Freddy wrote:I tried the 9 ball trick.... the dog took the balls & burried them out back!
Rats! I knew that was too easy! After re-reading the whole thread, I can't come up with an idea better than what you are doing, Freddy. I agree you just have to get the electronics right. But here's one more idea anyway:
The problem on a hand-fed stove is more at the replenishing of a fire. That is, when you load new coal onto the burning bed, the heat drives off a lot of gases from the new coal that may not ignite right away. Eventually the gases can build up and cause the boom. One way to avoid that is by giving it LOTS of air through the regular inlet, which leans out the mixture so it doesn't ignite. Eventually the mixture gets rich enough that the gases DO ignite, but there's enough air going through that it tends to be a gradual ignition rather than a boom. Is there any way to do that with your stoker? The equivalent might be, to taper off the combustion air gradually rather than just cut it off all at once.