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  • DavidN71's instructable Water Your Lawn in a Hurry's weekly stats: 3 months ago
    • Water Your Lawn in a Hurry
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      3 comments
  • DavidN71 commented on DavidN71's instructable Water Your Lawn in a Hurry3 months ago
    Water Your Lawn in a Hurry

    The white PVC connectors in between the tee and the 2 gate valves are there to make disassembly easier. The pump head was reused when the original pump burned out years ago and was replaced by the one pictured now.

    The pump is a standard 1 1/2 HP [120v/240v] irrigation pump from Home Depot.The pump head output is 1 1/2", which is the same as the fire hose.I unscrewed the 1 1/2" output pipe and replaced it with a 1 1/2" tee. The NPT to NST adapter screws into the tee and the hose into that.The nozzle screws on the fire hose just like a garden hose nozzle does.No tools needed except a pipe wrench. The picture of the pump shows the connection there.

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  • Lithium Upgrade to 18v Black and Decker Single Source Battery Pack

    Thanks. I avoid cordless tools except where I don't have an easy choice. It seems batteries are expensive and don't last very long. My parents used to live on a boat, so there were many times safety came first even though they had more onboard 120v power away from the dock than most houses. I put a vacuum cleaner cord on a Makita drill once and ran it from my car battery. The on-board battery could not be swapped out. When it ran dead I had to wait for a recharge.

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  • Lithium upgrade to 18v Black and Decker Single Source battery pack

    The cheap cells I bought don't do well on a weed wacker, but they aren't soldered in, so they can be swapped out for better if I wanted. I still have a couple of cheap nicad packs and between all 5 I can do what needs to be done. The cheap cells were like $1 each so I didn't expect miracles. I have bought completed packs from HobbyKing and they are careful to grade their packs/cells and charge accordingly. I built 2 packs from 3.2v lithium iron phosphate cells for a cordless drill at work and those work well. Very fast recharge times.But even those had issues with the spring loaded battery holders softening from heat when improperly recharged. The lithium iron phosphate cells got hot enough to melt off the plastic label when overcharged. I was using the wrong charger. They also quit wor...see more »The cheap cells I bought don't do well on a weed wacker, but they aren't soldered in, so they can be swapped out for better if I wanted. I still have a couple of cheap nicad packs and between all 5 I can do what needs to be done. The cheap cells were like $1 each so I didn't expect miracles. I have bought completed packs from HobbyKing and they are careful to grade their packs/cells and charge accordingly. I built 2 packs from 3.2v lithium iron phosphate cells for a cordless drill at work and those work well. Very fast recharge times.But even those had issues with the spring loaded battery holders softening from heat when improperly recharged. The lithium iron phosphate cells got hot enough to melt off the plastic label when overcharged. I was using the wrong charger. They also quit working, but at least didn't catch fire.

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  • Lithium upgrade to 18v Black and Decker Single Source battery pack

    For high current draw you need cells rated with 25C. A weed wacker is pretty much a dead short when trimming grass. That's one of the reasons the original nicads don't last long. A cordless drill doesn't pull anywhere near the current and therefore is much gentler on the battery pack.http://www.tested.com/tech/502351-rc-battery-guide-basics-lithium-polymer-batteries/

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