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Unread postAuthor: pyromanic13 » Sun Feb 26, 2006 12:53 am

I keep trying to post pics (small ones so its not file size) but it wont let me :evil:
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Unread postAuthor: Atlantis » Sun Feb 26, 2006 1:06 am

Look towards the bottom for the "ADD REPLY" button, it pulls up the more advanced posting screen kinda like your original post did. As for size, that was just a standard paint drawing so it couldn't have been too big.
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Unread postAuthor: Shrimphead » Sun Feb 26, 2006 1:14 am

I would understand it with an animation. I am just get confused when trying to understand that picture with just a short explanation. I really want an animation of it because I want to understand how it could become and auto.
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Unread postAuthor: Atlantis » Sun Feb 26, 2006 1:28 am

Honestly I have no idea how to make an animation. Look at this animation here...
http://www.spudfiles.com/forums/download.php?id=70&
Its basically that, think of the bolt as the rod that pushes downward, when the bolt comes back it triggers the slider valve in the back, cutting off the air supply while dumping the pilot chamber. After all this the process starts over. It doesn't matter what kind of valve you use, I just used this as an example.
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Unread postAuthor: TfAv1228 » Sun Feb 26, 2006 1:36 am

pyromanic u hve to go to the very bottom of the page to where it says add reply to use the full version instead of the quick replay at the bottom of each page
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Unread postAuthor: Shrimphead » Sun Feb 26, 2006 1:19 pm

I think I understand it now Atlantis. That might work. Ya I don't really know how to do animations either.
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Unread postAuthor: Atlantis » Sun Feb 26, 2006 3:35 pm

Finally someone who gets it. I don't even know what program to use.
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Unread postAuthor: boilingleadbath » Sun Feb 26, 2006 8:39 pm

Running some numbers, a pneumatic-spring system is very possible - a 2" diameter pipe (24" long) with a starting pressure of 100 PSIG would reach about 230 PSIG with a 12" stroke, which is well within the limmits of 2" sch 40.
This would provide 300-600 lbs of force, allowing a 150 lb load (opperator + device) to bounce about 3' in the air. Jumps up to about 4' could be acheived while keeping the peak pressure within the ratings of sch 40, and roughly 5' jumps would be possible with a sch 80 construction... although it may be more practical to go with a 3" cylinder (~7' safe jumps, ~9' max jumps)
One thing though: TEFLON/FEP ENCAPSULATED O-RINGS! Keeping friction in the system to a min would be important if you don't want to feel like you are bouncing on mud.

A self-powered design would be less practical. Perhaps one could feed it air at 500 psi via a spool valve or something. (a pop-off valve at the bottom of the stroke would return the system to pre-bounce conditions)
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Unread postAuthor: pyromanic13 » Mon Feb 27, 2006 10:33 pm

I now under stand the diagram cause I thought about it at school......... this sounds like it would be a very fun project prolly not gonna make it tho
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Unread postAuthor: Atlantis » Tue Feb 28, 2006 6:32 pm

I'm glad you guys like my design. It's kinda funny how you all got it at once. Funny thing happened today, 1 of the smartest kids I know asked me to come to CMU with him for a chance to win a $2000 scholarship by simply designing something. They don't tell us what to make till we get there, but since I'm good at comming up with things quickly I should have a good chance.
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Unread postAuthor: dragon finder » Tue Feb 28, 2006 6:39 pm

good luck hope you get it.
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Unread postAuthor: Shrimphead » Tue Feb 28, 2006 11:50 pm

What's CMU? Sounds interesting and I'm pretty sure that you can come up with something great. Good luck!
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Unread postAuthor: pyromanic13 » Thu Mar 02, 2006 10:35 pm

I'm gonna eigther make this or a hovercraft after I finish my paintball morter
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Unread postAuthor: spudzinger » Thu Apr 06, 2006 2:43 pm

How about using a ball valve that you could get to spin at a regular speed continuosly.For the shaft you use capped off PVC that would fit on another piece of pvc. Ok this hard to explain nill try to make a drawing on this stuoid school comp.
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Unread postAuthor: WOW!! » Wed May 24, 2006 6:37 pm

LMAO, Use a jackhammer. :twisted: Talk about... i dont even know lol
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