KentucK:
Coffee's hot - com'on up... Pump is a 1/25th horse Grundfos 2P310, moves 18.5 GPM at 1' head pressure, down to 1.4 GPM at 15' head pressure. We've been keeping the house warm with no problem - the weather has been mostly low 30's at night and anywhere from mid 40's to 58 or 59 yesterday. I've been burning mostly small junk wood so far - I'm waiting for a friend's small dump truck to get the diesel engine fuel pump fixed before I do serious cutting. The foam insulation seems to be vastly superior to wrapping the tank in fiberglass bats, as most of the previous ones my son-in-law built were completed with (by the owners - not him). We let the fire die out one day and the water temperature had only dropped about 12-15 degrees in 24 hours (the circulation pump was off, so we weren't drawing heat to the house). The thermostat in the house isn't calling for heat more than 1-2 times an hour at night when it's cold now. I eliminated the heat anticipator setting on the thermostat, as there shouldn't be a heat overrun, like there is with a gas or oil furnace (when it's up to temp, the air handler just shuts off, pronto). I'm already regretting not putting the second loop in for the workshop (about 500 sq feet, insulated) this winter, as I'll probably spend close to $400.00 on propane this year and the new furnace sets right in back of it (DOH!)
BTW - your post driver brings up my problem a few years ago.. I was using a home made tamper, made from a 4 foot piece of 4 inch pipe that had a piece of 6 inch C channel welded to the end for the tamper foot. Has a pair of D handles welded on close to the open end to grab on to.. Turn this sucker upside down and it looks almost like a post driver, with almost being the operative word here.. I was driving standard 8 foot steel fence posts 16 foot apart for stacking firewood and got 3 posts driven - had started the 4th, when the foot came loose from the end of the pipe and fell about three feet - I managed to slow its progress towards earth with my head, fortunately padded with a knit wool "dummy" hat and a baseball cap..
I weighed the foot later at 7 pounds - I had just tacked the thing on the end of the pipe, cause it was just a tamper..... Now, the doctors said that it was just a coincidence that I had vertigo the next day and that the resultant inner ear damage( that I still cope with) was caused by a virus.. I was off work for a month and the better half made me go buy a post driver at F&F.....