Teaching machine design & mechanics by jacques maurel

Gears and paradoxical gears


  Text (in French) and photos about:
- Gears pedagogy
- Paradoxical gears
- Mercier differencial

  EngrenageParadoxal-1.zip

  Explanations (in English) about the paradoxical gears and the Mercier differential.

  Explanations about the
  paradoxical gears.doc




Video showing a paradoxical and normal gearset Z = 1



Video showing a paradoxical gear set, Z= 1, 2, 3



Video showing a paradoxical and normal gearset, Z = 2



Gear witchcraft!



Two teeth gearset with puzzling behaviour



The paradoxical gear explained



The bad gearset



Involute generation from pulleys and belts



Involute gear mechanical behaviour



Involute and rack



Involute gear animation



Multiteeth gearset



Spur gear train external and internal



Epicyclic gear train (type one)




Video showing a ten teeth helical gear with only one tooth remaining showing the driving path given by the helix, and the driving path given by a small slice of the same gear (so equivalent to a spur gear).



Helical gears axial load