Author Topic: Making a HPA stirrpump.  (Read 1815 times)

Offline NeoTech

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Making a HPA stirrpump.
« on: December 12, 2012, 04:12:13 PM »
So, well ever since i joined this forum i have struggled with making an airgun.

And one of the major parts of that is to make a HPA stirrpump (bicycle pump) that can produce 3000-4500psi.

And i have been tinkering with single stage pumps and can quite easily reach 1800-2000psi. Buts its not really enought get any performance at all out of anything.
So anyone got an idea for how a 3 stage stirrpump would work?! Why i want it in the stirrpump model is because of portability. =)
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/

Offline Kinkajou

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Re: Making a HPA stirrpump.
« Reply #1 on: December 14, 2012, 08:44:40 PM »
It would be interesting to dissasemble a Crosman Benjamin pump, but I understand that it will only reach about 3000psi. Maybe a Hill pump could serve this purpose better.
I found a exploded parts list for the Benjamin pump that could give an idea of how it is made. I got this from Crosman site.
Good luck

Offline NeoTech

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Re: Making a HPA stirrpump.
« Reply #2 on: December 15, 2012, 06:24:44 AM »
yeah i have studied exploded parts diagrams from different manufacturers. But i cant really tell how the air travels through the pump. I need to get me one of those and take it apart i guess.
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/

Rob.Wilson

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Re: Making a HPA stirrpump.
« Reply #3 on: December 15, 2012, 05:34:12 PM »
Hi Andreas
have a look at this http://www.shoeboxcompressor.com/   

Rob

Offline NeoTech

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Re: Making a HPA stirrpump.
« Reply #4 on: December 16, 2012, 10:40:42 AM »
yeah that looks like a neat little device..  nothing you carry with you in the field though. but it gives you a hint of what its all about compressing into smaller and smaller diameter and so on. =)
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/