This the only small stove I ever managed to find in Australia. Comparing with the pictures in the Gallery, a fair number of parts look to be original - though the flame spreader is marked PRIMUS and has a repair to a broken leg, and the windscreen is different...=. Are there any features which would date it? I think the jet is somewhat oversize - are there any sources of graduated prickers? Regards Murray
I don’t know what you have in mind there Murray. Do you mean a gauge to check how oversized a jet is? An oversized jet puts yellow flames in amongst the blue. A very oversized one and vapourisation won’t happen - smoke, flames, liquid paraffin fills the priming cup and ignites. Age of stove? 1950’s but I couldn’t give you a year. John
What I had in mind was something like a set of feeler gauges that would distinguish a range of jet sizes... Probably of limited utility though. I have lots of yellow flames - getting close to no vapourisation. Murray
Ah, right. The ‘feeler gauges’ concept describes part of the function of jet prickers. To prick, or clear, a blocked jet is the primary purpose, but also to confirm it’s still on specification. Two common sizes, 0.23mm that would be right for your 1/2-pint RM, and 0.32mm that fits 1-pint stoves and others. I suspect that a 0.32mm jet pricker would pass through the RM’s jet. My cure for an oversized jet is maybe a bit specialised. I silbraze a length of hypodermic needle with a bore of 0.23mm into the oversized jet orifice ... ... cut the excess off and polish the tip.
