What does the third hammer do ?
We recently had the hammers (anti vibration weights) tuned on our ec120'
Which has made a vast improvement, although as I trundle round at 70kt
I think I need to retune to 412 rrpm and not the 414rrpm we set them at !
My question now that I understand what the two under the cab do, is what does the third weight which is horizontal and under the instrument panel do ?
How is this one tuned ?
What vibration will it take out ?
Any help appreciated
Nelly