Andy J Posted October 27, 2022 Share Posted October 27, 2022 Recently painted a 17inch wooden prop with a black spray paint which certainly will not be fuel proof. Can anyone recommend a decent spray varnish to act as a first layer of defence to fuel? Have had little luck with proprietary fuel proofers as most seem to be useless so open to suggestions what others use in and around the engine bay and particularly on cowls which peel at the slightest whiff of fuel. Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted October 27, 2022 Share Posted October 27, 2022 (edited) Solarlac Clear coat is the only single pack fuelproofer / laquer that would stand up to engine bays etc but hard to get hold of unless you go to Solarlac and buy it as he won't post it. The only other paint that will withstand the fuel and speed / abrasion that a prop is subjected to is a two pack polyurethane paint. Edited October 27, 2022 by Engine Doctor Quote Link to comment Share on other sites More sharing options...
GrumpyGnome Posted October 28, 2022 Share Posted October 28, 2022 If it's a petrol plane, presumably clear automotive lacquer from, for example, Halfords would work ? Glow seems a different challange! Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted October 28, 2022 Share Posted October 28, 2022 The single pack automotive stuff will /should be petrol resistant although still not nearly as tough as the 2k laquer /paint. Note it does say "petrol resistant" so not totally petrol proof . Also the new E10 contains twice the amount of Ethanol very similar to the methanol in glow fuel . Might be worth trying a test piece before painting a nice new prop ? If you do decide to try the 2k make sure you wear protective equipment . 2K brushes out ok but don't over brush it, I often use it to fuel proof but always apply outdoors with the breeze blowing away from me . Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted October 28, 2022 Share Posted October 28, 2022 Unless you're careless, is there much likelihood of fuel getting in contact with a propeller? Maybe on a pusher but I've never noticed any residue on one- perhaps boundary effect and centrifugal forces keep those clean?. 1 Quote Link to comment Share on other sites More sharing options...
Andy J Posted October 28, 2022 Author Share Posted October 28, 2022 Engine is a 4 stroke nitro so would yacht varnish be any good? Never seen anyone selling 2 pack paints now since the COSH regs changed some years ago. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted October 28, 2022 Share Posted October 28, 2022 Agree with Martin, give it a spray with auto laquer to make it scratch proofish, jobs a good un. Quote Link to comment Share on other sites More sharing options...
cymaz Posted October 30, 2022 Share Posted October 30, 2022 (edited) Chroma Paints are fuel proof..IIRC. Someone will know https://www.rcworld.co.uk/acatalog/Guild-Materials-Chroma-Enamel-Paint-Aerosol-400ml.html Edited October 30, 2022 by cymaz Quote Link to comment Share on other sites More sharing options...
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