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Google is your friend. :D

If the aircraft was ever registered in the US (N number) then there are records. The FSDO has a system called SPAS and under MSAT B are aircraft records.

You can request the records based upon the serial number of the aircraft. A polite call to aircraft records will get you a CD.

James, it's not "knowing the balancer" that makes the difference. There are many factors in dynamic balance. Worn engine mounts will effect the balance as will engine mounts that were not installed correctly. Worn spark plugs will effect the balance, weak plug wires, old magnetos, etc, etc...

Lots of variables, just because you got lucky on your two planes doesn't mean they all work that way.

Doesn't work that way James. :rolleyes2:

Regular prop maintenance is a good thing. A static balanced prop that is done correctly also helps. The dynamic balance is more for the hardware (spinner, backplate, etc) once installed as these will cause the rotating mass to imbalance. Some spinners are way out of balance when delivered...

To a degree it will have an impact on balance as it will show up as vibration. IOW, if you show up with a sick engine, no amount of dynamic balancing will improve vibration.

Transducers I used were piezoelectric.

I used an Aces 2020 ProBalancer when I did dynamic balancing. We never put an transducer on the back of the engine, it was mounted on the nose of the engine at either a 180 degree mount or a 270/90 degree mount. Then the electric eye was mounted with a piece of reflective tape on the back of a...

Most manufacturers only concern themselves with the static balance. And the majority of GA planes never do a dynamic balance. Get into the turbo props and dynamic balance is used more.

Static balance, yes. We are discussing dynamic balance, which is done attached to the engine on airframe with all hardware attached.

Not gonna happen. :nonod:

Depends. I've done it in little as three, plus a run to confirm. Then I've had times it took several more before it would dial in.

The problem with doing a dynamic balance on a new engine is it isn't very good with the starts and shutdowns that need to be done repeatedly while finding a solution. Break in the engine, then do the balance.

Actually the Garretts air start fairly easy. Many years ago we would do a functional flight test on Metros where we would do a shutdown, feather and restart.

FTFY.

Nope, never flew the "Barbie Jets".

Naaaaa.....Some Windex and a paper towel and yer good to go! :yikes:

The pilot in the OP is not making any "extreme" control movements for that phase of flight.