LevelWing Posted March 26, 2016 Report Posted March 26, 2016 While stripping the rudder and elevators, we noticed a green liquid substance that would drain out when we washed it. After we painted and found them to be out of balance we had to strip them again. In between, that green liquid dried and hardened. It turned to some sort of hard powder. It would fall out of the surfaces if you tapped on them. Today when we washed the surfaces the green substance turned into a liquid and started pouring out. At first I thought it may be some sort of anti-corrosion stuff but I would think that wouldn't be water soluable. Any ideas what this stuff could be? Also, depending on what it is, I'm assuming it could be part of the problem with the surfaces not being balanced. I have a picture but it's too big to post from my phone so I'll have to post it later.
MB65E Posted March 26, 2016 Report Posted March 26, 2016 Sometimes the stripper byproduct changes the color of things. Mine for instance was yellow. Were they hey heavy at the trailing edge? My ailerons were really heavy and almost didn't balance. Might hang them differently when spraying. Hang them nose down. The stripper could be getting into the primer and causing a green substance?
LevelWing Posted March 27, 2016 Author Report Posted March 27, 2016 Yes, they were heavy at the trailing edge, but they were hung and painted the recommended way. It's not stripper and primer mixing, whatever this is, it's coming from inside of the control surfaces.
Mooneymite Posted March 27, 2016 Report Posted March 27, 2016 Green colored goop? Obviously it the rotting AMU greenbacks that have previously been lavished on this plane. 2
LevelWing Posted March 28, 2016 Author Report Posted March 28, 2016 (edited) Here are the pictures: I don't think it's a bug nest, either. We cleaned them again today and more came out. The first picture is what the green stuff looks like when it has been washed and comes out of the surfaces. The second picture is what the green stuff looks like once it's dried. Edited March 28, 2016 by LevelWing 1
N201MKTurbo Posted March 28, 2016 Report Posted March 28, 2016 It may just be zinc chromate. They probably sprayed the inside with it. It would be better to leave it there.
MB65E Posted March 28, 2016 Report Posted March 28, 2016 Mine looked almost the same. Stripper chemical reaction with the paint and primer. I rinsed all of mine with baking soda to neutralize the corrosion with the stripper. Keep risnsing. I bought drinking water to rinse it vs LA tap water. Best, -Matt
LevelWing Posted March 28, 2016 Author Report Posted March 28, 2016 (edited) 2 hours ago, N201MKTurbo said: It may just be zinc chromate. They probably sprayed the inside with it. It would be better to leave it there. One of the concerns is that this may be causing additional weight, causing it to be out of balance. When I stripped the control surfaces the first time, the surfaces stood up on end once the weight was removed. This time they still lay flat, as if there's some sort of weight at the leading edge keeping it down. 1 hour ago, MB65E said: Mine looked almost the same. Stripper chemical reaction with the paint and primer. I rinsed all of mine with baking soda to neutralize the corrosion with the stripper. Keep risnsing. I bought drinking water to rinse it vs LA tap water. Best, -Matt I've been rinsing it but it seems to be never ending. There's a lot in there, whatever it is. Edited March 28, 2016 by LevelWing
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