PA39 or PA30 CR Tach Tech Tip

PA39 or PA30 CR Tach Tech Tip

Postby N3322G » Sat Feb 27, 2010 1:34 pm

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IMG_2212.JPG
Not my twin's engine but it does show the problem nicely. Double click for a clear view
IMG_2213.JPG
A different angle where you can see the top left corner of the coppery-colored part of the tach drive reverser in contact with the vacuum pump
Pat

Patricia Jayne (Pat) Keefer ICS 08899
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Postby ComBE » Sun Feb 28, 2010 4:42 am

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Postby steen » Mon Mar 01, 2010 8:43 am

Thanks, Pat.
Another item to file away in my limited storage space re future possible problems. The Twinkie is such a simple aircraft so how did it get so difficult in minute details?
Good thing she's such a lady to fly!!!
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Postby 9089P » Mon Mar 01, 2010 5:19 pm

Hi Pat,

I've just spent a fair amount of time helping a friend sort thru his pa30 vacumn system including replacement of one of his vac pumps as well as most of the vac lines looking for a phantom leak. In looking at your pics it seems to me that the pumps you have (Airbourne) might be slightly larger than the Rapco 215CC's that are on his plane. I think he would have slightly more room for the reverser if needed.

Good luck, Don
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Postby N3322G » Mon Mar 01, 2010 5:44 pm

Don, thanks for the good information. Now folks have an option that might avoid the problem entirely. Thanks for sharing.
Pat

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