stuart fields
Well-Known Member
I mounted accelerometers on the zerc fitting holes on bearings on my tail rotor drive shaft. I got some interesting vibration spectrum data but then the question arose: How do I read this? If I have an outer race with a defect how does it show on the spectrum? Also what frequency will bad rollers show? I found a write up complete with a long list of bearings and their "Factors" to which you could apply the factors to the input rpm and find the frequency of that particular element. I now find that I've "Lost" the list.@#$% handy tool this @#$% computer. The list has been saved but I'll have to find where.
Stuart Fields
[email protected]
Stuart Fields
[email protected]