This one is probably not the best for backpacking with a diameter of 32cm and a hight of 40cm. The tank capacity is 5-6 litre I guess. Compare it to the lamp converted Primus no 70 beside. I have never seen it in any catalogue so don't know the model number. This is the second I have ever seen, a frind of mine owns the other. Sievert made a lot och custom appliances so this is probably one. It has 4 feet and should obviously be fixed by them. Bo
I can't help you with the big Sievert, I'm afraid, but I'd be very grateful for more info re the Pri 70 lantern.
Yes, of course it is. Why did I miss that? Too long ago since I was looking in the cataluges. Thank you Conny. So now "only" trying to find the rest of it. The Primus lantern is a customized one made by a collecting friend in Japan. No high light output but a cute little lamp. Bo
Cute indeed. Priming cup and self-pressurising. Looks like a Svea 123R valve installed in a Primus 70/early 71 tank. The absence of any self-pressurising naptha lanterns on the market does rather suggest it’s not an idea that designers saw had merit. A 0.32mm or even 0.23mm stove jet would overpower a mantle and reducing the jet orifice to an appropriate size would restrict thermal feedback and consequently self-pressurisation output. A mini-pump and cap could improve matters. Sorry, Bo, a digression from your stove subject, but placing that tasty morsel in the photo was tantalising. John
Of course I should have but a 70 stove beside instead, but I had the lamp available and easy to put there. Your assumptions about the design sounds sensible. The only one I know about is Tito-Landi but I have no experience from that brand. This one is not optimal in its design, maybe gives 50cp or so. Bo
