I always like to learn new things, and as such Crank balancing has been on my mind, or more to the point how too balance a crank. Truing is no problem, or installing a new rod, but the balance part has me thinking, does anybody know how they do it? In my mind I would seperate the crank, remove the rod, piston, pin, circlips, lower rod bearing and washers, weigh them, re-assemble the crank with only the pin and attach a equal weight to the rod pin and then static balance it using a set of precision ways with knife edge wheels. This may not be the right approach but it seems to me that I read somewhere once that this was how it was done, any comments.