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Originally Posted by tnoice
Jake,
Do you keep track of the IMS bearings that you have replaced? With this information, do you know the amount of miles that have been placed on your bearings or the number of hours of track time they have been exposed to?
Also, how often do you suggest replacing the IMS bearing when using a LN bearing, to be on the safe side?
Thanks.
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Yes, we keep EVERY SINGLE bearing.. We serialize each, log the owners name and mileage and other data about the engine. We have done this since day one.
The vibration sensor is something that I considered as well. As a Helicopter Crew Chief I used to test aircraft after work was done and the units of measurement was "IPS" or "iterations per second".. This would be one way of noting a trend in a M9 engine, however there are other things that can lead to vibration, not just the IMS.. Even a tank of bad gas can increase vibration.
Anything is better than nothing, but what we are doing is definitely going to give the most early warning possible.
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