I've been browsing around the site and didnt find a lot of info on my alemania vulcano stove. I did find it in the reference gallery. The vulcano roarer burner. It's a little beat up and is has a primus burner head on it. Although that might be original, i don't know. I bought it as a starter project. The stove seems to be a collapsable model, the burnerhead screws off and the fuel cap splits in to two parts to seal off the tanken both ends. The stove burnes bright yellow so i decided to replace the wick for a start. But there doesn't seems to be a wick. So my questions is: do collapsable models use a pipe in stead of a wick? Thanks
Hello Jobmeel I am not sure, if I have understood your post well, but if your stove is like this one, it has no wick. The yellow flames are probably caused by lack of pression. Find the leak: gasket of tank lid, the lead gasket where the burner is mounted, the gasket at the meth cup, the air screw or the pump NRV. Best Regards, Radler
Here's that Reference Gallery post on the stove. One of those but with an un-regulated Primus roarer burner fitted? I don't understand What you mean by 'collapsable' though if it's that type of stove. John
Hi, it's the one on the photo that radler posted.I have made a new pump cup for it. That works fine. I checked for leaks by pressurising it an dunking it in water, it didn't seems to have any. But the lead ring was deformed and the previous owner added one of these paper rings, which was in pieces,so i will check it again for leaks Can you replace the lead ring with a different type ring?
A lead washer is the tried-and-tested seal for that use. It copes with the heat as well as removing and replacing the burner when packing away or setting up. CCS site founder, Spiritburner, sells those seals or you could make one out of lead sheet. John
Hi again, So i replaced the old led ring for a better one. All seals are now checked and airtight. I decoked the burnerhead by heating and tapping, which resulted in some Carbon, but not very much. The stove now much easier to light. Probably also because ifound some water in the tank. Which might explain the great fireballs that i got greeted with the first time. It still runs with yellow flames though, be it less yellow. Could that be a worn jet, or do you think it simply needs the flame ring?
It certainly must have a flame ring, but I think it's overfuelling from a worn jet too. Try fitting a flame ring first. Check jet size with a jet pricker. A sloppy fit with a 0.32mm pricker and a new jet's certainly needed. John
The flame ring is necessary to conduct the flame and heat upwards towards a pot but it won't cause that much yellow flame if absent. I think John is correct about the over fueling from a worn jet but I also think the jet hole has to be seriously enlarged for that much over fueling. What are you using for fuel? Is it good quality paraffin or heating oil? Good quality paraffin is needed for perfect blue flames. Ray
Hello Jobmeel Nice flames for a garden party! On the first picture, the flame on the right side shows what is happening without flame ring: The vaporised kerosene rises some centimetres and burns blueish where it meets air. Rising higher, the gas stream gets slow and, together with the influence of combustion gases, the supply of oxygen is too weak. This makes the flame sooty and yellow. The flame ring is needed to create a channel, in which gas and expanding air is mixed and accelerated. When the stream of the mixture leaves the slot, more air is taken from outside and the supply of oxygen is optimized. The flame gets blue and hot. New standard flame rings and jets are easy to find in Britain or Germany. Best Regards, Radler
+1 with Radler. Also given much of the fuel is burning away from the burner it's possible the heating / vaporising of the fuel is less than it should be - burner could cool and spit liquid fireballs. Find it a flame ring is #1 priority
Thanks for the replies! @Ray123: i'm using clear "odourless lamp oil" on the back it says: paraffines C5-C20 out of crude oil. according to the fuel names table that would be kerosine in the USA, paraffin in the UK, and petroleum in other parts. Thanks for the explanations and tips. @Radler: it would be a nice but noisy gardenlight so i will get myself a flame ring and a jet pricker and try again.
I'm not that in to fuel in other countries. But I would say that "odourless lamp oil" sounds like the stuff you put in a wick lamp. I would not recommend that in your nice stove. Try to get hold of something that is specifically for pressure lamps/stoves. Best regards, Vidar
Thanks vidar, Did a little digging out of curiosity. The refined blank alkan parafin that petromax sells for use in their lamps is, according to it's data safety sheet, exactly that. "clear lamp oil C5 C20". Check it out: http://www.paracord.nl/Files/2/21000/21784/Attachments/Product/1G28L7DH429Q9392b730303N050q3448.pdf (it is in dutch so you might have to take my word for it) Chemically it appears to be exactly the same. (Correct me if i'm wrong). Except maybe for the price... I Probably will try it out some time though. Maybe it's extra superclean or something. Or maybe it's just another marketing rip off.
Ah, ok,then you'd probably be fine using that one. Fuel names in different countries can be confusing sometimes. This is a good guide on that matter! Best regards, Vidar
I don't like the sound of lamp oil. Here in the U.S. what they call lamp oil is thicker than kerosene and over priced. It may be fine for a flat wick lamp but doesn't usually burn well in circular wick center draft lamps or wick heaters. It does not perform well in pressure stoves at all. Maybe your product is different but I'd still suggest a different fuel. The yellow flames you have seem to be more than an enlarged jet would cause. You have a nice stove there. We don't see too many 3 legged brass kero burners from this company. Good luck sorting it out. Ray