Drop Riffle Highbanker Progress
3,106 views · Published 2 January 2012 · 0:58 · Indexed 9 October 2026
Channel: AstroBouncer · 2012 · Science & Technology
Worked on my four foot drop riffle highbanker some today. I just have to attach the legs, drill the water holes for the spray bars, seal it and waterproof (again), and add the height adjuster for the grizzly. Some features: Vortex matting under the grizzly as an 'inspection mat' you can check while running. 50 Drop riffles, including 25 double drops that have a smaller groove inside the main drop riffle for retaining fine gold. 2 stage system using 3/16 punch plate for 12 inches at the beginning of the sluice to allow the fine gold to settle out. I might add another stage of 12 inches of punch plate with 4 mesh if I am getting any fines in the riffles past the initial 13 inches.
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