Rik_uk3's a fan of these, Bernie Dawg too owned one, so with the endorsement of those knowledgeable stovies I set about looking out for a Primus Grasshopper and ended up with two, one a minter and another distinctly scruffy but serviceable, so one to be used ... ... and one to keep for high days and holidays The fuel is a butane screw-fitting canister often sold in do-it-yourself warehouses in the plumbing section, along with the butane blowlamps sold alongside it Having recently taken delivery of one of these from a supplier in China, I got to thinking ... ... if I were to screw it in position in the stove ... ... I've got a stove to take the cheap imported canisters with a bayonet fitting The instructions make provision for cleaning the jet nipple if the stove doesn't put out full power, a spring clip holding everything together The jet nipple is a Primus paraffin stove pattern and would be suitable for a No.4 model, since it's got a 0.23mm jet orifice The gas flow is controlled by twisting this component, clockwise to shut off A neat pot rest arrangement for small and larger based pans A central screw holds the burner components together Reassembled, flame shots depict the range of control on offer John
Now, having seen how well that works, I might be tempted to bid on one of those on fleaBay the next time one pops up, but I still like my 2260's better. Murph
Thanks Presscall for this post. I too purchased one of the adapters from China but didn't get the burn results I had expected until I saw your post today. My burner was missing the stainless steel mesh which I have just now added. Stove now runs on full power. Ian
It diffuses the gas stream, CC - sort of makes it hang around a bit and mix with the air (that's my grasp of scientific explanation there) - before it exits the burner holes. When I converted a Coleman 501 petrol burner (the dangerous one) to burn butane I found I'd to stuff brass gauze in the burner riser to get the same effect because without it the flame at the burner lifted right off and blew itself out. I concluded that vapourised petrol wasn't nearly so lively in getting out of the mixing chamber. John
A plague of locusts grasshoppers! I bought another one cheaply, just for the instruction leaflet and something I couldn't identify from the auction photo. It turned out to be this accessory, a spring clip to prevent the stove legs flapping about, ensuring that they stowed and opened up but wouldn't adopt crazy angles in-between. Makes the stove more manageable in fact, very effective John
The stove that came with that clip is the later version and has a plastic control valve wheel/gas cartridge housing instead of the alloy type in the earlier version. The fact that the control spindle in front of the plastic component is in where it is in the photo and not installed in the component is why I prefer the earlier stove with the alloy equivalent Here's what it's broken out of as a result of robust handling by a former user I've mixed feelings about the re-design of the clip on the newer stove which holds the parts of the stove together and enables dismantling to get access to a blocked jet nipple for cleaning. The newer clip (first photo) is slenderer and easier to remove and re-instal than that on the older stove (second photo) Downside is that whereas the older design had the secondary, but important, function of preventing the control valve from being screwed right out - not a good idea if the stove is lit at the time - the newer version doesn't offer that and this crude solution of a stop-screw on the stove frame is the alternative John
It's a right smart chap who thought of that little spring clip for making the legs stiffer as such. Care to be a mate, and tell me how thick that spring wire is, so I can bend up a few of 'em here? Murph
