Ya 12 hours burn times are very subjective. 8 hours is more realistic and 10 hours is achievable once you perfect burning with your stove. If you are seeing more flames above when turned down , thats a good thing you're burning clean.
I have a Rutland and it reads 100 degrees cooler than my IR gun at the same location. Is there a real quality accurate magnetic available?What thermometer are you using? I had a rutland, but the spring kept coming off. I returned it
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And that's what I was wondering. I am still trying to figure this out for a slow burn. I could have turned the air down more. It seems when the air is fully closed the flames dance but it really does not last long. I don't see the flames coming from the secondary tubes for a long period. I might see a lot of flames coming out , with air closed, for 10 minutes. After this the flames will dance in the stove. i do see blue flames but I guess I am expecting more flames out of the secondary tubes. Does it not last long with a lot of flames coming from the secondary ? Today the flame in the video lasted for 3 hours. I would say I got a burn from 11 am to 5 pm. I could have went a few more hours before reloading. I typically run my first fire hot to get a good coal bed. The second fire i will run hot for 15 to 20 minutes. Then I will start turning down the air. I guess it's s balancing act. I enjoy everyone's input and advice.Pertzbros first video is true secondaries.
OPs MJRotor video looks to be in a stage where the wood has already offgassed mostly. The primary air would need turned down more to see if any more offgassing could be occurring.