Here's my freshly poured floor, I added a step to my shop back door with the overage.
This mount system is a bit of an experiment. I've based it on how old logging operations used to set
their engines in a bed of clay. My Foundation Block is sitting in about 6 inches of clay.
I planned it so that once my floor was in, my crankshaft is at a comfortable height.
Prior to the pour, I had placed 1/2 inch plywood around the block, after the concrete cured,
I removed it leaving a 1/2 gap between the floor slab and the block.
Will post an update of how well this isolates the vibrations.
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Since building this generator, I have not used my 120VAC generator. This is capable of putting 600 watts, into my batteries, which is adequate to make up quickly for large loads off my inverter. I'll admit, it's a little work in the morning to start it, but once started it can run for many hours with no maintenance short of adding water. It seems to use about a gallon of fuel every 4 hours, not bad in my opinion...a LOT better than my old Honda generator (which quit after two years) which pounded itself to death charging batteries with a battery charger. Although antique engines may not be everybody's preference, a good slow running charger like this should be an important part of any "off the grid" battery powered system. Something like this, a good battery bank, and a strong inverter can go a long ways!