Originally Posted by
Hobbsy
It's not vibes but torsional impulses, the result of a light engine and strong power pulses, exacerbated by a rich LS needle. A weighty prop helps.
You should have said it with fewer words and saved the need for correction.
Sorry again but NOT. You said it is NOT vibration, it is.
I said it is vibration. Part from natural imbalance, part from torsional impulses.
It IS
vibration, your first statement was in need of clarification, like it or not.
https://en.wikipedia.org/wiki/Torsional_vibration
http://www.arpnjournals.com/jeas/research_papers/rp_2015/jeas_0915_2472.pdf