A Vermont Castings Resolute Acclaim, with about 1 cu. ft. firebox, and a 6" flue. I had to do a major cleanout of the chimney liner and flue pipes last month:http://handymanwire.com/ubbthreads/ubbth..._Cap#Post701801
I attributed that to not burning hot enough due to our mild winter, and subsequently left the air control on high. Well, late last week we began to notice smoke escaping from around the gaskets and pipe connections.
I let it burn out, and went up on the roof with brush and rods, expecting to find a gooey creosote clog like before. Surprisingly, the brush went all the way down to within 3' of the "T". I went inside, took the cleanout cap off, and snaked upward with a length of BX. I broke up a big clog of solid creosote not more than 4' from the stove!
I couldn't understand why that should happen until I did a close inspection of the stove and found a 1/4" gap at the bottom of the pipe going into the stove flue collar! I suspect this was allowing room air to be sucked in, bypassing the stove, and cooling the flue gasses. I jammed the pipe into the flue collar, placed a few screws, and taped the joint with aluminum tape. We'll see how that works.
Question: Does anyone have a rule-of-thumb about size of logs in a stove. A 6" log has the same amount of wood whether whole or quartered, but the split pieces have more than 2X the surface area, and will burn faster (and hotter). I think a mistake I've been making is trying to burn logs that are too large for the stove. What say you all?