Internal Water Cooling system Pump for large Catamaran

[mxrb18]

Does anyone have any suggestions for a water cooling pump that would be sufficient in feeding both a TP-5680 and ZTW Seal 300A ESC? I am planning to run a dual water inlet that will feed both components separately for either side of the boat but I have been considering running a pump to really increase the cooling potential and prevent any cooling issues. If anyone has any brands or models that they recommend I would really appreciate any input. Thank you.

[guchino]

How about this one.
I use not only Gas but also FE boat.
[URL="https://www.aliexpress.com/item/32730123173.html"]

[MarkF]

The cooling I get off my rudders has been working very good for me for over 25 years. The only guys I have seen running a pump are saw boats that pull over 500 amps.

[Alfa Spirit]

Use a pump only if the boat is too light .

[RaceMechaniX]

A pump is a good idea even for play boats that start and stop often. If room allows a single or pair of pumps will greatly increase the life of components especially if you are pushing power levels.
Remember as soon as your boat slows so does the water supply. Latent heat in the motor windings and ESC will creep up quite high after hard running.
I have been putting small pumps in almost all my boats except ones that don't need it. I use rather expensive, but compact pumps from www.micropumps.co.uk , but there many options.
I use a 3.3V or 5V DC voltage regulator from Pololu so I can run off the receiver power.

[T.S.Davis]

Tyler, it looks like they sell on that's 6volt.

[RaceMechaniX]

yes, but the 3V motor has a higher flow rate. https://micropumps.co.uk/TCSM200range.htm

[guchino]

Fe boat 1300mm Mono 5860 970kv Ztw300a 12S
Gas boat S520X2 1700mm Mono.
Both good cooling.

https://www.aliexpress.com/item/32730123173.html

DSCF0571.jpg

[mobius]

Tyler, do you put it/them inline after the rudder/water pickup? The 3.2mm ID tubing seems small for a big boat.

[guchino]

Tyler, do you put it/them inline after the rudder/water pickup? The 3.2mm ID tubing seems small for a big boat.

GAS from the bottom of the rear
FE from the rudder pick up.
Use large silicon tube (3.2mm?)　The nipple has a slightly wider aperture
The water pump is used at 10 to 12 volts.
At high pressure there is enough water flow no problem with cooling.

This pump also good.

https://www.mhz-powerboats.com/shop/en/motors/e-motors/supplies/143/cooling-water-pump-electro-water-pump?number=1586

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[mxrb18]

Thanks everyone for the responses. I think I am going to run two of the MHZ pumps that guchino recommended. One per motor/esc combo with the pump coming from the bottom hull pickups to a "Y" which feeds each component simultaneously rather that running from the motor into the esc and then out of the boat. This I think will give me the best cooling performance running 12S. We'll see how it goes

[Jesse J]

Only risk with using a Y instead of each component in line is that if one has more resistance, it will get less cooling.

[Fluid]

Jesse is correct, using a “Y” is a poor method for maximum cooling of multiple components. Too, the OP will want to route the cooling water through the ESC first, then to the motor.


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[Alfa Spirit]

A rudder with 2 water inlets is a good choice, parts available in all brands ,