Yup. This is EXACTLY the behavior I was talking aboot. Be very careful when using it with the flame adjusted like this; it'll be very "poppy" when the tip gets anywhere near the work, and it's running way too lean right at the corona, so very easy to burn the radial mixing fins in the core of the tip. But at least you got it to stay lit!
It seemed a bit finicky to get going for sure and I vaguely remember the mate's one needed a certain mode of attack to get it to perform so I'll catch up with him for a refresher.
I was afraid your BBQ reg would eff with your head at those pressures/flow; surprised it didn't completely lock up on you every time you opened the valves, honestly.
It
nearly went for flying lessons for sure but the tightwad in me placed it back in the
never throw away pile.
Although at the time Saskia's remedy of 50g of cee four did go through my mind.
One other thing to consider; if you're planning to do any gas welding with this, DON'T.
Very aware LPG Oxy is unsuitable for fusion welding.
A PROPERLY set up Oxy-Propane rig can cut heavier metal than a similar Oxy-acetylene rig; the only limitation is the required flow. This is a mater of the mechanics of your regulator AND your LP tank, if you have the correct handle.
The handle and tip are all good and specified for LPG so only the regulator remains as the unknown as to how it will perform with LPG but initial tests shown it to be OK but as you say the proof of the pudding is in the eating.
The test tank was a little 4kg one that's well down on fill but the 9kg one will come out for any extended cutting so to have lesser chance of icing.
This tip is only spec'ed for 1 1/4" but that's enough for the majority of work I'll need it for.
I've done my fair share of cutting to know a good bit more than the basics although the tightwad in me mostly operates with the minimum of Oxy pressure I can get away with and as this Harris torch has just the 2 controls the Oxy regulator will get more adjustments than I usually do to keep gas waste down.
It's not like this is my first cutting torch but certainly my first LPG one and first dedicated cutting only torch.
After using one of these extended torches and being able to keep further away from the
heavy hot bits they give more confidence while cutting instead of the somewhat shorter cutting heads you connect to a standard Oxy torch.
Anyways, after a catchup and refresher with the buddy just down the road I'll try it in anger on a proper job and report back.
Edit
Oh mnem, the last chart in this pdf with the 1 1/4" tip is the 2 piece LPG tip I have:
https://www.americantorchtip.com/hubfs/Oxy%20Fuel%20Cut%20Chart%20-%20Harris-2.pdf