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Water Pick-Up or Water Pump?

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Water Pick-Up or Water Pump?

Old 05-23-2004, 09:33 AM
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ab8dd
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Default Water Pick-Up or Water Pump?

When bench running my Shockwave with water pick-up adapted to the garden hose the engine ran very cool, however, when I ran it (for the first time) last night the engine seemed much hotter. I did some passes to see if water was ejecting through the outlet and it was really hard to see or tell. I have looked at some aftermarket pick-ups and they look as if they have much more tube in the water compared to mine. Mine is mounted through the right trim tab and does not protrude very far into the water, I will try to attach some photo's.

I would prefer to have a water pump, can anyone recommend a particular one and where to get it? I am new to R/C Boating and have little to no experience or exposure so I am going to rely on help from the folks on this site.

Thanks
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Old 05-23-2004, 11:41 AM
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pompebled
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Default RE: Water Pick-Up or Water Pump?

A motor must reach a certain temperature in order to run properly, the garden hose may have been too much.

The position of the waterpickup seems in order, the water flow is only minimaly disturbed by the round edge of the transom.
Don't make it stick out anymore, you'll only add extra drag!

If you're not satisfied with the amount of flow, put a pickup tube in the propspray, behind/over the prop, waterflow guaranteed.

Regards, Jan.
Old 05-24-2004, 06:32 AM
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TERBObob
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Default RE: Water Pick-Up or Water Pump?

Ditto on what pompebled stated . Placing a water pickup , on an angle , behind the prop will give you more water than really needed . And when he told you about the operating temp , he was right on cue .
If your worried that the temp might be too high , try the spit test . Literally split on your engine after a run when you think shes getting too hot and if the spit hits the water jug and "sizzles" right off , then yes , the motor is too hot , but if it stays there and evaporates , then as a general rule of thumb , your fine . ( mind you , this is NOT a sure fire way of testing , but in general , AND , without a temp gun , is a vague way of testing for overheating )
Old 05-24-2004, 09:38 AM
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ab8dd
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Default RE: Water Pick-Up or Water Pump?

Thanks!

I do have a temp gun... what should the temp range be?
Old 05-24-2004, 07:45 PM
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ab8dd
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Default RE: Water Pick-Up or Water Pump?

Just did some test runs and the temperature is running about 206°F.

What do you think?
Old 05-24-2004, 08:06 PM
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Default RE: Water Pick-Up or Water Pump?

Sounds good

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