that was exactly what I was also thinking about.... balancing the crankshaft for the forces and moments would have been quite a task... wondered how that was done....
Thanks Mr. BrianGar for the link. I had a look at that before and once again when you shared it. The file gives information about the results they have achieved and the working of the 2 modes. But I had problems in understanding the 2 modes that have been shown( the pictures aren't very clear )...