION - ANSWER

V. Ryan 2003

 

(a) Using the incomplete diagram opposite, sketch a mechanism that would convert the rotary motion of the handle into rotary motion of the head.

Bevel gears can be used to change the direction of drive in a gear system by 90 degrees. In the diagram, the head revolves clockwise and anticlockwise as the bevel gears are turn backwards and forwards.

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(b) The shop owner has decided that the model should be motorised and he has sketched the drawing opposite.

 

 
(c) If the motor turns in a clockwise direction, which direction will gear X turn ?

CLOCKWISE

   
(d) What is the name of the gear arrangement shown in the diagram above ?

COMPOUND

   
(e) The motor turns at 180 rpm. How fast will gear Y turn ?

   
   

 

   
(f) How fast will gear X turn ?

   

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