Tabular Method:

In this method a table is completed first as described below :

Later on completing this table, the given conditions are applied to find out x and y. Once x, and y are known, the revolutions of other elements may be estimated as these are described in x and y in III row in the table. For 1 CCW rotation of arm & gear S fixed.

                            y = + 1            x + y = 0                ∴ x = - 1

The rotation of gear t p

If t_s = 80   and   t_p = 40

The rotations of gear

For 1 CW rotation of arm and gear S fixed.

y = - 1         x + y = 0                 ∴ x = 1

The rotations of gear

The gear will make 3 rotations on its axis in CW sense. Had it been easy gear train gear P will make 2 rotations for one rotation of gear S.