I got brave or foolish. I have complained for some time about the noise from my stove's blower. I also replaced the blower motor after only 3 years. The stove has a double layer top with an air space between the two layers. Duct work on the back carries the air from the blower up the back of the stove to the top, accross the top and blows out the front. That all works just fine with the blower running, but with the blower off the exhaust gas temp rises because the heat is held inside the stove by the double layer top and the ductwork on the back.
With sheet metal nibbler and cutting torch in hand I turned my 30-95 into a radiant heater (I hope). I cut most of the sheet metal duct work off the back with the nibbler. I cut 5, 2" diameter holes in the top in front of the hopper opening. This should greatly improve the escape of heat being produced without the fan.
Next, with the cost of heating oil, I want to get away from running a furnace in the fall and spring when the weather is so variable. I find the coal produces much more heat than I can use at mild temps. So, I want to burn wood in my Hitzer in the evenings during these seasonal transitions.
I am thinking that I will build a heat baffel to be suspended from the same lip that the hopper hangs from. The baffel will be under the flue outlet and not go all the way to the sides of the stove. That should route the heat arround the baffel and keep the flames from going directly up the flue (which they do without any baffel in place). That part should be easy.
Next I need to let in combustion air over the the wood fire. Unless someone has a better idea, what I plan to do is cut a hole in the side of the stove just above the fire bricks and install a spinner vent. Open with wood and closed with coal of course. I will install both baro. and manual dampers, and cap the baro. durring wood burning.
Where can I buy a spinner draft control? Are they different size for wood or coal stoves? Is one spinner enough to maintain a low to medium wood fire in the Hitzer?
Your suggestions and comments would be appreciated. I am not thin skinned so you may be blunt if need be.