So, just had my first official outing with the LavaBox after playing with it at home. At this point, I’m just ehh about it. The flame seems to be on the sooty side for propane. Perhaps the burner is too far down in the box for the right fuel ratio. Not sure.
While it will burn over 90 minutes on a 1 lb bottle. It does start struggling after 30-40 minutes in timid weather or after about 10 minutes in real cold weather. I cranked it up all the way in 25F weather this AM and the flame shown in the photo is all it would do after about 10 minutes. Shaking the bottle definitely made the flame bigger, until you stop shaking. Maybe I need to try it without the shutoff valve in line. I’m thinking a 5 lb bottle may work better in the cold temps.
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I also noticed that the burner is only supported at the inlet. While the rocks are very light, I’m still concerned it might bend over time (it’s already at a slight angle).
I plan to play with it more as it’s very compact. Still, not what I was expecting in terms of ready to go out of the box - especially for the price.