Just got my first pressure lamp - now what to do?

Hello,I bought this lamp as a Optimus 300 and not sure if this is the same as the Petromax.
I can not see any way to adjust the air-gap on my lamp, should there be any adjustment mechanism?
I guess since the lamp is probably running rich the gap should be increased somhow, is that correctly understood from my side?
Thanks for support!

 

There is a way to adjust the air gap by adjusting how far in the burner nozzle screws on the Jtube. From there there should be a jamb nut on the opposite side of the thread that secures it tight on the cross member of the inner case/sheath/hood.

Overflame means not enough air is reaching the burner, raise the gap to proper height.

If anyone can correct me I believe it is around 11-12mm for a 300cp burner?
@Turbo_100

 

Thanks Dashwood

I took a pic of a similar Optimus hoping it would bee the same for the 300



im sure other members will help with the air gap and maybe some fine tuning

regards
pb

@Turbo_100

*Edit* the first lantern in this thread (first page) is an Optimus ?

 

@Turbo_100 @podbros

Excellent photo example, some are square nuts, others are hex but shouldn't matter.

To increase the gap, loosen the burner nozzle several turns while pushing up the Jtube from beneath. This consequently raises the jtube and jamb nut up the more slack you give, in the turn this increases the air gap. Once desired gap, tighten down the jamb nut which will keep it at the proper height and gap.

To reduce the gap, perform the inverse. Loosen jamb nut, let the tube drop to desired gap, then tighten the burner nozzle.

 

Hello,
Changed the internal piece (where the mantle is mounted) from another working lamp and it worked better,
then changed the same piece from another (very old) lantern and it was better thenthe original.
So -
Can it be related to the needle hight in the nozzle?
Related to the hight between the nozzle and the vapour tupe (the pipe on top where the mantle is mounted)?

It really seems that the latern is getting execessive fule hence flaming on the outside of the mantle - that becomes black..

 

Hello, this is how it looks for me.
All lamps are optimus to he best of my knowledge.





Can I make sure it's not the needle that is badly adjusted?
The air gap seems to be maximized already but please comment on this
Thanks all for support

 

If you can feel the tip of the needle or just see it, then I am sure it will be ok.

it may be the case that the jet is worn and a previous owner has adjusted the air gap to try to compensate?

** Sorry.. I see you have replaced these parts already

 

@Turbo_100

Woah those photos shows that your mixing chamber (the component where your ceramic nozzles screws into) looks heavily degraded, I would try to find another more intact one, that is probably the most gnarly I've seen.

The mixing chamber ensures air and fuel vapors are properly mixed, but yours looked very holed with threads exposed, leading to leaks and improper burn.

 

That does look like a split on the mixing chamber - as well as part of it missing ?