radioman
NES Member
Another issue we had with the cool weather smelting is when the level in the propane bottle got low the flame reduced. Shaking the bottle would make the flame start roaring again. I don't know if we would experience this in warm weather or not.
You need to go to a bigger tank. A 100lb tank would not do this with your load. This is a common problem. People think their tank is empty but it's just frozen (so to speak). The propane in liquid form can't convert to vapor fast enough in cold weather for the load. You can also get a manifold and switch back and fourth between two 20lb tanks. Or switch the hose back and fourth. Or run a T hose so you can run 2--20lb tanks at the same time.