The extra condensation makes sense to me:  there's more H2O around due to the more complete combustion.  

The eye watering - not as clear, but a perfect phenomenon for rampant speculation.  A couple questions:

I don't have Facebook - what were the modifications and what materials did Pete use to make them?  

Do your eyes remain irritated as long as the burner is going, or only for the first few minutes after it's lit?

David Porter wrote:

Just discovered this interesting thread. My two cents - I bought an Origo two burner forr a yacht I had in HK and was very happy with it for the three years or so before I sold the boat on leaving the country. Well made, and it cooked fast enough for my admittedly modest requirements.The only issue was that the flame was sometimes a bit hard to see in daylight but you got used to it. I would certainly buy another one, though I think they are pricey for what they are.

David

Hi David

This topic seems to have become subsumed in this thread.  (I would really love for someone to volunteer to go through all the various fora and reorganise them.  For example, there are a lot of topics on the General Forum, that really ought to be on the Technical Forum.)

It's good to hear your positive comments.  If you look at the thread I've just linked to, you will see that David Tyler reckons he has improved the Origo - although I think, if anything, the flame will be less visible.  This can be a problem with an alcohol cooker.  Holding a hand over the burner usually clarifies the issue!

Pricey for what they are?  Probably.  On the other hand, I don't suppose that the demand for them compares with gas cookers and the carriage and import duties were no doubt a significant part of the cost.

Annie Hill wrote:

Neil Tanner wrote:

I don't know if this link has been mentioned or if will be of any use.  It's been helpful for me since I use kerosene for cooking and heating on Sea Elf.  https://classiccampstoves.com/

Yup, I discovered it some time ago when investigating pressure alcohol stoves.  All sorts of interesting stuff.  It's amazing how many people appear to collect them rather than simply to use them!!

The folks in the group were really helpful when I had issues with my heater.  In fact one of the fellows in the UK sent me misc. stuff no charge to get the heater running properly again. 

I guess if it exists, someone's gonna collect it, some just like to look at the stuff on their shelves...others like to use 'em.  Actually, there is a section in CCS where the guys will show meals they're cooking with the their refurbished stoves......my mouth drools looking at some of the meals!

I don't know if this link has been mentioned or if will be of any use.  It's been helpful for me since I use kerosene for cooking and heating on Sea Elf.  https://classiccampstoves.com/

Arne Kverneland wrote:

PS: A single-burner 2kW Origo 1500, plus a single-burner Hpv-salsa seem to me to be a good combination for a serious cook.

After all, my boil-test showed that the Origo cooked 1/2 litre in 4:39min while the Optimus 111 did it in 3:45min after preheating. David reported on 20.9 that his Maxie burner took 5m 48s  to boil the same amount. 

Arne, I'm not sure you're comparing apples to apples.  When I did a head to head with the Maxie and the Origo using the same pot/fuel/water volume/temperature, the Maxie is more efficient in fuel use and also faster.  However, the Origo is not so far behind, it still is a very useful stove.