Simple and Planetary Gear Trains

An epicyclic gear train as shown in figure below, the internal wheels A and F and compound wheel C-D rotate about the axis O. The wheel B and E rotate on pins fixed to arm L. The wheels have the same pitch and the number of teeth are: B and E 18, C 28, and D 26. If the arm L makes 150 rpm clockwise, find the speed of F when (a) the wheel A is fixed (b) the wheel A makes 15 rpm counterclockwise.

In an epicyclic gear train shown in the figure, the internal wheels A and B and compound wheels C and D rotate independently about axis O. The wheels E and F rotate on pins fixed to the arm G. E gears with A & C and F gears with B & D. All the wheels have the same module and the number of teeth are: \(T_C=28,T_D=26,T_E=T_F=18\). Find: (i) the number of teeth on A and B (ii) if the arm G makes 100 rpm clockwise and A is fixed, find the speed of B (iii) if the arm G makes 100 rpm clockwise and wheel A makes 10 rpm counterclockwise, find the speed of wheel B.

In an epicyclic gear of the 'sun and planet' type shown in figure, the pitch circle diameter of the internally toothed ring is to be 224 mm and the module 4 mm. When ring D is stationary, the spider A, which carries three planet wheels C of equal size, is to make one revolution in the same sense as the sunwheel B for every five revolutions of the driving spindle carrying the sunwheel B. Determine revolution of planet wheel C. Determine suitable numbers of teeth for all the wheels.