OK, as for the garden size it is about 125" long and 75' wide. I sorta figured one run of sprinklers down the middle working in a full circle would pretty well cover everything needing water the most, and those three heads in-line should overlap down the length of the garden. My initial thoughts were to use 1.25" black poly pipe for the mainline and insert tees and reducers for my uprights to mount the sprinkler heads on.
I didn't plan on trying equal a downpour (2+ inches) at a time! I figured I could run a tank of gas through the pump...about a gallon, which supposedly gives about 3 hour run time. That ought to be enough to give everything a good drink and if not, then I can run another tank through it.
I'm looking at the Harbor Freight 6 horse pump with 2" intake and exhaust ports and I think it is advertised at 35-40 psi and 150 GPM...using the 2" line......which I figure should deliver plenty of flow for the 3 heads even though the delivery line is reduced in diameter. As for the pump being too big, if that's the case, I'd think adjusting the throttle to a happy spot would regulate the output easy enough. These are just my thoughts on providing a simple solution. Maybe my logic is entirely wrong.
I have looked at the pumps sold at HF, Lowe's and TSC and other than the paint...they appear identical...they're all made in China and have Honda clone engines on them.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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