Don H. Posted October 28, 2015 Report Share Posted October 28, 2015 A buddy is working on a car with early 10-inch Lockheed front brakes. He's noted the bleed screws appear to be copper. (Maybe bronze). In 40+ years of playing with Triumphs he's never seen such a thing. Anybody here know anything that might help? (I'll be able to see them and take pix in a couple of weeks.) Quote Link to post Share on other sites
Alec Pringle Posted October 28, 2015 Report Share Posted October 28, 2015 Brass more likely, as on my Doretti of long ago . . . . Cheers Alec Quote Link to post Share on other sites
Don H. Posted October 28, 2015 Author Report Share Posted October 28, 2015 Could be, Alec -- these are indeed on a Doretti. Copper is almost impossible to machine -- brass or bronze are much easier! Quote Link to post Share on other sites
BlueTR3A-5EKT Posted October 28, 2015 Report Share Posted October 28, 2015 (edited) I have come across bleed screws that look like they are copper plated on steel. Maybe a corrosion resistance coating. - I will dig in the drawer today to see if I still have any to confirm that they are magnetic. Peter W PS OK Just checked and they are copper plated steel (like OE manifold to head studs) Peter W Edited October 28, 2015 by BlueTR3A-5EKT Quote Link to post Share on other sites
Don H. Posted October 28, 2015 Author Report Share Posted October 28, 2015 Thanks Peter -- that makes some sense. I'll have a chance to test the ferromagnetic properties of these in a few weeks. Quote Link to post Share on other sites
stuart Posted October 29, 2015 Report Share Posted October 29, 2015 I have seen copper plated as well, I suspect thats more likely what they are. Automec do nice brass ones if replacing old steel ones. Stuart. Quote Link to post Share on other sites
Don H. Posted January 25, 2016 Author Report Share Posted January 25, 2016 Following up on this to close the loop. I had a chance a few weeks ago to look at those copper-colored bleed screws. They're exactly as you guys have seen. Copper-plated steel. First I've run across, but this is a lot earlier in the sidescreen timeline than I usually have a chance to explore. Probably an anticorrosion coating, as everyone thinks. Quote Link to post Share on other sites
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