![]() I am just used to hit the nail with the first blow, but not here.īeer and Mr Google came to the rescue, and the above picture is my first working infinity jet. I build half a dozen prototypes and none worked, to my frustration. I settled for an infinity, just could not get a workable venturi going. My first task was to build a functional venturi or infinity jet. ![]() This 1 km stretch of river has been heavily prospected. The gold source is about 300 meters upstream from the hills. ![]() Most gold is in rather shallow water, deep inside the thousands of crevices. The stainless steel nozzle supplied with the AP dredge was too bulky for my intended area. Li-polymer 20 AH 29.6V batteries in waterproof 3m deep and hard proof box. ![]() Next I resolved to use the pump and battery and build my own from PVC pipes.ĭC 36Volts/16A, 300 L/min heavy-duty pump (4700 gal/min) with fuse protection Not claiming I can build a better one, I tried to make modifications first, still no good. While it does suck, it jams up the box with gravel and just won't work. I bought this AP underwater gold dregde from Down Under and tested in the local (Taiwan) river with dismal result. ![]()
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