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  #31  
Old 08-29-2021, 05:13 AM
JFCRV12 JFCRV12 is offline
 
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Location: Liberty Township OH
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Default Washer?

Stupid question: I purchased the new screws. Do I also use a nylon washer with them or just the screw?
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  #32  
Old 08-29-2021, 08:08 AM
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DanH DanH is offline
 
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Location: 08A
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Default

Quote:
Originally Posted by jrock836 View Post
I finally remembered to take some photos of my issues.. The photo where the spinner is visible shows the fine crack in the cowling..
That's a paint problem. Do you know the brand and product line of the primer and/or primer surfacer under that red paint?

FWIW, I've run AN526's and nylon washers over 1000 hours now, and this -8 cowl is loaded a lot higher than a 12. All the screw areas still look like new.
.
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  #33  
Old 08-29-2021, 08:12 AM
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jcarne jcarne is offline
 
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Quote:
Originally Posted by DanH View Post
That's a paint problem. Do you know the brand and product line of the primer and/or primer surfacer under that red paint?

FWIW, I've run AN526's and nylon washers over 1000 hours now, and this -8 cowl is loaded a lot higher than a 12. All the screw areas still look like new.
.
Dan how is your spinner attached? I don't see any screws. Camera tricks?
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  #34  
Old 08-29-2021, 09:16 AM
F1R F1R is offline
 
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Default Screwless Spinner

Quote:
Originally Posted by jcarne View Post
Dan how is your spinner attached? I don't see any screws. Camera tricks?
Im not sure if it can be searched with the new format forum, but it has been posted with great detail in photos and text.

Dr Glass Innovation did a nice job again.
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  #35  
Old 08-29-2021, 10:10 AM
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DanH DanH is offline
 
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Quote:
Originally Posted by jcarne View Post
Dan how is your spinner attached? I don't see any screws. Camera tricks?
Best answer is credited to Mel..."Speed!"

However, reality is found here:

https://vansairforce.net/community/s...ad.php?t=36101

https://vansairforce.net/community/s...04&postcount=5

https://vansairforce.net/community/s...31&postcount=7
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  #36  
Old 08-29-2021, 01:17 PM
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jcarne jcarne is offline
 
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Quote:
Originally Posted by DanH View Post
Well hot dog, never seen that before! Thanks for the links. Something to think about for my next build.

P.S. yours looks awesome
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Last edited by jcarne : 08-29-2021 at 01:25 PM.
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  #37  
Old 08-29-2021, 03:32 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Location: Hubbard Oregon
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Quote:
Originally Posted by DanH View Post
FWIW, I've run AN526's and nylon washers over 1000 hours now, and this -8 cowl is loaded a lot higher than a 12. All the screw areas still look like new.
.
Not a direct comparison though….
The RV’s-12 cowl is made from wet layup glass / epoxy, and it is also much thinner.
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  #38  
Old 08-29-2021, 03:33 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Quote:
Originally Posted by JFCRV12 View Post
Stupid question: I purchased the new screws. Do I also use a nylon washer with them or just the screw?
The current plans spec AN525 and a nylon washer.
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Scott McDaniels
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Van's Aircraft Engineering Prototype Shop Manager
FAA/DAR
RV-6A (aka "Junkyard Special ")
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  #39  
Old 09-01-2021, 12:03 PM
Charlie12 Charlie12 is offline
 
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Default screw spec per KAI

I posted this a couple days ago in another thread. Just trying to get the facts clear in my head. The current KAI for RV-12 posted on Van's website, p. 38-07, still says AN526C for the front six screws on the upper cowling. The comparable RV-12iS KAI, p. 37iS/U-12, says AN525. The factory notification process has never sent me any recommendation to change the screws on the RV-12. AN525 makes sense, and I will switch them next time I have the cowling off.
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  #40  
Old 09-01-2021, 12:59 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Quote:
Originally Posted by Charlie12 View Post
I posted this a couple days ago in another thread. Just trying to get the facts clear in my head. The current KAI for RV-12 posted on Van's website, p. 38-07, still says AN526C for the front six screws on the upper cowling. The comparable RV-12iS KAI, p. 37iS/U-12, says AN525. The factory notification process has never sent me any recommendation to change the screws on the RV-12. AN525 makes sense, and I will switch them next time I have the cowling off.
I saw you post, and posted an answer in that thread.
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RV-6A (aka "Junkyard Special ")
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