Welcome to the forum @Dinger . Where abouts in Denmark are you from? Myself, I live in one of the suburbs of Copenhagen. As for your questions....
I have been trying to look into this missing lamp. From what I can see is that model 109 is listed as being new in 1954. I am assuming it used the...
It could also be the 2nd November? Just for info, putting the month before the day is American, not English (or Australian).
You could also try a helicoil. Yes, the thread is M4. Remember that this is a blind hole and not to drill through into the tank. Doesn't help...
I have never seen the inside of one of these tanks, but if it is like other lamps, the inside edge is crimped in place. That means it can't come...
As MYN has said, the solder joint for the ring has given way. Originally it would have been soldered in place from the inside, but it can be...
Not a problem. It will be interesting to see what the lamp looks like under all the grime. :)
According to the Radius parts lists, the mica cylinder was offered as an alternative. The glass had part number 102/24 and the mica part number...
Not so easy as there is a metal shaft involved. Here you can see a picture of mine showing the wheel and shaft. It is the later version with...
@presscall What do you do with the inside end of the needle (in the jet)? You have to avoid an edge that the cleaning needle can catch on.
Another collector here in Denmark had the top cap pop off with a bang while the lantern was running. It had just been cleaned before being used....
You can get new pips for the NRV from the fettlebox. It is quite likely that a later lantern has a fully moulded pip and no brass cup. These are...
A 500cp jet should be part number 2672. The needle is correct with 2682. 2621 is the bottom valve or fuel feed valve seal. If the picture is...
That helped to get the 155 link. I can see that 2365 is in a 1979 price list but not in one from 1985. Unfortunately I don't have any price lists...
In all the Optimus catalogues I have, the NRV is listed as part number 262 in the old numbering scheme and 2250 in the new numbering scheme. The...
Running the lamp wouldn't get it hot enough. It works best to heat to a dull red and then into water straight away. The screw holding the J tube...
I have never had to do it myself, but would probably end up trying heat and quench. The ceramic flame spreader probably wouldn't survive, but it...
That's a very good find and in good condition too. As has been mentioned in other posts, there were two styles of filler caps. One with the pump...
Good to see another one. There don't seem to be many around. Could you take a photo of the back of the tank? Mine has had some serious repairs...
What I mean is that the valve in the pump tube (the non return valve NRV) is all that stops the fuel from coming out. On other petrol fueled lamps...
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