Just revamped ram pump at the farm. The expansion vessel had rusted so I took the opportunity to raise the pump on some blocks to make it easier to maintain, and to dig a channel for "waste" water to run off instead of pooling under the pump. Vertical fall into the pump is 12ft and vertical distance the water is pumped up is about 100ft. Flow at the top is slow but that's because the waste valve is moving too fast, I had added weights to it but they fell off #permaculture #offgrid #hydraulicram

I would love #Archaeology #hHstorians #WaterManagement fans to download my items in https://www.cawdigs.co.uk/publications and explain why the leat follows such an odd course. #HydraulicRam My finding this #Lostplaces was out of this world!

Electric Wheelchair Dump Truck Hack Really Hauls

Have you ever looked at a derelict electric wheelchair and thought "I bet I could make something great with that!" Of course you have- this is Hackaday, after all! And so did [Made in Poland], who managed to get a hold of a broken down electric wheelchair and put the full utility of his well equipped metalworking shop to work. The results? Lets just say it hauls.

What we really enjoyed about the build was that there wasn't much that couldn't be done by an average garage hacker with a drill press, angle grinder, and a stick welder. While it's definitely nicer to have a lathe and a high quality welding table, plasma cutter, and everything in between, nothing that [Made in Poland] did in the video is such high precision that it would require those extensive tools. There may be some parts that would be a lot more difficult , or lower precision, but still functional.

Another aspect of the build is of course the control circuitry and user interface. Keeping the skid steer and castor approach meant that each motor would need to be controllable independently. To achieve this, [Made in Poland] put together a purely electromechanical drive controlled with momentary rocker switches and automotive relays to form a simple H-Bridge for each motor.

Of course you just have to watch until the end, because it really proves that a man will do anything to get out of hauling wood around! Old electric wheelchairs can also make a great base for big robots, as it turns out.

#hardware #24v #electricwheelchair #electromechanical #hbridge #hydraulicpump #hydraulicram #mechanical #relay #relays