Something you don't see everyday, an old fixed fixed ring silent burner that has had its perforated screen fully replaced at some point in its life. The replacement appears to have been a home made job, with the result that what had originally been a No.5 size burner now functions as an economy burner! There are no diagnostic markings anywhere to identify a maker, but it seems very much like one of those fitted to Monitor No.5 stoves in the early 1920s (e.g. here). Out of curiosity I decided to see how well it worked, so mounted it up on a convenient Lux tank that was at hand. And? Utterly dreadful! At first it appeared determined to flick to under-burn at every and any opportunity. Then after various bits of fiddling I got past that, to a degree, only to find that I could only get it to hold any semblance of a stable flame with an extremely high tank pressure, and then only a horrible yellow conflagration. The only glimmer of hope was an occasional flicker of blue close to the lower burner perforation ring. Obvious thought - what about a change of jet But even the best burn so far really had been astoundingly heavily over-rich So why not go the whole hog and try a 0.23mm No.4 economy jet Just to see what that would do. And suddenly, wonder of wonders a total transformation: And best of all with sustained high tank pressure. Nothing about this messed up burner makes it look entitled to burn this well:
@igh371 Terrific stuff . What a history this burner has . Great work getting it to burn so well . My favourite kind of post . Cheers
What a great piece of 'needs must' repair work. Given the groove in the brass cylinder it must have been the object in the scrap box of the closest size to the original flame ring- undersized by the looks of things, and the overly large holes not helping gain the correct back pressure either. Well done for getting it running correctly, something which may not have previously achieved...
The methodology used by the Swedish makers themselves — removing the remnants of the fixed ring and fitting an inner and outer cap — is certainly simpler and very effective. Cheers Tony
