Hi Mathew,
it seems we are talking about the same thing.
I usually tell the students/aspirants that Omega frequencies occur every time one of the blades passes over the tailboom. Then I explain that the weights mounted under the belly cowling are there to counter these very frequencies.
So that corresponds with what you have said. However I was actually looking for a somewhat 'deeper' explanation of the whole affair.
You have probably met your share of students as well and know how intricate they can be at times when it comes to 'dig deeper into the subject'.
Or am I too zealous in finding out all the mysteries behind Omega x3
