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Old 26-05-2019, 08:05   #1
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GFlex Below The Waterline

Hello!! I am re-epoxyjng a shim behind the stern tube housing on my boat. Anyone have an opinion on using GFlex epoxy below the waterline? I like it for the flexibility where there is sure to be vibration but didn't check too deep on below the waterline applications.

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Old 26-05-2019, 08:19   #2
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GFlex Below The Waterline

I would assume that ideally you would want to measure the angle difference and have a shim made at a machine shop?
Install it with 5200, that way it holds the angle exactly, doesn’t flex, is removable and re-usable?
You may need to remove that stern tube one day to get the shaft out?
They way it is stud mounted it may be best to remove it to replace the Cutlass bearing too? Studs make it much easier to remove than bolts with the nuts inside of the boat.
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Old 26-05-2019, 08:24   #3
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Re: GFlex Below The Waterline

Absolutely. But I have a time crunch issue. Our marina is flooding and they need me out of where I am and in the water asap. I have a repower coming up next winter and could tackle it in a more permanent way then.

In that light might GFlex make sense? Or the more rigid the better?
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Old 26-05-2019, 08:27   #4
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Re: GFlex Below The Waterline

G/flex 650/655 is versatile, liquid epoxy for permanent waterproof bonding of fiberglass, ceramics, metals, plastics, damp and difficult-to-bond woods, and even underwater when applied with specific techniques. Pre-thickened G/flex 655 Adhesive,or G/flex 650 that has been thickened with 406 Colloidal Silica (to a mayonnaise consistency), is needed.
https://www.epoxyworks.com/index.php...s-gflex-epoxy/
https://wessexresins.co.uk/images/da...ex_Epoxies.pdf
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Old 26-05-2019, 10:26   #5
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Re: GFlex Below The Waterline

Quote:
Originally Posted by Billy Buck View Post
Absolutely. But I have a time crunch issue. Our marina is flooding and they need me out of where I am and in the water asap. I have a repower coming up next winter and could tackle it in a more permanent way then.

In that light might GFlex make sense? Or the more rigid the better?


For a temp fix I believe it will be fine.
I’d put a release agent on the stern tube though so removal won’t be as hard
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