I had some free time and was bored so I made this chart because I wanted to visualize how pump force changes with pump shaft ID. I would post a image preview but the image seems to get scaled down.
Link:
https://i.imgur.com/HrqiGRm.png
A chart showing pump diameter vs. force
Re: A chart showing pump diameter vs. force
Nice work. Should be useful for folks designing water guns.
- SEAL
- Posts: 2537
- Joined: Thu Apr 29, 2010 11:37 am
- Location: Charlotte, NC
- WWN League Team: Catskill Mountain SEALs
- Contact:
Re: A chart showing pump diameter vs. force
That's pretty awesome. Unfortunately those numbers don't mean a whole lot all by themselves. Does any body know how much pressure is typically built up in a soaker? Not really sure how many pounds of force is considered a lot either. I'm assuming anything over 40 lbs (going by the numbers in red)? I wonder how much force is needed to pump a CPS gun?
I've always considered 3/4" to be a good size for a pump, or 1" on larger weapons. Bigger pumps could make use of some kind of mechanical assist, like the lever mechanism on the Soakzooka (wow, I'm actually referencing a Hasbro gun). However there'd also be the problem of size and weight. Even if you were strong enough to use a 3" pump, such a gun would be freaking enormous.
I didn't know they made 16" PVC. Although where I work there is a very large tube of PVC that looks about 12". I think it's used as some kind of housing for a prototype product. But anyway, I don't think it's pressure rated or anything. The only water war-related use for pipe that big that I can think of would be a reservoir for some kind of stationary turret cannon. Nobody really builds anything like that though.
I've always considered 3/4" to be a good size for a pump, or 1" on larger weapons. Bigger pumps could make use of some kind of mechanical assist, like the lever mechanism on the Soakzooka (wow, I'm actually referencing a Hasbro gun). However there'd also be the problem of size and weight. Even if you were strong enough to use a 3" pump, such a gun would be freaking enormous.
I didn't know they made 16" PVC. Although where I work there is a very large tube of PVC that looks about 12". I think it's used as some kind of housing for a prototype product. But anyway, I don't think it's pressure rated or anything. The only water war-related use for pipe that big that I can think of would be a reservoir for some kind of stationary turret cannon. Nobody really builds anything like that though.
~Hotel Oscar Golf~
We probably won't be back, but the legacy lives on.
We probably won't be back, but the legacy lives on.
Re: A chart showing pump diameter vs. force
We have some information on pressures reported on Super Soaker boxes here:
http://www.sscentral.org/physics/man_pumps.html
Drenchenator figured out the forces for various water guns based on the reported information.
It would be simpler to use a smaller pump diameter than to use a lever. The net effect is the same as the pump volume needs to decrease in either case, but a lever would have more parts and be harder to build.
http://www.sscentral.org/physics/man_pumps.html
Drenchenator figured out the forces for various water guns based on the reported information.
It would be simpler to use a smaller pump diameter than to use a lever. The net effect is the same as the pump volume needs to decrease in either case, but a lever would have more parts and be harder to build.
Re: A chart showing pump diameter vs. force
Yep, I made anything over 40 lbs red. The coloring is arbitrarily chosen, but I think that once the force gets around or over 30 lbs, it starts to become unrealistic in combat, possibly even before 30 lbs. What do you guys think?
-
- Posts: 3975
- Joined: Tue Jul 20, 2004 9:29 pm
- Location: Charleston
- WWN League Team: Havoc
- Contact:
Re: A chart showing pump diameter vs. force
Thank you for making this. This is really useful.
https://hydrowar.wordpress.com/
SEAL wrote:If you ain't bloody and muddy by the end of the day, you went to a Nerf war.
Who is online
Users browsing this forum: No registered users and 39 guests