Water pump problems

[jim smith]

I got a roller water pump from R/C Sub Work Shop. No installation instructions came with it for powering it in forward and reveres. I tried a second ESC but can't get enough power to run the pump.
The boats main ESC is a 25 amp and the one for the pump is a 10 amp. The pump is rated for 6-12 volts. I'm only getting 5volts out of the 10 amp speed control. Is this the way to run the pump or is there a different control I should use?

[bob_eissler]

I think the motor should spin the pump with any escape. You can do a test with the motor connected directly to the battery to see if will spin.

[bigdave]

Normally an ESC is not used.
A ballast control switch is used. Either micro S/W or electronic.
You don't need to change speed on a pump. It should have full battery voltage all the time.
Not saying it won't work, just not usually done. BD

[southern or]

Dave's right. The air pump I have from them is wired through a 3 way control switch that also controls the solenoid actuator.

[jim smith]

Thanks guys, they didn't tell me that when I ordered the pump.

[jim smith]

One other thing, dose anyone know where I can get one with out having to go to Hong Kong?

[southern or]

A quick look at Engel's shows they have loads of them. Kevin McLeod would be a good resource too. He's on the forum.

Edit: Engel's isn't cheap, but everything I've gotten from them has worked right the first time.

[cheapsub]

how about New York City

http://www.adafruit.com/products/1150

[Guest]

I have a feeling the pump being referred to in the original post is a peristaltic water pump- although they pump air too, slowly.

You say you're only getting 5 volts out of the esc, but don't state the system voltage you're running at, or how you have the thing wired up. A few decent pictures of your set-up would be helpful.