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Old 02-03-2011, 04:08 PM   #1
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elevator bolt insulation

Hi
Just getting to the point in my rear floor redo that I will be installing new elevator bolts. I was thinking of using some plastic tubing cut to length for each bolt. Tubing would slide over bolt and insulate the steel from the aluminum. Holes in the c Chanel may have to be enlarged slightly. Anyone tried this method of preventing the corrosion problem? Also thinking of placing thin rubber under the steel anchor plates for the same reason.
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Old 02-03-2011, 05:03 PM   #2
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We did not have any corrosion around our old elevator bolts when we redid our floor. Not sure that it's a necessary thing to worry about. I would think road vibration would cause the C channel edges to cut the plastic tubing anyway, and then you would have enlarged holes around your elevator bolts and a looser than desired connection between your C channel, floor, and frame.

Chris
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Old 02-03-2011, 05:24 PM   #3
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It takes moisture for the galvanic corrosion to happen. If everything is sealed up and kept dry, you should not have any problems.
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Old 02-03-2011, 06:03 PM   #4
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Would painting the steel bolts have any extra assurance?
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Old 02-03-2011, 09:23 PM   #5
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The elevator wide-head bolts were to bind the plywood - I didn't use them, my '73 used self-drilling & tapping screws on the plywood spaced every eight inches - but anywhere Aluminum was involved I used Stainless Steel bolts and extra-wide 'fender' washers. If you want to isolate anything from the aluminum, cutting plugs from the walls of two-liter pop bottles as washers would work nicely.
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Old 02-04-2011, 04:45 AM   #6
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Quote:
Originally Posted by tvanwave View Post
Hi
Just getting to the point in my rear floor redo that I will be installing new elevator bolts. I was thinking of using some plastic tubing cut to length for each bolt. Tubing would slide over bolt and insulate the steel from the aluminum. Holes in the c Chanel may have to be enlarged slightly. Anyone tried this method of preventing the corrosion problem? Also thinking of placing thin rubber under the steel anchor plates for the same reason.
Hi tvanwave;
If you are concerned about use Stainless Steel elevator bolts. The dissimilarity in metals between steel frame and SS bolts is negligible. Use 0.065 X 2" 3M liners tape to seal the ply from steel frame. Tape will seal any and all moisture from entering the contact area between frame and ply. As someone already mentioned it takes moisture for corrosion to take place. Thanks, "Boatdoc"
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