Water cooling problem

[benjijames]

Hello,
I have a problem with the water cooling system of my miss geico.
It doesn't absorb and reject anymore water.
I have checked the whole circuit. I found a very little stone in the rudder that I have removed. I have blown with my mouth water in the silicon tubes and it is rejected outside the boat. But the water cooling system doesn't want to work on its own.
The motor is still running but I am afraid the motor water cooling system and the esc have been damaged due to overheating.
Can anyone explain me how the water cooling system works. Is the water absorbed by the boat by the rotations of the motor or by the fact that the boat moves forward. I have tried the boat in my bathroom and removed the prop but it doesn't reject water. Since the water cooling system is attached to the motor I am afraid I will have to change the whole motor. Have you got any suggestions to improve the water cooling system ?
Thanks a lot.

[norbique]

Water is picked up by the movement of the hull. If the boat doesn't move, water doesn't flow.
You might have more dirt somewhere in your cooling line/system, which may block waterflow. Check your system with a syringe. Try forcing water through the cooling lines.

[HYDROJERRY]

I agree with Norb,,the rudder has the water pickup in it when the boat moves forward the water catches in the picup forcing it up threw the rudder threw the lines threw the esc and then to the motor cooler jacket then out the boat,, if you run your boat and you cant see water squirting out of the side then some thing is blocked,, if you say you can blow threw the lines but not the rudder somethings up in there blocking it!!!! The motor cooler jacket is not part of the motor, you can slide it off and clean it out..

[benjijames]

I have found the solution to my problem. When I accelerate, the head of the motor unscrews itself from the body of the motor (cylinder). By doing so, it desactivates the water cooling system and sometimes pull out the silicone tubes. So i will have to attach the head of the motor to its body (cylinder). I think I will use silicon glue for high temperature. Has anyone encounter the same problem ? What would you do ? Have you got other advice ?
Here is the link to the video on youtube that illustrates the problem.

http://www.youtube.com/watch?v=eNoQ9nTDTdg

[HYDROJERRY]

HOLLY CRAP!!!!! thats screwed up,,,,ive never seen that before!!!!

[norbique]

you should fix the motor front from spinning somehow. glue?!

[Peacock8]

Ehh, shouldn´t the two screws securing the motor to the mount prevent this? Take out the two screws and put some loctite on them and screw them securely in again.

Ørjan.

[sailr]

The two screws are not moving, the can has come loose from the end bell. I don't know if the proboat motor endbell screws on or is secured by screws. If screwed on, removed the motor, put some loctite on the threads of the end bell and screw back on as tightly as you can. Personally, I'd send the motor back to proboat. That should NOT be happening.

[Darin Jordan]

I've seen this happen once before, but it's rare. This motor just didn't get enough "glue" on the endbell. I usually use a thrust washer to prevent the other endbell from being pushed off, but even that wouldn't have fixed this.

Some Loctite Sleeve Retainer would hold it back together. That's similar to what the factory uses, though likely better...

[Darin Jordan]

Ehh, shouldn´t the two screws securing the motor to the mount prevent this? Take out the two screws and put some loctite on them and screw them securely in again.

Ørjan.

If you get it apart, you'll see that the motor screws have nothing to do with holding the case to the endbell. The endbell is just glued on. Some good Loctite Sleeve Retainer, properly applied, will cure this.

[benjijames]

I have finally bought a high temperature glue that is supposed to resist to vibrations. I will tell you if it works. Thanks for your comments.