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Gold Prospecting
Do It Yourself (DIY) Projects
Spray Bars: Holes v's Slotted Comparison
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<blockquote data-quote="elbowgrease" data-source="post: 55232" data-attributes="member: 233"><p>The pump in the video isn't going great guns maybe 1/4 - 1/3 throttle.</p><p></p><p>Its a Aussie Pumps GP1/GX25 Honda 4 Stroke 1hp 1" Pump. Max Flow 120 litres per minute. </p><p></p><p>I went with that pump for a couple of reasons, firstly its light. 5.4kg dry weight, the next part is 1" pump means 1" layflat and suction hoses which again saves a lot of weight. The highbanker is 250mm tapering down to 210mm and the couple of field tests I've run the volume of water is pretty close to right without revving the guts out of the pump. </p><p></p><p>rc62burke When I'm running that pump in the backyard (as in the video) I'm just using 1" suction hose from the outlet on the pump up to the spray bars which are 1" PVC pipe.</p><p></p><p>Wal I'm familiar with the flood method of washing. I think to go that way would take some redesigning of the hopper as I'd need to shoot the water in from the (currently) open end similar to way the dredge inlets on the US style highbankers often have. I suppose I could use the existing holes and fashion some backwards pointing PVC pipe to dump the water in instead.</p><p></p><p>The last slot on the slotted spray bar I made fires a bit to close to the end. If I had my time again I'd probably have not put that one on, I might even look at filling it with glue or something. Unfortunately I don't have a drop saw so I did that this morning using a hacksaw.</p></blockquote><p></p>
[QUOTE="elbowgrease, post: 55232, member: 233"] The pump in the video isn't going great guns maybe 1/4 - 1/3 throttle. Its a Aussie Pumps GP1/GX25 Honda 4 Stroke 1hp 1" Pump. Max Flow 120 litres per minute. I went with that pump for a couple of reasons, firstly its light. 5.4kg dry weight, the next part is 1" pump means 1" layflat and suction hoses which again saves a lot of weight. The highbanker is 250mm tapering down to 210mm and the couple of field tests I've run the volume of water is pretty close to right without revving the guts out of the pump. rc62burke When I'm running that pump in the backyard (as in the video) I'm just using 1" suction hose from the outlet on the pump up to the spray bars which are 1" PVC pipe. Wal I'm familiar with the flood method of washing. I think to go that way would take some redesigning of the hopper as I'd need to shoot the water in from the (currently) open end similar to way the dredge inlets on the US style highbankers often have. I suppose I could use the existing holes and fashion some backwards pointing PVC pipe to dump the water in instead. The last slot on the slotted spray bar I made fires a bit to close to the end. If I had my time again I'd probably have not put that one on, I might even look at filling it with glue or something. Unfortunately I don't have a drop saw so I did that this morning using a hacksaw. [/QUOTE]
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Gold Prospecting
Do It Yourself (DIY) Projects
Spray Bars: Holes v's Slotted Comparison
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