Converting Low GPH sluice to GoldHog Mats
As you can tell from the video.... the customer is not happy with his current setup. So we thought we'd post the fixes and recommendations here. It's kind of tough one to "fix" because of the notes below, but we'll do our best.
The system shown is fairly low gph so we have to use mats that are made for this. We can't use aggressive matting as the water is not DEEP enough and there isn't enough SPEED.
The water coming off the header box drops DOWN... into the sluice. Unlike ours which SHOOTS in and clears out the top. This can cause PILE UPS under the header box.
The sluice is fairly short... so we're limited as far as varying matting surfaces.
All that being said........ I've watched the video over and over and over. My GUT is telling me to run alternating Motherlode and DownDraft all the way down. Then play with the pitches (extreme variances) and see what happens.
I think what Doc meant to say is that each factory delivered width of mat is long enough, about 3 feet, for three ten inch wide strips (crosswise to the water flow). The mats are nominally six inches high (measured with the flow of water) and two full length mats (as shipped) will generate six segments for your box and that should cover about three feet (again, with the water flow) of sluice box bottom.
Years of Personal Mistakes Unhampered by Common Sense.
OK, I ordered the mats. Now the issue is that since they made the sluice with a taper, once I cut the mats to fit, they can not be put in a different order. (did I mention I have vast buyer's remorse?) So, if you were in my shoes, would you put the Motherlode or Downdraft first? Or don't you think it really matters?