Vacuum distillation might be a practical solution. http://en.wikipedia.org/wiki/Vacuum_distillation I have used this method for refining...
Clarification from Base Camp: "the Optimus UK literature from the 1980's mentions this part as .32mm but this may be a typo because the standard...
This reply from Base Camp: "these nipples have been obsolete for some time. The best option may be Optimus #2502 which was the 'economy' nipple...
I measured a selection of wires and tried them on the jet. Turns out that a 0.35mm wire goes through with room to spare. I could try closing it up...
Looks like underburn is the consensus. I've sent an email to Base Camp for the jet, but they don't seem to list them. Would anyone else sell...
This is with the bottom row of holes blocked. [ATTACH] Looks the same to me, any thoughts as to what's going on?
It sounds like it's burning normally, not growling like I think underburn does - I have provoked underburn by pumping too early and it doesn't...
Hi All, I was wondering how hot this burner was really getting, so I borrowed a thermocouple to find out. [ATTACH] Does your No. 4 glow bright...
Hi All, Thank you all for your kind words, they are much appreciated. To Gary, the tube work filler is Unitor AG-60, a flux coated 55% silver...
I've been working on a Primus No.4, you might have seen my post on the burner tube replacement. Apologies, this is a bit of a large post. Well...
The whole burner: [ATTACH] I didn't end up replacing the U or the 16mm tubes. I still have the clamshell windshield and top plate to paint...
Yes, I got some of that off TradeMe. I found some useful references while I was at this:...
I'll post more on what has become a bit of a major project for me, but I thought I'd post what I've learned about the brass tube I've been using....
It turns out that the brass tube I have is low melting point. I can braze the old tube fine but this stuff melts easily. I was wondering if...
Hi John, Thanks for that, I was concerned that perhaps a thin wall would alter the conduction and the amount of vaporisation would change for the...
Hi, I have a Primus No. 4 that I need to replace the outer set of burner tubes.(not the jet loop) The tube I have may be thinner walled (I...
I have had good success with vinegar, cold, in an ultrasonic cleaning bath. Its quick and doesn't seem to have a pinking problem.
Firstly my apologies to cabriolet76, I seem to have hijacked your post! Thanks John for the repair tips. I'll post some photos when I've had a...
Got it :D/ $79, and its somewhere local to pick up.
I had noticed you were bidding :)
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