Too much cooling

[NitroVal]

Is it possible to over cool the electrics? Are there any down sides to adding more water pickup besides drag and more tubes?

[ED66677]

Over cooling is not an issue, the cooler is the better!
What could be an issue is too much or not enough water flow that would cause a poor thermal exchange, the goal is to find the right balance because there is a limit given by the size of the heat exchange surface, the power to dissipate and the water temperature, no matter what the flow is! The bigger the surface is, the more heat it will be able to dissipate, that's how computer watercooling works, there are plenty of scientific explanation on the web about it.

[kevinlew211]

When you push you setup to max then cooling is never enough

[Simon.O.]

An interesting concept here is this.
If your boat needs massive cooling systems then the setup is wrong. Simple.
Most boats will be fine with one pickup that runs to the speedie and the motor then out. If you need more cooling then you are over stressing the system.

Solutions.
1. Reduce load: down prop, run drier, run lighter.
2. Reduce runtime
3. Up volts and drop amps.

I am sure there are other ways too.

There are some very fast boats that have no water cooling at all.

[crabstick]

do you mean like cooling the motor past its optimum operating temp? interesting theory..

[Fluid]

In the days of 05 brushed motors it certainly was possible to over-cool the motor. A motor designer for the largest producer of racing motors told me that if the magnets were too cool when a high amp draw was placed on the motor, the magnets could lose strength permanently. Today we can't directly cool the magnets, although they remain the weak link in the motor. Unless you run your boat on liquid nitrogen I doubt that over-cooling will ever be an issue today.



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