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3rd May 2010, 04:24

#217 (permalink)

fling-wing_1

Join Date: Apr 2005

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500 track and blance question

I did a track and balance on a 500D recently. At 60kts the vibes are .094 ips and the aircraft is glass smooth. At 120kts the vertical vibes are .113 ips - still smooth but with pulling more torque now the 5per is noticeable and shows up as a growl in your butt {insert joke here.}

I know most "working" 500's rarely get below .2 at 120kts so maybe most folks have never noticed this phenomenon before. Running a spectrum shows the 5 per is .579 ips. I know that once the vertical reaches .1 or so it unmasks the 5 per.

Tried posting over on JH but, well you know...

Any suggestions for minimizing the 5 per without roughening up the ride?

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