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  #11  
Old 07-30-2018, 06:03 PM
AeroDog AeroDog is offline
 
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Quote:
Originally Posted by rocketman1988 View Post
Yep, better remove any dissimilar junctions throughout the airplane!
Including all nut plates.
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  #12  
Old 07-30-2018, 08:17 PM
Scott Hersha Scott Hersha is offline
 
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TD rings slow me down about 15 knots,,,, I think...... feels like it anyway.....
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  #13  
Old 07-30-2018, 09:15 PM
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N941WR N941WR is online now
 
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Quote:
Originally Posted by benfra View Post
Good Hint! Yes electralisis still exists!
Exactly

Quote:
Originally Posted by AeroDog View Post
Including all nut plates.
All the other steel parts are coated, including the nutplanes and don't cause dissimilar metal corrosion.

Go ahead and leave those tie down rings installed and then try to remove them in a few years and report back. It will only get worse over the life of the airplane.
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  #14  
Old 07-31-2018, 09:57 AM
AirHound AirHound is offline
 
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Quote:
Originally Posted by Scott Hersha View Post
TD rings slow me down about 15 knots,,,, I think...... feels like it anyway.....
15 Knots.....Dang, who wouldn't take them off!
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  #15  
Old 07-31-2018, 03:04 PM
arffguy arffguy is offline
 
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Default Paint?

I painted my tie-down rings.........but I haven't tried to screw them into the wings yet.
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  #16  
Old 07-31-2018, 03:54 PM
RFSchaller RFSchaller is offline
 
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I see many that are concerned about corrosion live in some humid and wet environments. Out here in Phoenix with a hangar I haven’t seen any corrosion issues on my Cherokee (29 years here) or my RV-12 (6 years). However, I used to worry about glass transition temperature when I had a WAR FW-190 at summer air shows sitting on the ramp.
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  #17  
Old 07-31-2018, 04:58 PM
AirHound AirHound is offline
 
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Originally Posted by RFSchaller View Post
I see many that are concerned about corrosion live in some humid and wet environments. Out here in Phoenix with a hangar I haven’t seen any corrosion issues on my Cherokee (29 years here) or my RV-12 (6 years). However, I used to worry about glass transition temperature when I had a WAR FW-190 at summer air shows sitting on the ramp.
Glass transition temp?
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  #18  
Old 07-31-2018, 05:17 PM
rocketman1988 rocketman1988 is offline
 
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Location: Sunman, IN
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Default Everything?

Yeah, everything is coated. Go ahead and believe that, if you want. What about the stainless firewall and all the aluminum rivets and angles attached? And how about those cad played bolts? You know, the ones where the cad playing is removed during the tightening process... Look at a standard washer that has been previously tightened. You will find the cad plating has been removed.

Point is, dissimilar metals are a fact of life. Preventing corrosion can be as simple as applying a light coat of grease or anti seize to the threads...
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  #19  
Old 07-31-2018, 10:32 PM
RFSchaller RFSchaller is offline
 
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Doug,

The older fiberglass epoxies lost strength if overheated. The critical temp was called glass transition temperature, and 30 years ago people tried to avoid painting dark colors on the fiberglass so it wouldn’t sit in the sun and lose strength. In Phoenix we can actually fry an egg on a dark surface on the worst summer days. GTT was something you had to think about.
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  #20  
Old 08-01-2018, 06:58 AM
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DanH DanH is offline
 
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Quote:
Originally Posted by RFSchaller View Post
Doug,

The older fiberglass epoxies lost strength if overheated. The critical temp was called glass transition temperature, and 30 years ago people tried to avoid painting dark colors on the fiberglass so it wouldn’t sit in the sun and lose strength. In Phoenix we can actually fry an egg on a dark surface on the worst summer days. GTT was something you had to think about.
Still do.....
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