we can just try it and see, but with a new motor, maybe the voltage will be lower than with an old one, we want to be sure of not stalling......we can get new motors, but don't have access to older ones.
Tony Stewart: Thanks, that is very interesting the video. The whale gulper is , at least I think, supplied by a mains transformer, which as we know can handle big overloads no problem. I am wondering what would be the difference in current for when just pure water is being pumped.
I can see an SMPS potentially tripping out on overload unless it was designed for the maximum load (16 sheets of toilet roll)....but goodness knows what the current draw has to be to allow 16 sheet "mulch" of toilet tissue to be pumped.