cooling question ?

[lrm50]

what should the inlet water tube go to first? ESC or motor or does it matter and what is max length of the inlet water tube ?

[Blackjack-sven]

If you have only one inlet I would personally put it to the esc first as the battery power goes through that first before it gets to the motor, therefore heating up first. Thats my 2 cents.

[Fluid]

The real reason to go to the ESC first is because the water is coolest then, so it will cool the ESC better. The ESC is th emost critical as far as temperature goes. The water off the motor can be pretty warm - the metal outlet on some of my boats is noticeably warm after a hard run - the outlet is immediately downstream from the motor jacket



..

[lrm50]

The set up in my boat is motor is about center of boat and esc is behind motor. Inlet goes to esc first but tub is about 12" long. Whould this cause a cooling problem?

[mikesf]

Not really, just keep the boat moving constantly so your tubing is always filled with water. Inspect the tube's route not to fold anywhere, long tubing is prone to folding...

[lrm50]

OK Thanks for all your help

[TRUCKPULL]

Don't worry about length.
On the Hydra 240 there is about 16" of tubbing for the ESC alone
4" from Strut to trassom
4" from transom to ESC
4" from ESC to motor
5" from motor to outlet.
With about 4 or 5" to go around the motor.
Total is about 36"

And it works just fine.

Larry

[Blackjack-sven]

I'm putting together the Delta Force Vortex and have decided to run a "Y" split in the cooling line so that cold water runs to both the motor and esc at the same time and upon exit have put another "Y" connection in so that they both exit out of one place. Maybe you could do that.

[Brushless55]

That might be a good try..
let us know how well that y setup works.

[tharmer]

I use an Eagle Tree data recorder to get the temps of the motor and ESC. Whichever is warmer gets the cooling water first.
-t

[Brushless55]

what warms up first?

[Blackjack-sven]

what warms up first?

Because of how electricity flows the batteries get warm first then the esc and then the motor and drive system.

[tharmer]

But they don't end up at the same temp. For me, the batts are coolest, then the motor, then the ESC.
-t

[Blackjack-sven]

well the theory is just for what component gets warm FIRST. In your case the components don't heat up the way you want them to because if you prop up, the esc will blow before the motor, and in essence you want the motor to be the hottest then the esc and then the batteries so you can prop up until the motor temp is where you want it. But either way I would run the lines from the hottest component to the coolest. So run your lines first to the esc and then the motor.

[Brushless55]

Because of how electricity flows the batteries get warm first then the esc and then the motor and drive system.

NOt at all what I ment

and I was asking the question to tharmer who has a sensor at the motor and the esc