Hi all, total newb to this, but you seem to be the "go to" guys for info, so please excuse me if this seems to be a totally dumb question. I've got a rather nice little Juwel 34 here, a gift from an elderly relative, and its my first venture into the world of liquid fueled stoves (been on the Hexy solid fuel and gas MSR stoves up till now) - and I have a question. I've leak checked it, and got a nice supply of additive free petrol here, so how the hell does it work? (must admit, I was looking for a pump to pressurise it when i first got it ) Cheers, James
Hi James, I am not one of the go-to guys, but here is what I know. This is the one that looks like a Svea 123, right? I don't have one myself, but I'd like to. My impression is that they operate much like a Svea 123 and self-pressurize as they heat up. For the Svea you prime it by putting a few ml fuel on the top of the tank, just under the burner and lite it up. After a couple minutes and before it burns out completely, you open the valve and if all is working well it will be up and running. The flame should settle down after all the priming fuel is burned off. If it does not pressurize, check the fuel cap gasket as this is what can go first on the Svea 123. Oh, and you may want to do this out side. Good luck.
Hi, Reggas offers good advice. You might want to consider using alcohol rather than Coleman fuel to prime the stove...it is slightly more controllable It would be a good idea to be outdoors for the first trials and you should consider having an empty metal bucket or pail near-by to put over the stove if it flares up uncontrollably or it all gets too exciting. However, you shouldn't have any problems. Good Luck, Best Regards, Kerophile
Many thanks for the tips. I think i'll give it it's first outing at work - as i've got all the stuff to hand to deal with it if it gets a bit out of hand - not to mention a ready supply of alcohol to prime it with. I must admit, i'm rather looking forward to using this stove after donkey's years of gas and hexy - now all i need to find is a period cooking pot to go with it.
Hi Kermit, I guess you should be looking for Military Mess tins. There should be plenty advertised on Military Surplus Sites. Enjoy your new stove; Best Regards, Kerophile
Welcome Aboard Kermit: All liquid stoves work on the same basic principal. The fuel has to heated until it becomes a vapor before it is ignited. This results in a nice blue flame rather than a sooty yellow one. The suggested methods of preheating the fuel delivery stem and burner head work fine. I sometimes get in a hurry and use one of those popular little butane "torches" to heat up the vapor tube. In those models without pumps the convected heat from the burner head will heat the fuel tank (fount) and pressurize it automatically. One needs to recognize this and NOT overheat the tank and create a safety hazard. Most of these "Svea types" have a pressure release valve to avoid an exploding fuel tank, but beware of the vented vapors in that they present their own hazards. Another thing to be aware of is to use small pans/pots on these types of stoves to reduce the reflected heat onto the fuel tank. If there is a problem in over heating some folks will place a reflecting sheet of aluminum foil, shiny side up, over the fuel tank. They are fun little stoves and very dependable. Have fun. Gordon
Yes, I can see exactly what you mean Gordon. If the pressure release valve vents, then a large cloud of fuel could hit the burner. Goodbye eyebrows (at the very least!) I think i'll get the pressure release valve tested at work just to make sure its working. Ian, thanks for the link, i've got a couple of sets of original wartime kochgeschirr already. They will fit on top of the Juwel quite happily, but their shape means they aren't quite as efficient for heating water as a round pan is.
Wikipedia knows how your stove works. This is about the SVEA 123, but the principle is the same. Note the link to this website on the bottom of the site It wasn't me who put it there, but it's funny
That Wiki article is a nice one, as is the one on "Portable Stoves" which is linked at the bottom of the article. That latter article in turn could use a link to CCS.
I'm new to the forum, but I know Kermit and I've just got hold of a Juwel 34 for myself after seeing his last weekend. Kermit made me do it
Hey, JD7, Well, I don't know whether to congratulate you, or send condolences, Sir!! 8) Welcome to CCS, and to stove collecting!! It's a dirty job, but someone HAS to do it, eh??!! 8) Have fun with your new Juwel, and how about posting some photos of it, so the rest of us can enjoy it, too? Take care, and God Bless! Every Good Wish, Doc
Here is the Juwel 34 It works the same as the Svea 123 and other similar stoves. Pour a little meths (alcohol) in the indentation on the top of the fuel tank and light to pre-heat the burner. When the flame goes out, open the fuel valve and light the gas coming from the burner. Below is a more recent Juwel stove using the same principle.
Hello thanks for the welcome. I will post pics of my Juwel 34 once it arrives from Germany. I have a feeling that I'll be looking for a few other stoves along the way. thanks for the information - it's my first dive into this type of fuel stove. Del aka JD7
