Originally Posted by Anubus
Iíd like to get our Volcano running off of the AS port as well. Thanks for posting your experiences. Saved me from trying the exact same thing. Letís hope Volcano comes up with a fix.
There is still one option left. The yellow flame indicates not enough air. There is an air intake on the bottom of the burner just past where the orifice attaches. If I were really ambitious I'd enlarge it, with a sliding metal cover made out of a piece of metal can to adjust the total air intake. I don't want to sacrifice a burner for this, and the shape of the flame makes me think it still wouldn't work.
Other than that option, I think you would have to change the burner. I searched low pressure propane burners, and one issue is the long necks put on most of them make it difficult to insert them into the Volcano. The entry to the burner at the end of the neck is very wide to bring in the needed air, and that would require the entry holes to the Volcano to be enlarged significantly. Here's an example below.
I've seen shorter neck versions of the burner which solves one problem while creating another. With a short neck you can lay the burner into the Volcano nicely, but you will then need some sort of heat resistant tubing to the get through the Volcano to the exterior. Additionally, the adjustable air intake would be on the inside of the Volcano.