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  #11  
Old 03-27-2020, 11:06 AM
amaris amaris is offline
 
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Quote:
Originally Posted by DanH View Post
They're just screwed to the longeron. No screws in the HS, top or bottom.
Great, thanks!
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  #12  
Old 03-30-2020, 05:50 AM
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DanH DanH is online now
 
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Whoops! Allen...told you wrong.

While preflighting yesterday I glanced under the HS and realized I had two fairing screws in nutplates on the underside.

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  #13  
Old 03-30-2020, 08:54 AM
amaris amaris is offline
 
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Dan, thanks for the follow-up! Did you form those as one piece and then cut in half or did you build as 2 pieces from the get-go?
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  #14  
Old 03-31-2020, 05:48 AM
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Dan, thanks for the follow-up! Did you form those as one piece and then cut in half or did you build as 2 pieces from the get-go?
Lowers were built separately from the upper:

http://www.vansairforce.com/communit...ad.php?t=22931
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  #15  
Old 03-31-2020, 07:10 AM
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AlexPeterson AlexPeterson is offline
 
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Originally Posted by DanH View Post
Whoops! Allen...told you wrong.

While preflighting yesterday I glanced under the HS and realized I had two fairing screws in nutplates on the underside.

Oh, Dan, the horrors of screws into the HS!!! My confidence in you is forever shattered!

Do the non-flush screws help with longitudinal stability?
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  #16  
Old 03-31-2020, 09:30 AM
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Oh, Dan, the horrors of screws into the HS!!! My confidence in you is forever shattered!

Do the non-flush screws help with longitudinal stability?
Yes, of course. Those of us with powerful RV's need more feathers on the arrow

Kidding aside, let me make a case. I use AN526C's with nylon washers for most glass, just because it's more durable long term. Countersunk glass always seems to end up with a wallowed out knife edge in the bottom of the hole, and chipping at the surface. A straight hole is stronger, and the nylon washers make life easy for the paint.

Admittedly it would not make much difference on something like this lower strip fairing, a part not heavily loaded or removed very often. On the other hand, I have a row of screws down the long cowl seams. After 1000 hours of heat and vibration, and being in and out a zillion times, the holes and paint remain in good shape.
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