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Old 25 November 2013, 07:17   #21
HughN's Avatar
Country: UK - England
Town: Littlehampton, W Sx
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I stand corrected and educated!

"Can ye model it? For if ye can, ye understand it, and if ye canna, ye dinna!" - Lord kelvin
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Old 25 November 2013, 08:16   #22
Country: UK - Scotland
Town: Argyll
Make: Tornado
Length: 5m +
Join Date: Sep 2011
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Originally Posted by Chris Caton View Post
I guess main thing is to rinse salt water off after recovery
absolutely, although I should have really isolated the metals - especially the aluminium barbells - as the area of aluminium to stainless steel isn't as great, for example put a plastic sleeve over the bolt to stop contact with the aluminium barbell, and a rubber washer/grommet to stop contact with the galv clevis bracket. You see these isolating grommets quite often on stainless fixings for handrails etc for this reason.

This is all interesting stuff, but quite off-topic!

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Old 25 November 2013, 10:44   #23
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Country: UK - England
Town: Wirral & Caernarfon
Boat name: That's Enuff
Make: Revenger & Avon SR4
Length: 7m +
Engine: Honda 150HP & 50HP
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Posts: 4,079
from my experience with hv pole mounted switchgear near the nth Wales Coast it don't really matter what materials you use, the salty atmosphere will win, stainless, galvanised or whatever, stand back n watch it corrode, hence my comment about rinsing it off after recovery, I've seen very expensive stainless powder coated gear that's survived all sorts of test lab conditions destroyed in two to three years up a pole near Caernarfon, it's don't half make the switchgear manufactures cringe when they see their once lovely kit returned looking like it's been sprayed with rust
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Old 26 April 2014, 16:42   #24
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Country: UK - England
Town: southampton
Boat name: TOP CAT 2
Make: Scorpion 8.1
Length: 8m +
Engine: 250hp HO
Join Date: Aug 2003
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cant be bothered to read all other replys. i had a swing arm rollercoatser. the swing arm sat on its own landed wrong way round for the boat, and the rollers floated and the boat was frequentlyt sat on a roller end. A simple bungee over the back half, on the inside set of rollers held them down, and the swing arm down, then the boat pushed them into place. Bobs ur uncle.

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