Gear Systems

Question 1

Simple gear train formula

Answer 1

Driver
———- X Input speed
Driven

Question 2

If there are three gears

Answer 2

Forget the middle ‘idler gear’ and use the other two.

“tell it to feck off”

Question 3

Purpose of Idler gear

Answer 3

Makes sure the other gears rotate in the same direction

Question 4

O

------ What gear system is this? And its function

Answer 4

Rack and pinion
Changes rotary motion into linear motion.
Rack moves 1 tooth for every 1 tooth of the pinion

Question 5

Compound gear system formula

Answer 5

Driver Driver
——— x ———– x Input speed
Driven Driven

Question 6

Advantages of Worm and Wheel system

Answer 6

Large speed reduction
No slippage can occur
The shafts are at right angles to one another

Question 7

Worm and wheel formula

Answer 7

1

• ————– x Input speed
  no. of teeth

Question 8

What gear system is at right angles to one another

Answer 8

Bevel gears

Worm and Wheel

Question 9

Function of Ratchet and Paul

Answer 9

Allows a shaft to rotate in one direction only. Prevents rotation in other direction.