Tim,
As the years increase some human attributes show a tendency to decrease, so don't be alarmed.
If I jog your memory I'm sure you'll quickly recall that there was a 'multi-barrel firecracker cannon contest' held here in the not too distant past, and that Cannonmn constructed a rotating wheel contraption that was definitely inspired by the Russian poly-coehorn wheel of doom. Talking about faulty memories, for the life of me I cannot recall a lot of the details of his model, but I do remember that as the wheel rotated the fuses in the passing barrels (can't recall what he used for barrels) were lit by a propane torch that was set on the ground. I think the wheel he used was one of those all iron/steel carriage wheels, and the power source was provided by Ed turning some kind of belt and pulley affair.