funlovincriminal 162 Posted September 29, 2021 Share Posted September 29, 2021 My Sail drive is coated in prospeed that is still in good nick. Fitting a new Gori folder in the next couple of weeks and have been told by more than one passer by that I should run it without anything on it for a season or so before sanding/applying any protective coating to it. I'm an inboard newbie so green as they come in this field... is there science behind this approach or should I take the sail drive back to bare metal and apply the Propspeed system to the whole lot? Seems sacrilege to sand the new prop 🤣 While I'm on it, exactly how far out from the sail drive should you apply non copper based AF? Thanks Quote Link to post Share on other sites
ballystick 72 Posted September 29, 2021 Share Posted September 29, 2021 I didn't put any on mine for 6 months, it was easy to clean off barnacles and then Propspeed, but the painter reckoned it didn't matter and he could paint it from new without any problems 1 Quote Link to post Share on other sites
waikiore 399 Posted September 29, 2021 Share Posted September 29, 2021 Dont sand your Gori, as someone who has sold more Gori props here than anyone -you can do as Ballystick says or just wipe with the solvent and Propspeed from new either way works. -hope you got a good deal on the Gori. 1 Quote Link to post Share on other sites
Jono G 41 Posted September 30, 2021 Share Posted September 30, 2021 The cheap boat costs are adding up. Why the Gori over say a 3 bladed Volvo prop? Quote Link to post Share on other sites
nath 1 Posted September 30, 2021 Share Posted September 30, 2021 Gori or not, I have seen a bunch of people claim that they shouldn't coat their new bronze props for x months when new. There's no science behind this; we choose the variations of bronze for our propellers because of how close to inert bronze alloys are in a corrosive environment. When coated with propspeed or other silicone products it will have the best chance of staying in it's zen-like state without material loss. While yes, an uncoated prop will have migration of some alloy components to the outside, this isn't beneficial in yellow metal. 1 Quote Link to post Share on other sites
funlovincriminal 162 Posted September 30, 2021 Author Share Posted September 30, 2021 12 hours ago, waikiore said: -hope you got a good deal on the Gori. 5 hours ago, Jono G said: The cheap boat costs are adding up. Why the Gori over say a 3 bladed Volvo prop? Ex owner of boat purchased a new Gori to replace the one lost between me viewing the boat and paying for it. Quote Link to post Share on other sites
funlovincriminal 162 Posted September 30, 2021 Author Share Posted September 30, 2021 12 hours ago, waikiore said: Dont sand your Gori, just wipe with the solvent and Propspeed from new either way works. 1 hour ago, nath said: Gori or not, I have seen a bunch of people claim that they shouldn't coat their new bronze props for x months when new. There's no science behind this; we choose the variations of bronze for our propellers because of how close to inert bronze alloys are in a corrosive environment. When coated with propspeed or other silicone products it will have the best chance of staying in it's zen-like state without material loss. While yes, an uncoated prop will have migration of some alloy components to the outside, this isn't beneficial in yellow metal. Awesome, thanks guys. I couldn't see the reasoning in marring a near perfect surface to try and make it more slippery. Past 4 boats all I've had to do is tilt the outboard and corrosion-be-gone! Quote Link to post Share on other sites
DoT 31 Posted October 2, 2021 Share Posted October 2, 2021 On 29/09/2021 at 8:40 PM, funlovincriminal said: How far out from the sail drive should you apply non copper based AF? Follow what the paint system says. My tin of Ultra 2 says no closer than 30cm to any part of the drive. 1 Quote Link to post Share on other sites
Fogg 427 Posted October 3, 2021 Share Posted October 3, 2021 6 hours ago, DoT said: Follow what the paint system says. My tin of Ultra 2 says no closer than 30cm to any part of the drive. I’ve always gone a bit wider to avoid possibility of interaction with a 50cm x 50cm square around the saildrive leg. 1 Quote Link to post Share on other sites
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