Mechanisms Crossword

  

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2. Cars have four
7. A wheel with a groove on the edge
9. The rod through the centre of gears, wheels and pulleys
10. Allows one way turning - found on some screwdrivers.
11. The gear or pulley which turns the others
12. A wheel with teeth.
14. Power is taken form one shaft to another
17. How much faster the wheels turn
18. In a straight line
21. A wonky wheel? It could have a lobe.
23. Going up and down
24. When the follower does not move
25. Trying for 100%
26. Why efficiency is never 100%
28. Like a swing
29. Wheel shaft
30. The gears or pulleys that are turned
31. A spiral gear

1. A gear for going round corners
3. A stick that gives you a mechanical advantage
4. Joins two pulleys
5. A lever rests on this
6. Turns a wheel into a gear
8. A lever can rotate on this
9. Bouncy - can return a lever.
13. To go up
15. A gear system turning rotary to linear motion.
16. Oil - reduces friction.
19. Used to change gears' direction.
20. Rests on the cam
22. Goes downwards
27. Connected to a bicycle pedal