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PVC Vurtego pogo stick

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Unread postAuthor: homedepotpro » Sun Jan 06, 2008 1:41 am

cwazy1 wrote:but isnt finding the fittings for it going to be hard?

that wasn't the question, plus i think i going to make them out of round pvc bar stock
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Unread postAuthor: cwazy1 » Sun Jan 06, 2008 2:21 am

what is round pvc bar stock?
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Unread postAuthor: homedepotpro » Sun Jan 06, 2008 2:24 am

its solid pvc, not a tube
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Unread postAuthor: cwazy1 » Sun Jan 06, 2008 2:25 am

oh, you're gonna make fittings out of a solid block of pvc?!!? intense. where would i get pvc bar stock?
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Unread postAuthor: homedepotpro » Sun Jan 06, 2008 2:31 am

mcmaster of coures
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Unread postAuthor: MrCrowley » Sun Jan 06, 2008 2:33 am

Mcmaster of course :)

They sell all types of solid bar stock.

Edit: Beaten again :(
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Unread postAuthor: Isomer » Sun Jan 06, 2008 2:56 am

im not sure if somebody said this yet but w/e
the shocks for higher end mountain bikes are pressurized with just air-"shock" pumps
Some of the principles from there could be possibly used here as well
For example: they use an air cylinder for compression but i believe they use a spring of some sort for rebound, not sure but someone might wana look into it
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Unread postAuthor: cwazy1 » Sun Jan 06, 2008 4:15 am

ahh mcmaster,

umm isomer, what are you talking about?? yes shock pumps can pump up sispension on bikes. we are building pogo sticks right? it uses essentially the same thing as a shock. theres an air cylinder and that cylinder gets pressurized and it wants to expand, thus forming the up and down motion of a pogo.

only some bikes have springs for the front shock, some have air only, but some have both.
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Unread postAuthor: Solar » Sun Jan 06, 2008 5:49 am

BE CAREFUL!!! One of my best friends died after being injured using one of these pneumatic pogo sticks last month. He was an extreme athlete and in very good shape as well as a very coordinated individual. His injury was caused during a dismount in which a tendon sheared clean off of his kneecap.

Regarding the patent...
An old BMX racing buddy of mine invented a system like this about 15 years ago and marketed them. The patent that was shown is an extension of a former provisional patent which tells me that they have been unsuccessful in receiving a utility patent for any of the design. I don't see my friends patent in the references. I will do some further looking.
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Unread postAuthor: cwazy1 » Sun Jan 06, 2008 7:07 pm

lol thanks for the safety concern solar, but im pretty sure we know what we're getting ourselves into. plus, i can only get about 3-4 feet of actual air. so its not like the 7 feet that the commercial pogo's have.

EDIT: new pics.

full shot with paint
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Redid the bottom so i can make the piston servicable.
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hella sweet foot petals i made, very tacky, no more slipping. very comfy as well
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so i blocked ohh tha handle part to get a higher ratio. . its more like 3.3-1 now. . the block is about 1 inch above the schrader valve.
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Unread postAuthor: homedepotpro » Mon Jan 07, 2008 9:06 pm

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Unread postAuthor: cwazy1 » Mon Jan 07, 2008 10:19 pm

yeah one word of caution, if you're gonna make the handle bars out of pvc, use soemthing to strengthen them cuz one of my handles cracked off when i fell and the pogo stick hit the ground hard.

nice vid HDP, what i see is that your stick has a really slow bounce. wouldnt that hurt your preformance? also, i see that your compression chanber is very long making it easier to hit yourself in the face if you fell wrong..lol
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Unread postAuthor: MrCrowley » Mon Jan 07, 2008 10:25 pm

I'm just waiting for the video when someone get hurt, really, really badly :D

<A HREF="http://www.youtube.com/watch?v=b2A3VED6EGk">Similiar to this</a> :P
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Unread postAuthor: cwazy1 » Tue Jan 08, 2008 1:04 am

LOLOLOLOLOLOL the guys gets thrown out like none other.
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Unread postAuthor: MrCrowley » Tue Jan 08, 2008 1:13 am

Girls aren't they?
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