Semi homemade CPS with pieces from a XSHOT blaster

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Zman
Posts: 43
Joined: Wed May 18, 2022 10:22 am
Location: Anderson Missouri

Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Thu May 26, 2022 1:24 pm

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.
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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.
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Here’s some photos of the blaster.
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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 :cps2000:

Zman
Posts: 43
Joined: Wed May 18, 2022 10:22 am
Location: Anderson Missouri

Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Sun May 29, 2022 8:57 pm

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
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 :cps2000:

SSCBen
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Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by SSCBen » Sun May 29, 2022 10:11 pm

Zman wrote:
Sun May 29, 2022 8:57 pm
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
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.

Zman
Posts: 43
Joined: Wed May 18, 2022 10:22 am
Location: Anderson Missouri

Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Mon May 30, 2022 2:35 pm

SSCBen wrote:
Sun May 29, 2022 10:11 pm
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 bit larger.
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
SSCBen wrote:
Sun May 29, 2022 10:11 pm
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.
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 Soon
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 :cps2000:

SSCBen
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Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by SSCBen » Mon May 30, 2022 5:08 pm

Zman wrote:
Mon May 30, 2022 2:35 pm
How much range would you get with just one layer
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.

Zman
Posts: 43
Joined: Wed May 18, 2022 10:22 am
Location: Anderson Missouri

Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Mon May 30, 2022 8:17 pm

SSCBen wrote:
Mon May 30, 2022 5:08 pm
Zman wrote:
Mon May 30, 2022 2:35 pm
How much range would you get with just one layer
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.
I was really hoping the range around 50-60 how could I do this
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable :cps2000:

SSCBen
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Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by SSCBen » Mon May 30, 2022 8:50 pm

Zman wrote:
Mon May 30, 2022 8:17 pm
I was really hoping the range around 50-60 how could I do this
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.

Zman
Posts: 43
Joined: Wed May 18, 2022 10:22 am
Location: Anderson Missouri

Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Mon May 30, 2022 8:55 pm

SSCBen wrote:
Mon May 30, 2022 8:50 pm
Zman wrote:
Mon May 30, 2022 8:17 pm
I was really hoping the range around 50-60 how could I do this
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.
What do you mean by flow system

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 :cps2000:

SSCBen
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Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by SSCBen » Mon May 30, 2022 10:01 pm

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.

Zman
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Location: Anderson Missouri

Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Tue May 31, 2022 11:42 am

SSCBen wrote:
Mon May 30, 2022 10:01 pm
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.
What size of tubing would you suggest
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable :cps2000:

SSCBen
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Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by SSCBen » Tue May 31, 2022 12:56 pm

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.

Zman
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Joined: Wed May 18, 2022 10:22 am
Location: Anderson Missouri

Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Tue May 31, 2022 2:36 pm

SSCBen wrote:
Tue May 31, 2022 12:56 pm
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.
Original tubing is 1/4 internal diameter

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 :cps2000:

Zman
Posts: 43
Joined: Wed May 18, 2022 10:22 am
Location: Anderson Missouri

Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Mon Jul 04, 2022 1:06 pm

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
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable :cps2000:

Drenchenator
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Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Drenchenator » Tue Jul 05, 2022 7:19 am

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.
The Drenchenator, also known as Lt. Col. Drench

Zman
Posts: 43
Joined: Wed May 18, 2022 10:22 am
Location: Anderson Missouri

Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Tue Jul 05, 2022 1:04 pm

Drenchenator wrote:
Tue Jul 05, 2022 7:19 am
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.
have you had any problems with your LRT bursting
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable :cps2000:

SSCBen
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Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by SSCBen » Wed Jul 06, 2022 8:35 pm

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.

Drenchenator
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Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Drenchenator » Thu Jul 07, 2022 7:29 am

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.
The Drenchenator, also known as Lt. Col. Drench

Zman
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Location: Anderson Missouri

Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Thu Jul 07, 2022 11:41 am

@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
Just because you have a super soaker CPS 2000 doesn’t mean you’re undefeatable :cps2000:

SSCBen
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Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by SSCBen » Thu Jul 07, 2022 7:06 pm

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.

Zman
Posts: 43
Joined: Wed May 18, 2022 10:22 am
Location: Anderson Missouri

Re: Semi homemade CPS with pieces from a XSHOT blaster

Post by Zman » Fri Jul 08, 2022 1:57 pm

SSCBen wrote:
Thu Jul 07, 2022 7:06 pm
.
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.
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 :cps2000:

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