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What to do with a Vacuum cleaner ? Answered

What can i do with a working vacuum cleaner that i do not use any more ?

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kithso
kithso

12 years ago

Bench grinder =)

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killerjackalope
killerjackalope

12 years ago

Make a: - vacuum cannon - Hovercraft - An unreasonably powerful fan - A really loud siren/whistle

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Goodhart
Goodhart

Reply 12 years ago

One could gear it way down and make the loudest clock in the world LOL

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killerjackalope
killerjackalope

Reply 12 years ago

That would be the best use of a vacuum ever...

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Kiteman
Kiteman

Reply 12 years ago

Definitely a vacuum cannon - very cool toy.

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killerjackalope
killerjackalope

Reply 12 years ago

I would be interested in making a really powerful one, just to see what could be done with them, I suppose it's always going to limited by the pressure of the atmosphere but a hard vacuum would be giving you results similar to 30PSI if air pressure is around 15 (I think it's more like 14 can't remember, yes at sea level)

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Kiteman
Kiteman

Reply 12 years ago

You need a partial vacuum - as the projectile accelerates towards the piece of paper, the trace of air in the tube is compressed enough to push the paper off, otherwise it dramatically slows the projectile. Longer tubes give greater acceleration (the force is applied for longer), but also greater friction. The trick will be to find the balance.

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killerjackalope
killerjackalope

Reply 12 years ago

I see, so the key is to maximize force and minimize friction... In the case the larger the diameter the better it'd be within the vacuum motor's limits, since smaller objects have more surface area to mass ratio... Then again using a set power thing a long piece of tubing and a ball bearing with a bit of olive oil on it would probably be pretty good for the job. I could be completely off base about that one though, because there'd be more surface area for the atmospheric pressure to act upon...

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Kiteman
Kiteman

Reply 12 years ago

Th book where I originally came across these (Vacuum Bazookas, Electric Rainbow Jelly and 27 other Saturday Science Projects by Neil A. Downie) recommends that the projectile be at least twice as long as the diameter of the branch-pipe, to stop it turning and jamming as it passes the vacuum.

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killerjackalope
killerjackalope

Reply 12 years ago

One more thing to consider... I have some junk lying about, I'll get round to making one and tinker...

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Kiteman
Kiteman

Reply 12 years ago

Do you want scans of the relevant pages?

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kelseymh
kelseymh

Reply 12 years ago

Does a vacuum cannon suck giant steel spheres back into the tube? Or does it shoot a big hole of non-air out at people?

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Kiteman
Kiteman

Reply 12 years ago

Long tube, with a branch off very near one end. The vacuum-cleaner is connected to the branch and switched on. a piece of paper is placed over the end nearest the branch. A projectile is inserted into the end furthest from the branch, and held for a moment to allow the pressure in the pipe to drop. When it is released, external air pressure accelerates the projectile up the tube towards the branch. As it nears the paper-covered end, the paper falls off and the projectile exits at speed.

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Goodhart
Goodhart

Reply 12 years ago

A kind of "gun" version of the Air brush ?

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kelseymh
kelseymh

Reply 12 years ago

Whoa....nifty design. Thanks for the explanation! So it's a single-shot breech-loader. The paper cover is cheap for a disposable part, but I wonder whether it could be designed with a lightweight (.5mm Al?) cover plate mounted with a spring hinge?

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Kiteman
Kiteman

Reply 12 years ago

Low mass is essential. The paper isn't knocked aside by the projectile, it falls away as the last traces of air in the tube build up enough pressure to push it off. A spring would mean too much kinetic energy transferred to the "lid".

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killerjackalope
killerjackalope

Reply 12 years ago

I wonder if a really well sealed rubber plug being pulled on by a srping would work, though it might fall off too early. I suppose greaseproof paper would be good...

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Kiteman
Kiteman

Reply 12 years ago

A scrap of note-paper seemed to work fine.

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Lithium Rain
Lithium Rain

Reply 12 years ago

I love it when you get all philosophical, kelsey...

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Plasmana
Plasmana

Reply 12 years ago

vacuum cannon? Never heard such thing....

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killerjackalope
killerjackalope

Reply 12 years ago

Read down, kitemans explanation is a fair summation, been meaning to make one soon, I'll post it up...

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Goodhart
Goodhart

Reply 12 years ago

I am still thinking about what exactly I will do with the "motor" I have. :-) Although a vacuum former, and siren have my attention at the moment.

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killerjackalope
killerjackalope

Reply 12 years ago

I think a siren would be a good toy, if slightly damaging to the public conscience.

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arylic
arylic

12 years ago

Hey could you build a small electric go kart with the motor in the vacuum cleaner ?

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yourcat
yourcat

Reply 12 years ago

AC on batteries = lots of complicated circuitry.

possible, but much harder than just getting a DC motor.

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blugyblug
blugyblug

12 years ago

Vacuum Cannon? If i read kiteman correctly, then it would be a small gun that would only shoot as far as a normal pneumatic cannon charged to 14.7 psi? So basically it is pushed..(pulled?) with 14.7 pounds of force if the barrel is 1 inch in diameter. Not much, I pressurise stuff to 60psi... No i think that was stupid, sorry. Im only 13

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blugyblug
blugyblug

12 years ago

An air compressor, just mod it a bit. Some people have used that for their spud guns hehe...

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memyselfand1
memyselfand1

12 years ago

Could you possibly vacuum with it?

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thematthatter
thematthatter

12 years ago

you could use it to clean your room and impress your mom.

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skunkbait
skunkbait

Reply 12 years ago

If my kids tried that, my wife would die of heart failure. It's just not worth it!

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killerjackalope
killerjackalope

Reply 12 years ago

My mother hadn't been in my room for several weeks... I had gotten annoyed at the amount of glass, metal and junk the soles of my feet and cleaned, she popped in to ask if I wanted anything from the shop and ended up falling in the door in shock. I was surprised myself, noone asks if we want anything from the shop.

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chiok
chiok

Reply 12 years ago

Always reminds me of that sketch from Henry Enfield & Chums where Kevin asks his mum to borrow the vacuum cleaner and his mum faints. However, Kevin's intentions for the vacuum cleaner are other than cleaning his room...

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Goodhart
Goodhart

Reply 12 years ago

LOL, who knows though, if they sucked up everything on the floor (so they didn't have to pick it up); that might be expected :-)

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arylic
arylic

12 years ago

no............ what about a mini sub ?

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arylic
arylic

Reply 12 years ago

Hey check out this new forum i made for instructable fans please join and populate..

click here

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guyfrom7up
guyfrom7up

Reply 12 years ago

how would you make a sub with a vacuum? btw there's a reply button

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arylic
arylic

12 years ago

Good ideas but i need something more advance and cool..........

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guyfrom7up
guyfrom7up

Reply 12 years ago

vacuum former BAM