Hello! I like to show you some photos of a burner connected to a tank for white gas (petrol) As you will see, the tank has its filler cap at the end of the tank. I have in my mind heard one collector told me about an early Optimus 8, having the filler cap at one end of its petrol tank, but I never seen any prove for that in my more than 20 years interest in camping stoves, so ................ My question are then; On what stove do this belong?
Interesting. No fixings to hold the assembly in a case. Location of the excess pressure release valve is poor, unprofessional even, since liquid fuel could be ejected with anything approaching a half-full tank.
Thank`s presscall, for your reply to my tread! You have listed up some of my thought`s around it Could it perhaps be some prototype?
Could perhaps be! But it seems to me that there have been a lot of work integrate the filler cap, and then the nickelplating on it......
Burner looks like Radius 46 with shortened fuel pipe - SRV looks like early Optimus and filler cap design indicates Optimus well before 8 appeared.
@Skauvill you peaked my attention i don't think "home made" applies and i'm not quick to adopt prototype (for what?). For now and maybe forever, it is a well made (& "finished") one off. Initially i come up completely empty. VERY interesting but i will lower expectations to the likely scenario that i will not have a role in solving this challenging one. i will follow this stovie-mystery with interest, good luck! With some comparisons fellow stovies might ID the burner, if it's one that we have seen. You make reference to a No.8 .. I pulled out a No 8 for comparison. on yours the spindle and valve (housing) around spindle looks bigger (vs No.8 more slender). basic/dumb question: does it have cleaning needle / geared spindle? [AND i presume with very close inspection no markings at all]
If it were discovered in the UK, I'd be tempted to suggest a link to model engineering. I've seen a couple of 8rs modified to serve as the heat source for a steam boiler in live steam models, and a couple more in magazine articles from 30-plus years ago. Tiny coal fires need almost constant attention, so other options such as petrol burners were used in model boats. Nowadays gas has taken over. The setups I've seen have been both modified units straight from the stove, or with homemade fuel tanks. Finish varied between roguh and ready (It's not seen in use) to highly finished as an excercise in craftmanship. Many model engineers are well used to designing and brazing up pressure vessels, finishing parts to a high standard and plating. A slight lack of knowledge of camping stove function could account for the questionable placement of the SRV (ideal for easy filling, less ideal if tank is more than half full and it goes off). Is there a lot of interest in model engineering/live steam in your part of the world?
Blackdog Thank you for your answers! I dont think is a lot more than elsewhere in the world for model enginering! This item comes trough an foreign employed at Optimus
Then I made some comparisons! That tank is fitted with a burner from Radius 46. The square on the spindle is 4mm. Incidentally, it is 3mm on the Optimus models for petrol. That burner has no cleaning needle function. I think a lot of good work has been done with the integration of the tank lid and folding around the supply pipe. In addition to a rumor that there was an early model Optimus 8, then with a tank cap on the side of the tank, as well as the fact that I got it from a former employee at Optimus/Sweden, I found reason to post this!
That makes some sense - Radius 46 was somewhat state of art right before Optimus 8 appeared and the needle mechanism was under the patent known from the 10/36 burner, so if Optimus(as usual) opted for an easy way to make a prototype to test size and function of the 8 without actually invest in tooling or elaborate one-off works - they just removed the needle from a Radius burner, modified an unmarked Optimus Lubrex oil can and TADAA! - they could test the Optimus 8 without actually make one.
...produced by (Optimus) nickeled brass manufacturing employee with the off-book benefits available totally makes sense, to me, TY. Re prototype, y'all may already be aware but per "Swedish Manufacturers" the 8 was offered in mid 30s. The 46 not til the 50s. Ok i'm good with my it's a one off, not home made and "...i'm not quick to adopt prototype...". That said it's fair to mention the Optimus 9, mid 30s, has the filler cap on the end of the tank. tag @Skauvill
OMC Yes, I`m aware of that Radius 46 are much laten! So as soon I recognice the burner as an Radius 46, I skip any thought`s about prototype for Optimus 8, so I put it in a box, maybe in the future there will be need for the Radius 46 burner! Thank`s!
sorry if translation adds to difficulty but re clarify your burner is no longer mystery? and it does or does not have geared spindle (cleaning needle option)? the 46 has cleaning needle re "a lot of good work done ...folding around the supply pipe" you suggest your burner supply pipe was modified? (no longer a match to 46, this was impression i got) the work done was 2nd to none btw (i only wish i had a pal state side with that skillset available). i think your stove is great !! can't get more rare (so far) tag @Skauvill ---------- re "so I put it in a box" . fwiw confession: i fairly recently put a very old kit in a box... then i wanted to chk something, and for now, i can't find it !! doh (too many stoves on shelves in boxes)
