Hi, Here's the problem. So basically I have an input shaft which has non constant Forces acting on it. Thus the input shaft speed varies with time. What I need is an output shaft that is speed controlled i.e. Speed constant with time. To add to it on the output shaft I have a large mass attached to the shaft. I tried thinking out the problem and would like to share it with you guys, maybe you guide me in the right direction. So I have drawn a simple sketch showing a way to solve this problem. Please see the attached. Basically as already explained I have an input cross which is subjected to non constant forces causing the input shaft to vary in speed. First of all to counteract the effect of inertia coming from the cylindrical mass I have added a counterweight and a pulley. The direction of rotation is the same as the input shaft. Since the shaft is going to start from stationary I wanted to achieve the constant speed as quickly as possible thus the introduction on the counterweight. Secondly, to allow the output shaft to achieve constant speed I included a governor. A pair of disk brakes are mechanically fixed to the governor. As one might expect as speed gets higher the breaks pads are pushed harder in the shaft causing the output shaft to slow. Conversely, like it will happen in the begining low speed will imply no breaking. So what do you think. I am in the right directions to achieve the desired outcome? Kind Regards, Sean.