I've been looking at chickenwire/shotcrete art form structures as an alternative low cost 'building' method (poured in place slab in an 'igloo' basically) and swimming pools/pond liners. The sprayers typically function similar to a bernouilli venturi pump using 'dry' cement. Has any body out in...
I've been researching this lately (.01$ per mile fuel cost, 2500$ diy cost).
The off the shelf kits are around $2500 plus batteries. They typically are 10 to 15 hp 48v electric motors. Golf cart motors are typically 3 hp 36v to 48v.
I've been wondering if it'd be possible to speed control about...
fyi- lots of em out there- I like this one because it breaks out heat losses
http://www.littlegreenhouse.com/heat-calc.shtml
most recent stuf I've read they use radiant floor tubing in raised beds to lower costs. A lot like the water troughs in the inca mountains (heat the soil to keep the...
