This sounds like a fantastic way for me to screw up an almost perfectly good burner! If anybody attending Newark this year has done this before would you be up for helping me? I can bring on old black and decker workmate and a torch, but don’t have anything other than a small 2” vice. -R
@IRM cleaely I am not that expert like other members here, so my fix suggestion is more for logic than for personal experience in doing something like that. Nicola
Taking a fresh look at the burner with straightening in mind the underlying problem is clear. I don’t know the correct term, but the assembly that holds the jet and spindle is off centre: Perhaps this is related to the soldering work that’s evident where this assembly joins the vertical tubes. Interestingly, when I set the stove up for ethanol (2508 jet, air restrictor) things appear to work fine on a short test. Leaving it in this configuration might be the path of least resistance. -R
The penny finally dropped that this might be evidence (as has been suggested) that the jet is a factor. Having tried a further unused kerosene jet I still see the problem and have come to the conclusion that there is some potential for the severity of the problem to vary from jet to jet, even with the same jet removed and refitted as the flow of fuel is directed in slightly different directions. The more I look at the burner the more I think a poor fitting (or re-fitting) of the spindle/jet assembly may be a factor: But bending the smaller tubes, above, a fraction to the left is what’s needed. -R
The deformation on left tube suggests that someone before probably tried a bending with a lever against that tube. Maybe before it was more bent than now:
Thanks @Nicola Francesco Elia , I hadn’t paid much attention to that bend, I had assumed it was made that way. So perhaps the stove has been damaged and straightened in the past and the solder work evident in earlier photos is repairs resulting from that process. I think I will put this stove aside again and revisit it when I have gained some more experience (or a spare burner). -R