Thanks for the info Ed T and the great customer service on my small Kifaru stove.

I use an 84-inch pipe on my small stove for the 4-man and a 5-footer for the Paratipi. The stovepipe is 3-inches but it tends to change shape some during the burn. I don't know if that affects the draw or calculations. I tested the Kni-co with the 5-footer so maybe some burns with the 7-foot pipe are needed. I am going to clamp a piece to the bottom first to see if it helps. If it does than I can adjust the size before riveting.

razorsharp1

I have seen stoves like that before. Never got one due to the small cooking area but sounds like a nice stove just the same.