Go Back   Super Soaker Central > Water gun technology > Engineering water guns
User Name
Password
FAQ Members List Calendar Mark Forums Read


Welcome to the SSC Forums! You are currently viewing our boards as a guest which gives you limited access. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and more. Registration is fast, simple and absolutely free so please, join our community today! If you have any problems with the registration process or your account login, please contact contact us.
Important note: The SSC forums are now in archive mode. WaterWar.net is the new online discussion board for the water gun hobby.

Reply
 
Thread Tools
Old 05-06-2011, 09:13 AM   #1
wetmonkey442
Retired Moderator
 
wetmonkey442's Avatar
 
Join Date: Jun 2003
Posts: 320
UserID: 47
Default Pressure in a CPS system?

Does anyone have any idea as to the extent of pressure cause by an elastic bladder? Specifically, I'm interested in the amount of pressure normally generated by a mid-size cylindrical elastic bladder (like that in a CPS 4100).

With air-pressure applications I can easily calculate these sorts of things, but I'm lost when it comes to elastics! I'm curious because I am currently building a CPS homemade and many of the valves are being made from scratch in order to save weight and increase customization. If I know the maximum PSI generated by a full elastic bladder, I can determined which materials I want to use in construction.

Thanks!
__________________
Join the fight! Support water warfare in your area today!
wetmonkey442 is offline   Reply With Quote
Old 05-06-2011, 10:25 AM   #2
cantab
Administrator
 
cantab's Avatar
 
Join Date: Oct 2007
Location: England
Posts: 1,492
UserID: 1400
Default Re: Pressure in a CPS system?

If you know the the chamber's unexpanded dimensions, and its dimensions when a given amount of water is pumped in, you can determine the strain. If you then know the elastic modulus of the rubber you can calculate the stress in the rubber, and from that the pressure in the water.
__________________
I work on Windows. My toolbox is Linux.
Arsenal:
Super Soaker: XP215, 2xXP220, Liquidator, Aquashock Secret Strike M(odded), Arctic Blast M, CPS1200, CPS2100, SC Power Pak, 3l aquapack, 1.5l aquapack
Water Warriors: Jet, Sting Ray M, Shark, Argon M, Tiger Shark, PulseMaster
Others: Waterbolt, The Blaster, Storm 500, Shield Blaster 2000, generic PR gun, generic backpack piston pumper (broken), 3l garden sprayer M, 10l water carrier:
cantab is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -5. The time now is 01:02 PM.


Powered by vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright ©2003 - 2011 The Super Soaker Central project