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Air Motor

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Air Motor

Unread postAuthor: VH_man » Sun Aug 31, 2008 8:46 pm

Video shows everything......

I think i might end up using this system for some kind of automatic gun.... :-D

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Unread postAuthor: hi » Sun Aug 31, 2008 10:49 pm

that video is in complete in my opinion. it certainly is interesting, but a little more information is in order i think.

other wise congratulations.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: VH_man » Sun Aug 31, 2008 10:55 pm

what info do you desire?

its at a pressure of about 18-20 PSI (high flow)

the air cylinder is 1/2 inch bore, about 8 inch stroke

switching is done by a 12V power supply, an electronic solenoid valve, and 2 electronic switches.

cyclic rate is around 8-10 in/out's per second, and rate increases with flow.......
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Unread postAuthor: hi » Sun Aug 31, 2008 11:27 pm

i havent built one...yet.

i just couldnt tell if it was a rotary motor or a traditional motor with a piston. i dont understand what the solenoid valve is for. the ones i have seen are purely mechanical and operate by pushing up a one way valve on the way up, which lets a burst of air in, which forces the piston back down.

where did you get the design/idea from?

what is it used for? is it just for fun, or do you play to power something with it? air motors have potential, especially with rising gas prices...
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: jrrdw » Mon Sep 01, 2008 7:42 am

Unless you use a good heavy flywheel that long of a stroke is going to defeat the usage. For power and speed you need a big bore and short stroke. No load is the only reason it's running now.

Hook something to the crankshaft and try to power something, then you will see a huge difference in performance.

Very cool though. Are you using a oil less compressor pump for the build?
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When life gives you lemons...throw them back they suck!
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Re: Air Motor

Unread postAuthor: spudkilla » Mon Sep 01, 2008 9:04 am

Nice, I used to have a vex kit.
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Why do I try to make a relevant post?
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Unread postAuthor: VH_man » Mon Sep 01, 2008 11:37 am

Thanks for the questions.

the electronic solenoid is all that i had on hand, and it happened to turn into my air "swtich". if i ever actually construct an air motor i will be using a mechanical switch.

BTW, all the thing does is make a rod move back and forth really fast....... but its a start. Im thinking i want to make it spin something, but i more want to adapt it to making an automatic airgun of somesort. If i take off the rear swtich, the cylinder remains in the backward position. if i hit the switch briefly, the cylinder moves to the outward position and then returns to the "in" position....

sorry about the crappy video, i didnt realize it was THAT bad...... im kinda pissed i took it apart now, because it seems like i only just tapped into its potential.
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