OK Lemme start from the beginning.
I was looking on Ebay the other day for some penumatic cylinders to use on a project of mine when I came across a lot of 3 3"bore x 10" stroke pneumatic cylinders (basically just big ole' honkin cylinders, as we sometimes say here in the south
). So I start trying to figure out a way to justify buying these (they were only like $20 for all 3, shipped) so I eventually come up with the idea to make jumping shoes. Yes, jumping shoes. Ever played Pilotwings 64? There was a secret mode called Jumblehopper or something that I think is similar to what I want to do, I dunno cause I could never make it that far. But anyway at first I thought about simply using the cylinders as they are, pushing against the ground. However that turned out to need something like 25 CFM to get the velocity required, so I can't go that route. I finally thought up an idea to make the travel smaller and use a higher pressure, basically extend a sloped thingy to propel me forewards. The trigger mechanism would be installed inside some truck coil springs to give somewhat of a bounce to the step down, and to protect the valve, which would activate once the spring compressed past it. So I came up with a little pic here, made it in good old fashioned MS Paint, cause it's the quickest and I'm lazy .
I know that AO is really good about collective thinking. That prototype PB marker troubleshooting thread is like 6 pages, so I know with our combined efforts I can jump around and all. I wanna use this thread from start to finish of these so I can document it and get ideas from other people, if I decide to do it that is.
My goals are these:
Keep the costs low- I am a lowly college student and cannot afford big fancy things.
Jump about 5 feet forewards and 3 upwards or so, something in that range. Getting a short jog would be cool.
The air supply would go in a back-mounted unit of some kind. I thought about some paintball cylinders for their ease of use and availibility, but they're a pain to refill all the time, are costly, and I'm not sure if they can get the flow rate required. I don't really know what to use at this point.
With the boot part in this pic, I don't know exactly I should attach them to my legs, so I left it open for a spot just to stand in.
Oh yeah, one more thing. After I got done with the pic I realized it was pretty out of proportion, but it gets the idea across.
So, guys, will it work? The only way you can convince me to stop trying is to prove pretty good it can't work (safety's not too high on my list of priorities).
So let me know what you think.
Bert
I was looking on Ebay the other day for some penumatic cylinders to use on a project of mine when I came across a lot of 3 3"bore x 10" stroke pneumatic cylinders (basically just big ole' honkin cylinders, as we sometimes say here in the south
). So I start trying to figure out a way to justify buying these (they were only like $20 for all 3, shipped) so I eventually come up with the idea to make jumping shoes. Yes, jumping shoes. Ever played Pilotwings 64? There was a secret mode called Jumblehopper or something that I think is similar to what I want to do, I dunno cause I could never make it that far. But anyway at first I thought about simply using the cylinders as they are, pushing against the ground. However that turned out to need something like 25 CFM to get the velocity required, so I can't go that route. I finally thought up an idea to make the travel smaller and use a higher pressure, basically extend a sloped thingy to propel me forewards. The trigger mechanism would be installed inside some truck coil springs to give somewhat of a bounce to the step down, and to protect the valve, which would activate once the spring compressed past it. So I came up with a little pic here, made it in good old fashioned MS Paint, cause it's the quickest and I'm lazy .I know that AO is really good about collective thinking. That prototype PB marker troubleshooting thread is like 6 pages, so I know with our combined efforts I can jump around and all. I wanna use this thread from start to finish of these so I can document it and get ideas from other people, if I decide to do it that is.
My goals are these:
Keep the costs low- I am a lowly college student and cannot afford big fancy things.
Jump about 5 feet forewards and 3 upwards or so, something in that range. Getting a short jog would be cool.
The air supply would go in a back-mounted unit of some kind. I thought about some paintball cylinders for their ease of use and availibility, but they're a pain to refill all the time, are costly, and I'm not sure if they can get the flow rate required. I don't really know what to use at this point.
With the boot part in this pic, I don't know exactly I should attach them to my legs, so I left it open for a spot just to stand in.
Oh yeah, one more thing. After I got done with the pic I realized it was pretty out of proportion, but it gets the idea across.
So, guys, will it work? The only way you can convince me to stop trying is to prove pretty good it can't work (safety's not too high on my list of priorities).
So let me know what you think.
Bert
you may have to put a spring in the middle to help with the landing compression, but nothing that would hinder your weight being on the arcs
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