Interesting and useful items.
- Gippeto
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Have been doing a bit of googling this evening, and came across this interesting device...at least I found it interesting.
And this too:
http://www.rotaryforum.com/forum/attach ... 1241078276
And this too:
http://www.rotaryforum.com/forum/attach ... 1241078276
"It could be that the purpose of your life is to serve as a warning to others" – unknown
Liberalism is a mental disorder, reality is it's cure.
Liberalism is a mental disorder, reality is it's cure.
- jackssmirkingrevenge
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Veeeeery interesting.... so 30 x 150 psi means 4500 psi from your average compressor? I'm guessing it does very low volumes though, and from what I can tell is the equivalent of fitting a pneumatic diaphragm to drive a shock pump.
Not cheap, $55 for a slide valve?! http://bogertaviation.com/index.php?pag ... &Itemid=23
Is that you with the autogyro?
Not cheap, $55 for a slide valve?! http://bogertaviation.com/index.php?pag ... &Itemid=23
Is that you with the autogyro?
hectmarr wrote:You have to make many weapons, because this field is long and short life
- Gippeto
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No, not I. Would only be caught dead in one of those.
The diaphragm chamber is a service brake chamber from a big truck...it's actually 30 in2 effective area (Type 30)... the long stroke chambers(Type 30LS) have a 3" stroke.
Considering they're VERY common, the cost is also VERY low...have seen them online for ~$20-30
The diaphragm chamber is a service brake chamber from a big truck...it's actually 30 in2 effective area (Type 30)... the long stroke chambers(Type 30LS) have a 3" stroke.
Considering they're VERY common, the cost is also VERY low...have seen them online for ~$20-30
"It could be that the purpose of your life is to serve as a warning to others" – unknown
Liberalism is a mental disorder, reality is it's cure.
Liberalism is a mental disorder, reality is it's cure.
- jackssmirkingrevenge
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Staying with PVC, 150 psi on say a 4" piston is a force of 1885 lbs... hooked up to say a 0.5" head diameter pump, that gives you a maximum pressure potential of OVER 9000 PSI!
Slide valve and QEV to power every stroke...
Slide valve and QEV to power every stroke...
hectmarr wrote:You have to make many weapons, because this field is long and short life
- Gippeto
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Safety note...if using a brake chamber, use a service brake chamber...the "double chamber" brake pots contain the parking brake spring, which requires special tools and knowledge to work with...VERY dangerous....as in "crushed rib cage" kind of dangerous.
Priced out a Type 30LS service brake chamber locally @ $40+tax
Priced out a Type 30LS service brake chamber locally @ $40+tax
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Liberalism is a mental disorder, reality is it's cure.
Liberalism is a mental disorder, reality is it's cure.
- Gippeto
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Not familiar with your terminology, but I suspect the answer is yes.
Pressure(100psi) acting upon surface area (30 in2) to generate force (3000lbs)...that force acting upon a reduced surface area (1 in2 to generate a higher pressure (3000psi).
Pressure(100psi) acting upon surface area (30 in2) to generate force (3000lbs)...that force acting upon a reduced surface area (1 in2 to generate a higher pressure (3000psi).
"It could be that the purpose of your life is to serve as a warning to others" – unknown
Liberalism is a mental disorder, reality is it's cure.
Liberalism is a mental disorder, reality is it's cure.
- Gippeto
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"It could be that the purpose of your life is to serve as a warning to others" – unknown
Liberalism is a mental disorder, reality is it's cure.
Liberalism is a mental disorder, reality is it's cure.
- jackssmirkingrevenge
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loving the BB shotgun at 2:37
hectmarr wrote:You have to make many weapons, because this field is long and short life
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This looks like something that could easily be duplicated using two air cylinders of different bores. The one with the larger bore, of course, drives the one with the smaller bore. In fact, that's quite similar to what they seem to have done with an earlier model:
http://bogertaviation.com/index.php?pag ... &Itemid=23
Although I suspect that here, there is a single shaft with duel pistons, one for each size bore.
http://bogertaviation.com/index.php?pag ... &Itemid=23
Although I suspect that here, there is a single shaft with duel pistons, one for each size bore.
- wyz2285
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Assuming that the input air used to push the strock is then exhausted by the slide valve... for each amount of effective charge, 30 times more air is wastedPressure(100psi) acting upon surface area (30 in2) to generate force (3000lbs)...that force acting upon a reduced surface area (1 in2 to generate a higher pressure (3000psi).
CpTn_lAw wrote: "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? "
- Gippeto
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It takes energy to do work.
The operational cost of such a unit is still very low compared to any alternatives I have available. Even a box of doughnuts for the firehall to get a fill is going to cost more than using this.
That I could use it at home in my garage to keep my tanks full on MY schedule is a huge bonus IMO.
The operational cost of such a unit is still very low compared to any alternatives I have available. Even a box of doughnuts for the firehall to get a fill is going to cost more than using this.
That I could use it at home in my garage to keep my tanks full on MY schedule is a huge bonus IMO.
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Liberalism is a mental disorder, reality is it's cure.
Liberalism is a mental disorder, reality is it's cure.
- wyz2285
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I don't have any large size compressor, so use my hill mk3 pump is still easier than pumping a bike pump a couple million times :p
CpTn_lAw wrote: "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? "
- Gippeto
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Collect some stuff...
Do some work...
A little more...
Bored the brass cylinder liner to final after work...no pic. With a little luck, I'll be testing by next weekend.
Last edited by Gippeto on Fri Jun 14, 2013 8:39 pm, edited 1 time in total.
"It could be that the purpose of your life is to serve as a warning to others" – unknown
Liberalism is a mental disorder, reality is it's cure.
Liberalism is a mental disorder, reality is it's cure.