How about when a lid of detergent bottle is a cup

How to ruin your clothes with a plastic object 101

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LPT: Preventative maintenance should be done on all mechanical objects periodically if the device is servicable.

If you can't understand how torque relates to rotational forces then google can probably help. The benefit from direct drive assemblies comes from their mechanical simplicity, not from heightened performance. Not sure what your point is here besides that the most common type of vacuum cleaner is a "strange design."

What does JV mean?

When you clean the vacuum cleaner, you become the vacuum cleaner.

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Why would I need more torque for a brush? I'm not bending steel beams there. I have my vacuum set at "minimum" power since it already sucks everything up. Maybe that's because there are no extra holes on the side for belt and stuff that leaks air left and right?

This is a great reminder of general maintenance on your vacuum cleaners. A few years back I bought a dyson ball vacuum (animal edition) from a guy who helps run a small colleges Eco-Hotel. Off grid, in the woods, pet friendly kinda place. He was selling an almost $450 vacuum for $60 because it turned on but didn't suck anything up anymore. Dyson vacuums don't lose suction so I knew something was wrong with the tubes that move dirt from the brush head to the canister. His advice was to part it out and sell the parts at a profit. I took it home and in 10 minutes using a bent coat hangar, I cleaned out 3 giant pet hair balls/plugs out of the tubes and the vacuum worked like new. I still have it and it still works great. clean your vacuums out!!!

Why would I want that? Am I some kind of spy whose job is to sabotage the company and turn people against each other?

It's just innocent small talk and you act like they sold out your mother to nazi collaborators. Jeez...

The ones with belts tend to do a better job cleaning because you aren't losing all of that suction power to the brushes. And you can get a lot more torque out of a belt-driven assembly in general.

true but you want your and their boss to think said person is a blabber mouth

Cheers to a sucky vacuum

Haha, I've been using, "don't shit where you eat," for ages. I like the mouse one.

You should probably replace it if the vacuum still sucks. /s

What a strange design. In my vacuum this kind of brush is just "powered" by air suction. No motors, no belts etc.

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That’s going to get messy with a front loader (more popular than top loaders in many European countries)

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https://www.consumerreports.org/video/view/appliances/laundry/5289484586001/how-to-change-a-vacuum-belt/

i use a sink. when i throw my cup in it gets warped.

The belt to drive the part on the front that spins to clean the floor and draw in the particles

Vacuum cleaner belt? Never heard of that.. Do you mean the filter?

I did the same thing to my old vacuum cleaner. Replacing the belt was WAY cheaper than a new vacuum.