Pump mounting, need help

ncclaymaker

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Location
Champlain, NY on the Canadian border.
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Minelab 1000, A Motorized Power Glider Trike, 17 foot travel trailer behind my Jeep. 4" suction dredge/high banker.
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Prospecting
Here's the deal. Already have a great pump and propulsion system, but... some of us in life really need a plan "B". Since looking at the prices of "branded" equipment, ouch. What would the difference be, if I mounted a pump UNDER a 12 hp riding lawn mower engine. In other words, the vertical pulley shaft attached to a pump drive shaft.

I can buy used riding mowers for about a $100 or so. Why would anyone spend big bucks for a horizontal shafted motor, when vertical shafted ones are more common. I had a riding mower for 14 years before it rusted out, the motor was still running strong. Durability isn't an issue.

The most important question is - does anyone know if this mounting style would cause an early pump failure? I'd like to get some thoughts on this mounting style before I try it as a plan "B".
 

if you can get the pump low enough under the water, to prevent any cavitation, it should work fine.
 

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