Water resistant motor

google for fish tank 12v water pump found this:

Yes. Torque, RPM, budget?

Try aquarium supply companies.

Any garden centre will do this.

d Pearce Consulting

Hi Ian,

The motor needs to be something very basic, small and 'toy-like' actually. It just needs to run off 4 x AA batteries or a 9 volt PP3. I just want it to keep the water surface stirring enough to stop the pond from freezing over completely, and endangering the fish.

The motors of this type sold in Maplin (UK) are not water-proof, and when the stirring platform takes a dive into the water during a rain storm, the motor just ceases up and rusts. Budget... a couple of pounds!

Thanks Abdul

Hi,

Why does it have to be a DC motor? The pump motors you can get at garden centers would be AC.

Regards, Joerg

Looking at your site, how about a marine sump pump? Might fit the bill, is cheap, avalible all over the place, and could be hidden below the surface of the water.

Perhaps some of them might be DC, but AC vs DC is a good question; it is the size and functionality that seems to be paramount..

There are a few motors actually designed this way...

On Sunday 03 October 2004 02:10 am, AA Institute did deign to grace us with the following:

You're welcome. :-) Rich

What about an aquarium powerhead?

DC motor with magnet on shaft sealed inside a plastic container, outside of the container have another magnet fixed to an impellor.

Motor turns....... impellor follows.

Just an idea!.

Gordon.

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I read in sci.electronics.design that AA Institute wrote (in ) about 'Water resistant motor', on Sun, 3 Oct 2004:

You can get a plastic box rated IP66 or better from Farnell for a pound or three. Put your motor in it and make your float such that the motor is 150 mm above the water. The motor spindle can be 150 mm long with little problem, especially if you fit a simple guide, not a precision bearing, at the watery end.

| >>

| >> >The motors of this type sold in Maplin (UK) are not water-proof, and | >> >when the stirring platform takes a dive into the water during a rain | >> >storm, the motor just ceases up and rusts. Budget... a couple of pounds! | >>

| >> You can get a plastic box rated IP66 or better from Farnell for a pound | >> or three. Put your motor in it and make your float such that the motor | >> is 150 mm above the water. The motor spindle can be 150 mm long with | >> little problem, especially if you fit a simple guide, not a precision | >> bearing, at the watery end. | >

| >Or peanut butter jars. IP67 and cheaper ;) | >

| The lids go rusty. | -- | Regards, John Woodgate, OOO - Own Opinions Only. | The good news is that nothing is compulsory. | The bad news is that everything is prohibited. |

Buy ones with plastic lids...... silly!

DNA

I read in sci.electronics.design that Frank Bemelman wrote (in ) about 'Water resistant motor', on Sun, 3 Oct 2004:

The lids go rusty.

Jesus f****ng wept.

Thats why they put the peanut butter inside the jar!

DNA

"John Woodgate" schreef in bericht news: snipped-for-privacy@jmwa.demon.co.uk...

Or peanut butter jars. IP67 and cheaper ;)

I read in sci.electronics.design that Genome wrote (in ) about 'Water resistant motor', on Sun, 3 Oct 2004:

Actually, glass is a better enclosure material than peanut butter. Greater useful temperature range.

"John Woodgate" schreef in bericht news: snipped-for-privacy@jmwa.demon.co.uk...

pounds!

You should cover the lids with peanut butter. The AA institute has a rather limited budget, so we need to be a bit creative.