Temperature Questions

[obrien]

Tonight when I was running the boat I noticed some differences in my temps than what I have seen before. My battereis were staying in the 105-117 range, but I say my motor temp up over 150 and the esc over 170, while running the same prop (642) that I have been running. I did notice my first time out that the motor didn't seem to want to spool up, but the more I ran it the better it was. By my last pass the boat ran 48.9. I have been trying some different drive angles. Before my last pass I did notice that the retaining ring on the top of the drive was gone, so the prop was a bit deeper in the water than normal. So I taped it up enough to get back to the normal posistion.

If my motor has had some water get in it, what should I do to protect it after the runs.

I am not sure how much water has been through it, but I am sure some has due to the number of times the boat has been upside down.

The 48.9 run is the fastest pass with the turnfins installed. I cut them down a bit and sharpened them some.

[ReddyWatts]

Do you lube the drive line after each day of running and check it for binding before each run??

which motor are you using?

[Fluid]

We really don't have enough information - what boat, what motor, what prop, what cells? If the motor has been flooded, then the bearings are probably shot - rusted. That would explain the high motor and ESC temperatures.

If the motor has been over 150F then the magnets are probably damaged. That causes poor efficiency and results in a rise in motor and ESC temperatures. I toasted several ESCs with a motor with bad magnets before I understood what was happening. If it is a Chinese motor then it is best to just toss it and buy a new one.



.

[obrien]

Yes I grease the driveline after everyrun. I finally figured out yesterday, how the water was coming in. If I trim the drive out, water will go up the shaft. If it is tucked in, the boat stays dry.

Fluid, the boat is a Black Jack 26 with a hydra 120 and an ammo 36-50-2300. I am running trinnity 6cell 4200 battery packs that I changed to a side by side setup.

I don't think the motor has been submerged, but it has def. has water on it. I am thinking that the bearings are pretty pissed, thats why on my first run yesterday the boat was very slow, and then as I ran it, it picked up speed and was running normal.

I put a bit of wd40 on the bearings last night on the motor to see if that makes a difference when I run it again.

[mike a.]

IMO i would not use wd40 since its a wax

[obrien]

it was the only lubricant I had that I could use. what would you guys use instead?

thanks for the info as well. I appreciate the help