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  #11  
Old 10-19-2018, 08:41 PM
BigJohn BigJohn is offline
 
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Location: Gloversville, NY
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Quote:
Originally Posted by rvbuilder2002 View Post

Can you point me to the info that states they now recommend one?
Hi Scott. It was on the installation instruction sheet. I didn’t keep a copy but I will double check next time I see the owner.

Hey, I see EAA flew off the 40 hours on “our” airplane!
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  #12  
Old 10-20-2018, 07:26 AM
MED MED is offline
 
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The Plane Power installation instructions do say to "supply outside ram air to rear of alternator by the use of 1" scat tube or other suitable ducting." Nevertheless, if no one is doing this, the plans don't call for it, and there have not been a rash of failures, maybe it is not needed. I know Van's planes are not used for IFR, but I will - at least passing through clouds going up or down, so I am worried about directing water into the alternator. It might be better for me to just plan on more frequent alternator replacements, rather than precipitating one - no pun intended.
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  #13  
Old 10-20-2018, 03:27 PM
BigJohn BigJohn is offline
 
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Thanks MED, that was the wording I was refering to.
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RV-12 N37JP 120176 Flying since 2012.
One Week Wonder Build Team, OSH 2018.
VAF paid through 10/2018.
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  #14  
Old 10-20-2018, 06:33 PM
Bavafa Bavafa is offline
 
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There is a poll here for alternator reliability and it is worth looking it up and check it out if you have not. It does not specifically indicate if blast tube has been used or not but it has different brands/time and people have provided info on their experience and type of failures they have had.
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  #15  
Old 10-21-2018, 06:20 AM
MED MED is offline
 
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Quote:
Originally Posted by Bavafa View Post
There is a poll here for alternator reliability and it is worth looking it up and check it out if you have not. It does not specifically indicate if blast tube has been used or not but it has different brands/time and people have provided info on their experience and type of failures they have had.
Thanks. I Have not searched for overall reliability.
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