Water resistant motor

I read in sci.electronics.design that Don Kelly wrote (in ) about 'Water resistant motor', on Mon, 4 Oct 2004:

I haven't seen any in UK yet, but I do have liquid honey in a plastic squeezy bottle. It's a big marketing mistake, because you don't waste any on spoons, the working top, your left boot, etc. Expect a sharp drop in sales. (;-)

OTOH, I do have pasta sauces in plastic jars. They would do.

A small air pump - like used for aquaries??

The pump is left in a dry place and the hose can be as long as you like because there will be little pressure drop with the miniscule flow.

Some people are allergic to nuts!.

Buy a radio controlled boat!

sPoNiX

On Monday 04 October 2004 02:32 am, Gordon Youd did deign to grace us with the following:

And some nuts are allergic to people!

Ha! I got it first!

Cheers! Rich

On Monday 04 October 2004 01:45 am, John Woodgate did deign to grace us with the following:

Well, I don't know if I'm a representative or example or paragon of anything other than applied whimsy/lunacy, but I am a single, white, middle-working-class male guy, and I imagine that I'm not the only customer who would pay a premium price for honey in a package that doesn't spill all over your shoes and stuff. As with mustard. And, for that matter, ketchup. Hey! I think I've serendipitized a new axiom:

Guys like condiments that we can point.

Cheers! Rich

Check out the price per unit in the squeeze bottle compared to the older bottles, also there's a skill to designing containers that seem to hold more product than they actually do- so maybe they're not just punting.

Best regards, Spehro Pefhany

Hi Robert,

I have never seen a DC pump from a garden center and since my wife is into fountains and water features I have the distinct pleasure to take all of them apart whenever one croaks. All there is besides plastic stuff is an external winding that is fully encapsulated for safety reasons and the rotating core, with often rather flimsy "bushings". After a number of algae cleanings these bushings are what determines end of life, usually.

There may be a chance to get DC at RV centers since that stuff has to run off a 12V battery circuit. But it'll probably cost more.

Regards, Joerg

I read in sci.electronics.design that Joerg wrote (in ) about 'Water resistant motor', on Mon, 4 Oct 2004:

You want the type of nylon bearing that some droid designed into central-heating pumps in UK about 25 years ago. Over time they GREW, and got tighter instead of looser, so that the pump seized up after about three years.

On Monday 04 October 2004 10:22 am, Joerg did deign to grace us with the following:

I don't understand why the guy doesn't just go to a landscaping store and pick up a pond pump. Or the pet store and get an aquarium pump. Or the marine store and get a bilge pump. Or a bubbler.

Maybe he's a troll, or, since I haven't seen any comment from him since the OP, maybe he's one of those ask-and-run guys.

Cheers! Rich

Hi John,

Aha! Thanks for the hint. Come to think of it, what I found in there were nylon bearings :-(

Regards, Joerg

Maybe a bubbler instead? Used in some place to keep dock pilings free of ice. Since it pumps air it doesn't need to be immersion proof.

Robert

They grew because nylon absorbs water. When used for bearings for prop shafts in boats it ir rough machined, soaked, and the finish machined. Acetal plastics won't absorb water and make excellent bearings for low force, water lubricated, rotating assemblies. ERS

If the pump is indoors, then in cold weather water will condense in the tube, and block it freezing the tube, and stopping the flow of air.

Yes, that sounds like a great idea, since it must use some kind of a motor powering a rotating drive fan and the whole arrangement will be water resistant... I'll investigate this one with interest!

I just wanted to say thanks to everyone for the overwhelming number of possible ideas.

Abdul