I bought two brass burners for 350/500cp lamps from South Korea. First, I'm testing them on a Petromax 829 ZB with a support bracket and a two-hole mantle. Has anyone here had experience with these brass burners ?
The background is as follows : For some time now , Petromax has changed the size of their clay burners , and the material is also very brittle. Steel burners are incompatible with the brass mixing chambers due to their different expansion rates. I've had good experience with 250cp ceramic burners. So now I'm testing 350/500cp brass burners for Petromax lamps. My iniitial conclusion after 30 minutes is that the lamp isn't as bright with the brass burner as it was with the old clay burner .This is perhaps because the holes are smaller, and therefore the overall burner opening is smaller. The diameter of the front face of the clay burner is considerably larger. I can't comment on their durability yet .
Burners are interesting aspects of this hobby. We see clay and steel/brass subsitutes, simple wire gauzes on steel tubes and then the Tilley/Bialaddin brass burners. Tilley burners rarely fail and if they do it, it is even more unusual to be the equivalent to the part you are investigating. Hopefully it will give years of service. Looking at your picture, there seems to be some burring round the holes. As this is often about gasflow it might be good to clean them up a little ? I keep considering an Alumina oxide nozzle for mine - but they are expensive. I theory they should last a long time as it is the same material as used in mig/tig welder nozzles. It will be interesting to hear how yours works gong forward.
@Fireexit1 You were right, many of the holes had burrs inside.The holes aren't crooked. The mantle with the two holes wasn't securely attached at the bottom. I've now fixed the problems and am very happy with the brightness.
