Semi homemade CPS with pieces from a XSHOT blaster
Semi homemade CPS with pieces from a XSHOT blaster
My goal is to make a CPS blaster by using pieces from a XSHOT blaster and spending $60 on the rest of the pieces.
Pieces that I am using from the XSHOT blaster are
The case.
Reservoir.
Nozzle assembly.
Pump.
Some of the tubing.
The first thing I want to figure out is how to mount the PC. this is my current idea. Once I have that figured out I want to figure out the firing valve my plan is to use a trigger to open It. this is what I have so far. Here’s some photos of the blaster. Any ; feedback, questions, criticism, is welcome.
Pieces that I am using from the XSHOT blaster are
The case.
Reservoir.
Nozzle assembly.
Pump.
Some of the tubing.
The first thing I want to figure out is how to mount the PC. this is my current idea. Once I have that figured out I want to figure out the firing valve my plan is to use a trigger to open It. this is what I have so far. Here’s some photos of the blaster. Any ; feedback, questions, criticism, is welcome.
Last edited by Zman on Thu Aug 04, 2022 11:01 am, edited 2 times in total.
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
Re: Semi homemade CPS with pieces from a XSHOT blaster
Major update
First starting with the pc I decided to mount it to the top with Bolts
I’ll be using two layers of LRT with the outer one having the ID that matches the OD of the inner layer from McMaster
As far as the firing valve i’ll be using a ball valve with a custom handle attached to a rod that will have springs to reset the trigger attach to the rod will be rope attaching to the trigger
I’m pretty sure that I will not need any check valves if wrong please let me know all I think I need is listed
LRT
tee
PT
reducer
Tube clamps
PVC
PVC end cap
Tubing threaded end
Nuts and bolts
Epoxy
Ball valve
Custom handle
Spring
All thread rod
Custom all thread rod parts
Rope
3-D printed trigger and Trigger slider box
Plus all the pieces I listed in my last post that I’ll be using from the XSHOT Blaster
First starting with the pc I decided to mount it to the top with Bolts
I’ll be using two layers of LRT with the outer one having the ID that matches the OD of the inner layer from McMaster
As far as the firing valve i’ll be using a ball valve with a custom handle attached to a rod that will have springs to reset the trigger attach to the rod will be rope attaching to the trigger
I’m pretty sure that I will not need any check valves if wrong please let me know all I think I need is listed
LRT
tee
PT
reducer
Tube clamps
PVC
PVC end cap
Tubing threaded end
Nuts and bolts
Epoxy
Ball valve
Custom handle
Spring
All thread rod
Custom all thread rod parts
Rope
3-D printed trigger and Trigger slider box
Plus all the pieces I listed in my last post that I’ll be using from the XSHOT Blaster
Last edited by Zman on Thu Aug 04, 2022 11:03 am, edited 2 times in total.
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
Re: Semi homemade CPS with pieces from a XSHOT blaster
You'll have a lot of trouble getting the outer tube over the inner tube if the ID matches the OD. The ID of the outer tube should be a bit larger.
Also, because the nozzle is so small, it's probably not worthwhile to have two tubes. It might not increase performance that much because the performance is limited by the nozzle, but it would add cost and be harder to pump. Two tubes might even decrease performance if the pressure is too high for a nozzle of this size.
As for the remainder, I think you'll have a lot of trouble getting an off-the-shelf ball valve to work. Again, my suggestion is to use a valve that'll be easier to get to work with a trigger. Ball valves can be difficult to use a trigger with. It's also hard to comment about if any parts are missing. If you're missing anything, you'll know when you're building.
Re: Semi homemade CPS with pieces from a XSHOT blaster
How much range would you get with just one layer
I can always increase the nozzle size but I’m might just be good with doing one layer
through testing I’ll was able to find out the angle that you could pull it at and using the custom handle that I will have photos of the CAD for it SoonSSCBen wrote: ↑Sun May 29, 2022 10:11 pmAs for the remainder, I think you'll have a lot of trouble getting an off-the-shelf ball valve to work. Again, my suggestion is to use a valve that'll be easier to get to work with a trigger. Ball valves can be difficult to use a trigger with. It's also hard to comment about if any parts are missing. If you're missing anything, you'll know when you're building.
The rest of the trigger part I will have to figure out no matter what valve I use
Any other comments are welcome
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
Re: Semi homemade CPS with pieces from a XSHOT blaster
I'd guess you'd see a range of around 35 feet, maybe low 40s. It's hard to know without testing, though. I could get about 42 feet with a single tube in this basic homemade water gun.
You could experiment with larger nozzle sizes and two layers, but as I said, I'm not confident adding a second layer will increase range that much.
Re: Semi homemade CPS with pieces from a XSHOT blaster
I was really hoping the range around 50-60 how could I do thisSSCBen wrote: ↑Mon May 30, 2022 5:08 pmI'd guess you'd see a range of around 35 feet, maybe low 40s. It's hard to know without testing, though. I could get about 42 feet with a single tube in this basic homemade water gun.
You could experiment with larger nozzle sizes and two layers, but as I said, I'm not confident adding a second layer will increase range that much.
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
Re: Semi homemade CPS with pieces from a XSHOT blaster
I'm not sure it's possible to get 50 to 60 feet of range using the existing nozzle. As I said, "you can't upgrade a tricycle to perform like a monster truck." There are serious limits to how much you can increase the performance while using original parts like the nozzle. It wouldn't be hard to get more range with a different nozzle. You'd want a nozzle with a larger diameter, and a flow system designed to have a higher flow rate and possibly higher pressures.
Now, some great blasters are really efficient. The SS 300 is famous for having good range (I recall 45-55 feet) despite its relatively small nozzle (about 0.15 inches, 6-8X flow rate). But that blaster was designed to have great performance from the start. It wasn't an upgrade to a blaster not designed to handle the flow rates needed for high range.
Re: Semi homemade CPS with pieces from a XSHOT blaster
What do you mean by flow systemSSCBen wrote: ↑Mon May 30, 2022 8:50 pmI'm not sure it's possible to get 50 to 60 feet of range using the existing nozzle. As I said, "you can't upgrade a tricycle to perform like a monster truck." There are serious limits to how much you can increase the performance while using original parts like the nozzle. It wouldn't be hard to get more range with a different nozzle. You'd want a nozzle with a larger diameter, and a flow system designed to have a higher flow rate and possibly higher pressures.
Now, some great blasters are really efficient. The SS 300 is famous for having good range (I recall 45-55 feet) despite its relatively small nozzle (about 0.15 inches, 6-8X flow rate). But that blaster was designed to have great performance from the start. It wasn't an upgrade to a blaster not designed to handle the flow rates needed for high range.
Also right now I’m thinking the best option would be to get one layer and then when I have more money get a second one for testing
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
Re: Semi homemade CPS with pieces from a XSHOT blaster
By "flow system", I mean the combination of the pressure chamber, firing valve, tubing leading from the pressure chamber to the valve to the nozzle, and nozzle.
Re: Semi homemade CPS with pieces from a XSHOT blaster
What size of tubing would you suggest
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
Re: Semi homemade CPS with pieces from a XSHOT blaster
If you're going to be using the original nozzle, I don't recommend upgrading the tubing size as that's not likely to improve performance much if at all.
I can't make a specific recommendation in terms of tubing size aside from that the original internal tubing is not likely large enough. 1/2" PVC pipe (internal diameter of about 0.62 inches) seems to be enough to get 60 feet of range without much trouble (3/16 inch nozzle). You want the pipe/tubing leading to the nozzle to be much larger than the nozzle outlet diameter because that reduces pressure losses.
I can't make a specific recommendation in terms of tubing size aside from that the original internal tubing is not likely large enough. 1/2" PVC pipe (internal diameter of about 0.62 inches) seems to be enough to get 60 feet of range without much trouble (3/16 inch nozzle). You want the pipe/tubing leading to the nozzle to be much larger than the nozzle outlet diameter because that reduces pressure losses.
Re: Semi homemade CPS with pieces from a XSHOT blaster
Original tubing is 1/4 internal diameterSSCBen wrote: ↑Tue May 31, 2022 12:56 pmIf you're going to be using the original nozzle, I don't recommend upgrading the tubing size as that's not likely to improve performance much if at all.
I can't make a specific recommendation in terms of tubing size aside from that the original internal tubing is not likely large enough. 1/2" PVC pipe (internal diameter of about 0.62 inches) seems to be enough to get 60 feet of range without much trouble (3/16 inch nozzle). You want the pipe/tubing leading to the nozzle to be much larger than the nozzle outlet diameter because that reduces pressure losses.
Right now I feel like I’m gonna have to heavily modify the nozzle so I can do a bigger tube size worst case scenario I make a custom nozzle
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
Re: Semi homemade CPS with pieces from a XSHOT blaster
I have a Few questions
First : I’ve going for two layers of LRT what Should the ID and OD be for the first layer and what should the ID and OD Be for the second layer
Second : what should I use for the PC case
Third : What size of fitting should I use for the part that connects to the LRT
Fourth : What pressure rating should the tubing be
First : I’ve going for two layers of LRT what Should the ID and OD be for the first layer and what should the ID and OD Be for the second layer
Second : what should I use for the PC case
Third : What size of fitting should I use for the part that connects to the LRT
Fourth : What pressure rating should the tubing be
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
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Re: Semi homemade CPS with pieces from a XSHOT blaster
1. This depends on the performance you want, but if you are going to layer the inner tube should have an outer diameter less than the inner diameter of the outer tube. You won't be able to slide the inner tube inside the outer tube otherwise!
2. I do not know what others will say, but I've had success using 4 inch PVC drainage pipe. It is rather thin and lightweight but roughly a good diameter for one layer of LRT. One layer of LRT expands to just over 3 inches in diameter; I do not recall how much two layers expands, though.
3. Again, this depends on the performance you want. A larger diameter would support a higher flow rate. While it is possible to stretch the tubing over a larger barb size, I suggest using the inner diameter of your inner tube as the barb size due to the difficulty of using a larger barb size.
4. Again, this depends on the performance you want.
I suggest consulting the SSC website for Ben's SuperCPS water gun for more information about what has been typically tried in the past. He is very thorough about what parts to use.
2. I do not know what others will say, but I've had success using 4 inch PVC drainage pipe. It is rather thin and lightweight but roughly a good diameter for one layer of LRT. One layer of LRT expands to just over 3 inches in diameter; I do not recall how much two layers expands, though.
3. Again, this depends on the performance you want. A larger diameter would support a higher flow rate. While it is possible to stretch the tubing over a larger barb size, I suggest using the inner diameter of your inner tube as the barb size due to the difficulty of using a larger barb size.
4. Again, this depends on the performance you want.
I suggest consulting the SSC website for Ben's SuperCPS water gun for more information about what has been typically tried in the past. He is very thorough about what parts to use.
The Drenchenator, also known as Lt. Col. Drench
Re: Semi homemade CPS with pieces from a XSHOT blaster
have you had any problems with your LRT burstingDrenchenator wrote: ↑Tue Jul 05, 2022 7:19 am2. I do not know what others will say, but I've had success using 4 inch PVC drainage pipe. It is rather thin and lightweight but roughly a good diameter for one layer of LRT. One layer of LRT expands to just over 3 inches in diameter; I do not recall how much two layers expands, though.
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
Re: Semi homemade CPS with pieces from a XSHOT blaster
Some LRT is prone to bursting. I've found that the thickest smaller diameter tubes off McMaster-Carr tend to burst no matter what I do and I recommend against using them for that reason. (Particularly filling them with air as the bursting will cause hearing damage.)
The tube I recommend on SSC works well in my experience, and will only burst if damaged, overfilled, or worn out.
The tube I recommend on SSC works well in my experience, and will only burst if damaged, overfilled, or worn out.
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Re: Semi homemade CPS with pieces from a XSHOT blaster
I only recall one time when the LRT burst and it was for a tube that was quite worn out and highly used. That is why a case for the LRT is important, because it will contain any issues if failure were to occur. 4 inch drain pipe is thin only by comparison for schedule 40 pipe. It is certainly thick enough for structural and safety purposes.
I agree with Ben that the "standard" size tubes are fairly robust. I assume that they are at least as good in quality as the tubes used in old CPS guns from the 1990s, but their life is likely decreased due to increased pressure during use, since nobody here builds homemades with pressure relief values. Fortunately that is not needed since replacing the tube is straightforward.
I agree with Ben that the "standard" size tubes are fairly robust. I assume that they are at least as good in quality as the tubes used in old CPS guns from the 1990s, but their life is likely decreased due to increased pressure during use, since nobody here builds homemades with pressure relief values. Fortunately that is not needed since replacing the tube is straightforward.
The Drenchenator, also known as Lt. Col. Drench
Re: Semi homemade CPS with pieces from a XSHOT blaster
@SSCBen
I : SuperCPS In your article you’re able to slide the LRT over a fitting for larger tubing would you recommend this
II : what was the PC size that you would recommend for two layers like you did in your SuperCPS article
III :I know that Killer 8 was able to slide over a tube with the same OD as the inner one ID and I read somewhere that you said that you think the room between the ones that you had on your SuperCPS cause a decrease in performance
I : SuperCPS In your article you’re able to slide the LRT over a fitting for larger tubing would you recommend this
II : what was the PC size that you would recommend for two layers like you did in your SuperCPS article
III :I know that Killer 8 was able to slide over a tube with the same OD as the inner one ID and I read somewhere that you said that you think the room between the ones that you had on your SuperCPS cause a decrease in performance
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
Re: Semi homemade CPS with pieces from a XSHOT blaster
Yes, I would recommend sliding the tubing over as large a barbed fitting as you're able to securely slide it over. In my case, whatever I reported in the SuperCPS article is as large as I was able to. You want the barbed fitting to be large to reduce pressure losses.
I'm not sure what you mean by "PC size" but the tubes I constructed the PC container from were several feet long. I could put probably 1.5 liters or more into the pressure chamber.
As for the gap between the tubes, I imagine that there would be a slight performance increase if there was no gap between the layered tubes. Imagine that you're layering on an outer tube with a much larger ID than the OD of the inner tube. (Say, 3 inch ID outer tube for a 0.75 inch OD inner tube that expands to 3.5 inches OD.) Obviously, the outer tube is going to not contribute much to the pressure in the inner tube because it's not expanding that much. That's an extreme example, but it gives you the idea that the gap might decrease performance a bit than if there was no gap. Given that the gap is small, I wouldn't worry about it.
I'm not sure what you mean by "PC size" but the tubes I constructed the PC container from were several feet long. I could put probably 1.5 liters or more into the pressure chamber.
As for the gap between the tubes, I imagine that there would be a slight performance increase if there was no gap between the layered tubes. Imagine that you're layering on an outer tube with a much larger ID than the OD of the inner tube. (Say, 3 inch ID outer tube for a 0.75 inch OD inner tube that expands to 3.5 inches OD.) Obviously, the outer tube is going to not contribute much to the pressure in the inner tube because it's not expanding that much. That's an extreme example, but it gives you the idea that the gap might decrease performance a bit than if there was no gap. Given that the gap is small, I wouldn't worry about it.
Re: Semi homemade CPS with pieces from a XSHOT blaster
If I use the same size LRT that you did for the superCPS what diameter of pipe should I use for the PC case?
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable
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