Question about balancing rotating assembly

As for the V-10 damper issue etc.....I'm well aware a lot of engine have the damper very well secured. I'm also aware a lot of engines have them far less well secured. For example, the mighty Slant Six - made by the millions in a hundred applications - in almost every case used no bolt at all. They just pressed the damper in place and off it went.

Did the V-10 damper come loose and allow the problems to happen, or did the problems cause the damper to come loose? I don't know.

So back to my point...the damper is there to dampen harmonics...but to suggest that the damper soaks up all the issues related to harmonics, 100%? No way. It's like a lot of parts - it does a job to a largely successful degree, but it doesn't do it perfectly.

In any case, this thread has had a lot of good inputs from a lot of different people and they all pretty much verify the same thing - when someone walks into a machine shop and orders up a 1/4 gram balance, they are fooling themselves and helping the machine shop owner put his kid Lewis through medical school.