Julian Thompson Posted February 20, 2003 Share Posted February 20, 2003 Just finsishing my new super lightweight non sagging seat runners (!). What a bloody sod of a job. Anyway. They're machined from nice aluminium, and I want to stop them corroding. I could take them to my local powder coating place but it'll take ages. I presume that spraying them with ordinary aerosol won't be durable. Anyone know of any paint that sticks well to alloy? Link to comment Share on other sites More sharing options...
Nick Woods Posted February 20, 2003 Share Posted February 20, 2003 I believe you'll need to get some etch primer first, your local automotive paint supplier should be able to help Nick P8MRA - Red and Black 1.6K supersport, back on the road at last. See pictures of it being rebuilt here Link to comment Share on other sites More sharing options...
Julian Thompson Posted February 20, 2003 Author Share Posted February 20, 2003 Is this the same as the "Zinc" primer available in aerosol form? ( I presume not!) Link to comment Share on other sites More sharing options...
Nick Woods Posted February 20, 2003 Share Posted February 20, 2003 Although I'm not certain, I think the zinc stuff is meant for steel and not alli. Your best bet is to go to a paint supplier and ask for ectch primer specifically for aluminium Nick P8MRA - Red and Black 1.6K supersport, back on the road at last. See pictures of it being rebuilt here Link to comment Share on other sites More sharing options...
metal mickey Posted February 20, 2003 Share Posted February 20, 2003 Julians, why not get them anodised? Etch primer is nasty stuff and you should use an air fed visor to spray it, it is a must if you want paint to stay on ally though. Mike Link to comment Share on other sites More sharing options...
Julian Thompson Posted February 20, 2003 Author Share Posted February 20, 2003 Yep, could anodise. I think for timescale though I'm going to powder coat. Thanks for your help. Link to comment Share on other sites More sharing options...
RiF Posted February 20, 2003 Share Posted February 20, 2003 Julian, Are you thinking of marketing these new non sag runners Richard in France Chassis and other starter kits arrive next Friday, my Duratec 7 is getting very close 😬 😬 😬 Link to comment Share on other sites More sharing options...
Super_Rich_Bernie Posted February 21, 2003 Share Posted February 21, 2003 Finnegans, of Waxoil and Hammerite fame, do an etch primer suitable for ali and use at home. I bought some in my local Homebase. Seeemed to work fine - a sort of reddy brown colour though. Jonathan Link to comment Share on other sites More sharing options...
stevefoster Posted February 22, 2003 Share Posted February 22, 2003 Etch prime is usually a two pack cyanide based paint that eats a ley in the metal. Any car body paint shop can sell you a jam jar full. I tried not to breath it in while doing my spraying. For H&S reasons proper air fed masks are needed for volume straying but for one small job you will be ok. This is what the nice man in Guildford who sold me the stuff told me. You only need the lightest of coats to key into the metal and provide a suitable base for normal paint. My racing pics, 7 DIY, race prep. Updated often here Photo's of the year here Hants (North) and Berkshire Area club site here Link to comment Share on other sites More sharing options...
Julian Thompson Posted February 22, 2003 Author Share Posted February 22, 2003 Thanks guys. I've said bollox to it and dropped them off for powder coating. £30 though. Oh well! I'll post some pix once they're finished. The final weight saving will be stupendous! My entire new CNC machined seat frams weighs only as much as the Caterham "U" channels under the car and since no load whatsoever is placed on the floor now I am replacing the floor with nice light carbon sheet. So weight saving there plus, obviously, 4 tonnes of steel drivers seat runner in the bin and the 2 bendy ali passenger ones, along with the 4 "U" channels and a brace of rivets and bolts! It's going to be so light I'll have to tie it down to stop it floating away 😬 Link to comment Share on other sites More sharing options...
Big Brother Posted February 22, 2003 Share Posted February 22, 2003 Julian, Can I have some of your scrap.....namely your old "U" channels? Mail me if available and I will cover postage/packing etc Cheers Steve Se7en-Up! Less is more! Link to comment Share on other sites More sharing options...
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