REFLECTOR: Vibration.

[John Dibble]

I have a spare set of blades if you want to see what good tracking 
blades will do.

John

On 5/9/2014 12:18 AM, Kurt Winker wrote:
> Looking for input. Engine ran fine w-out the prop. Started it with the 
> prop....wicked vibration.
> Took prop off.. Vibration gone.
> Sent prop back to IVO....1-blade was 1-gram out of balance.  They 
> corrected & returned.
> Since I noticed that, when viewed from the side, the blade disk 
> tracking seemed to move for & aft when you looked at the top of the disk.
> When I got the blades back, I reassembled & reinstalled. Then I 
> checked the blade tracking. Was off a tad, and I corrected that. Also 
> checked the blade angle with a protractor, and all seemed good.
> Looking for things to check.
> Engine: 4.3l- V6 90-degree engine...
> Belt drive reduction unit:  1.7:1 ratio.
> 76"- 3-blade.
>
> The fact that the blade track for-aft seems to change, really gets my 
> attention.
> Changing RPM doesn't help...the vibration increases in frequency with 
> rpm, but no better or worse.
> Changing the prop pitch has no effect.
>
> All else is well.... Hope I can figure this part out.
>
> View from the side: http://m.youtube.com/watch?v=Nr-KLXgco38.
>
>
> Kurt
>
> Sent from my iPad
>
>
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