Corroded Window Screws - Page 5 - Escape Trailer Owners Community

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Old 01-20-2015, 01:12 AM   #41
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Originally Posted by Klem View Post
I'm puzzle why when 'we' find any defects there are a small group of folks that seem to discredit it.
I went back through the whole thread, and I didn't find anyone questioning that there is a problem with premature corrosion with the window screws on some trailers. The wandering discussion of trends in quality are not about the specific problem being reported here, it's just a natural sidetrack.
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Old 01-20-2015, 01:34 AM   #42
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Hi: All...Just wondering...is there a case of dissimilar metals here causing the corrosion/rusting or just poor screws? Alf
escape artist N.S. of Lake Erie
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Old 01-20-2015, 10:08 AM   #43
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We want data

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Originally Posted by escape artist View Post
Hi: All...Just wondering...is there a case of dissimilar metals here causing the corrosion/rusting or just poor screws? Alf
escape artist N.S. of Lake Erie
Since I don't have my Escape yet, but did bring the issue up with Reace because I found past reference to the corrosion problem, I'd like some details and clarifications. Please bear with me.

I gather that the screws are steel, inserted from the inside, to attach windows with aluminum frames. Correct?

Are the screws plated, or painted, or could the coating be powder-coat? (usually a polyester product)

Are there installations with stainless steel screws?

Does anyone know the size of the screws? (# x length)
Thanks.
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Old 01-20-2015, 10:34 AM   #44
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Originally Posted by gbaglo View Post
I can't lose the nightmare of the day my dad traded in a Mercedes 190D on a Valiant. I sat in the driver seat and couldn't avoid looking at the paint runs on the passenger door window frame.
Never forgave him.
Well, on the plus side, the old Slant 6 engines in the Valiants were reliable. But speaking of rust, the Valiant body rusted away so fast it hardly mattered how long the engine lasted.
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Old 01-20-2015, 10:54 AM   #45
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Originally Posted by dfandrews View Post
Since I don't have my Escape yet, but did bring the issue up with Reace because I found past reference to the corrosion problem, I'd like some details and clarifications. Please bear with me.

I gather that the screws are steel, inserted from the inside, to attach windows with aluminum frames. Correct?

Are the screws plated, or painted, or could the coating be powder-coat? (usually a polyester product)

Are there installations with stainless steel screws?

Does anyone know the size of the screws? (# x length)
Thanks.
The screw label on my bag of stainless says #8 X 5/8". After torquing of the heads I called Albanyfasteners.com and was told that the stainless going into aluminum frame was not a good idea unless you used a washer that was stainless on one side and some non-metallic finish on the other. Otherwise the dissimilar metals will cause corrosion. The OEM screws are anodized steel I believe; they are not powder coated.

In one PM I exchanged with a forum member he alluded to having a small plastic washer under his screws in one of the earliest 21's built. I don't have them and don't remember if the 2010 17B did.
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Old 01-20-2015, 01:21 PM   #46
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Originally Posted by Brian B-P View Post
They're better now: a recent GM car (to avoid comparisons between companies) is better built, better finished, more reliable, and longer-lasting than my parents' GM cars of 1971 and 1979.
I dunno 'bout that, my dad's 1955 Buick survived 3 teenage boys and was still going strong with about 100K miles on the clock when I went into the service.
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Old 01-20-2015, 02:49 PM   #47
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I agree that cars are more durable now than ever. When I was a kid, a car with 100k miles was considered exceptional and was likely to die at any moment. Today, most cars are still going strong at 100k miles (160k kilometres). All of the vehicles I have had in the past few years have been driven at least into the 160k to 220k miles range (250k to 350k km) before giving up the ghost. Many are driving their vehicles even further.
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Old 01-20-2015, 03:06 PM   #48
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Originally Posted by ice-breaker View Post
I agree that cars are more durable now than ever. When I was a kid, a car with 100k miles was considered exceptional and was likely to die at any moment. Today, most cars are still going strong at 100k miles (160k kilometres). All of the vehicles I have had in the past few years have been driven at least into the 160k to 220k miles range (250k to 350k km) before giving up the ghost. Many are driving their vehicles even further.
A friend who bought my 1990 Corolla would have make it to 300K miles easily mechanically, but Wisconsin road salt did in the frame at about 290K miles.
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Old 01-20-2015, 03:17 PM   #49
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Quote:
Originally Posted by Rossue View Post
The screw label on my bag of stainless says #8 X 5/8". After torquing of the heads I called Albanyfasteners.com and was told that the stainless going into aluminum frame was not a good idea unless you used a washer that was stainless on one side and some non-metallic finish on the other. Otherwise the dissimilar metals will cause corrosion. The OEM screws are anodized steel I believe; they are not powder coated.

In one PM I exchanged with a forum member he alluded to having a small plastic washer under his screws in one of the earliest 21's built. I don't have them and don't remember if the 2010 17B did.
Ross,
Thanks for the info. I've been researching this, and have found that a plethora of variables govern, in most of the discussions I've read. Among them, disturbance of surface coatings, moisture, salts present in the atmosphere. More later.

(P.S. interesting background observation: my sunroom, 6063 aluminum extrusions w/T6 hardening, held together with #6 SS self-threading screws that appear to be powder-coated, and where the coating comes off of the threads, shows no signs of corrosion through 4 years, 10 miles from the So.Calif Pacific coast w/ sea breezes and moisture most afternoons.)
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Old 01-20-2015, 06:31 PM   #50
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Originally Posted by escape artist View Post
Hi: All...Just wondering...is there a case of dissimilar metals here causing the corrosion/rusting or just poor screws? Alf
escape artist N.S. of Lake Erie
Just did a careful check of the screws in my trailer, made 3/14, and there aren't any signs of corrosion. So it looks like there was a window of time there when a bad batch of screws was used.

I've had marine windows with s/s screws, like 50 per window, on the exterior, not the interior. They were sometimes washed daily in salt water. The screws themselves were unaffected but after 10 years or so corrosion developed around them on the aluminum. Likely because the anodizing on the aluminum was destroyed by the screw hole and countersinking and the effect of dissimilar metals took effect.

I'm still a little surprised that screws in the interior would rust as much as they did given that most screws seem to be plated these days. But in this case, maybe not properly.

Ron
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