Pendulum To Rotary Power

This is the first stage of my project to convert pendulum motion to rotary motion. The next part will include a large neo magnet and driver coil to propel the pendulum. The driver coil will only have to operate for 50 seconds out of an hour because the driver coil pulses will only be 25 milliseconds in length. The period of the pendulum is 1.8 seconds which is determined by its length. Therefore, the coil will fire 2000 times in one hour. 2000 x .025 seconds equals the 50 second run time/hour.