My Hasag 34 is missing its nipple jet. Now I know that Petromax jets are too small. It has an outer thread diametre of 7.5mm, in fact an optimus jet has the same thread. Other than finding a Hasag jet replacement, is there any other make I can use as a substitute, as Hasag parts are rare as hen's teeth in New Zealand.
That may be a stupid idea but would it make sense to make (order?) an adaptor tube for a Petromax nipple or any other nipple that has the right diameter of the jet. Does the whole vaporizer tube have different threads diameter than Petromax one? Maybe you can change the whole vap?
You describe exactly what I have been thinking of as a last resort. Thankfully I have a 150CP Geniol which will enable me to see if this is a possibility.
Here is the Hasag with a 150CP petromax vapourizer fitted. The petromax vapourizer is slightly shorter than the Hasag so had to trim the guide rod slightly so I could get full rotation of the control wheel. Found that although the petromax vapourizer nut thread is the same as the Hasag, it was very tight to screw on so tightened and released the nut several times before I was satisfied it would make a good seal. Got full brilliance before fitting the hood, after which, had to position carefully in order to acheive complete combustion, otherwise lack of air flow created flaming outside the mantle.
In order to provide more air flow I drilled the lower holes on the hood to 4.5mm and now it is burning much better.
Amazing that such a basic design flaw should go unnoticed by the manufacturers. I don't think it's confined to Hasag, though - I think I've seen this sort of thing mentioned in connection with other lanterns of the same basic design. Perhaps it explains why I can never seem to get any of them running properly. Not that I'm going to be drilling holes in any of them any time soon...
This is a common problem. I think the reasons for it is the lamps are older and probably not set up right so they don't aspirate as they should or perhaps the parts are worn and affecting gas flow. It is also possible the fuel is partly to blame. As we have discussed elsewhere modern kero does not vaporise as well and may require better air flow to burn right. Normally I would say a poor burn but better with hood removed means the air gap or jet size is not right but even when set right and with a new jet the problem is sometimes still there. I have never found a satisfactory solution to this and I am not about to start mutilating lamps to make them run better so generally I live with it. ::Neil::
Given that this Hasag no longer has its mica globe or bail and now the vapourizer has been replaced with a Petromax one, makes it a bit of a mongrel I would have thought from a purist's point of view. Enlarging the existing holes slightly has done the trick and is only a slight cosmetic change. Normally I would get the parts, even cannibalise them off an old lantern but here in NZ, Hasag is probably rare as hens teeth. In fact this is the only one I have come across in seven years of collecting. Even advertising for parts on the forum has not proved successful in getting the original parts.
Well it's your lamp and therefore you can do what you like with it. Might not have been the way I would have dealt with it but I don't have a problem with changing things to make it run right. Often lamps were modified down the years to keep them running and we still do it today. I might get upset if someone trashed a one off rare example but this is a HASAG 34 and whilst they are a nice uncommon lantern it is not by any means the Holy Grail so making changes is fine. ::Neil::
