7.62marksman said:
i had some trouble with the water flow but a few changes of pipes and that was soon fixed
Maybe you can offer me some advice?
The young bloke of a mate of mine is more interested in alluvial than detecting so i'm not much use. Your situation above reads similar to what he is experiencing, but with a 2.5hp 1" o/let Honda and 'sluicing', not trommeling.
He also states it has flow of ~ 110lpm (?)...and since a recent 'tune' (plug, filters, oil etc) after being given a 5hr run pump, and a few outings says he's not getting enough flow.
Took some talking, but he also says he doesn't run it wide open (apparently goes all day, break for lunch i guess?) as he is concerned about o/heating & blowing the pump.
I suggested a coupler for larger hose initially, then advised him, after learning how he runs it, to up the revs from 50% progressively till he got the required flow with what he has.
So...
, question is....Just how strong and reliable are the Honda 2.5hp pumps (maybe as old as 10 yrs, but only done about 60-80hrs tops) running at say 85-90% for approx. 8 hrs??
Is 110lpm 'enough' for a small sluicing kit?
Should he run at say 75% and if not enough flow, use a larger line??
Is it possible to change the 'impeller' and therefore the flow rate?
Not having been there while he had the issue, made it harder for me to visualize his predicament.
He did note he was finding fines in the moss, but just felt he wasn't getting enough flow to distribute the ore's.
[Edit]:..I just recalled,..he also says he sets up his angles on a test run prior, so he has it as low as he dares (atm with current flow) before losing color out the end...
Thoughts??
With Thanks
Gypsy