I thought you may find this interesting, it is a video showing how fast flue temp can increase. This is a bit of an extreme case as the stove is loaded withe pallet wood and the door is not latched tightly, (there is a small gap). The readout on the right is flue temp, the readout on the left is stove top temp.
It actually would have been quicker as I closed the door tightly at around 800 °F, and the flue temp slowed down and started to decrease, then I cracked the door again and it took off again.
I did not check but I bet the outside of the double wall pipe was only warm.
http://www.youtube.com/watch?v=2p9jNJhSQak
It actually would have been quicker as I closed the door tightly at around 800 °F, and the flue temp slowed down and started to decrease, then I cracked the door again and it took off again.
I did not check but I bet the outside of the double wall pipe was only warm.
http://www.youtube.com/watch?v=2p9jNJhSQak