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With PVC Pipe Catch Ring Design

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#26 SgNerf

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Posted 28 November 2010 - 01:18 AM

It might just be my eyes but looks a little long and.. unwieldly. Is it very confortable to fire, shoot, and cock?

Well, i'm 6ft tall so i can still handle that blaster length quite comfortably.

As ice mentioned, users can easily customize the plunger tube lengths/diameters and draws to fit their own preferences.

Edited by SgNerf, 28 November 2010 - 08:44 AM.

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#27 ice

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Posted 28 November 2010 - 01:06 PM

Quite a fun thing to build really. Lots of tweaking, but nothing was frustrating. Im quite satisfied.

Posted Image

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I still don't have a spring long enough for it, but everything works flawlessly, and dart fly out of the barrel by simply hand pushing the plunger forward. The plunger tube is 1 1/2" and 8 inches long, so it puts out a large volume without being to unwieldy, which also let me move the stock in a bit. The main Tee is 1" instead of 20mm, because I don't have access to mm pvc (as most of us in the us). I substituted sanded out 3/4" for the catch plate and plunger guides, works great. Nice design, thanks SG.
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#28 SgNerf

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Posted 29 November 2010 - 09:14 AM

Very nice build!

That reminds me, i should get started on some fresh paintwork on my blasters too. :)
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#29 burning-ice

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Posted 08 December 2010 - 06:40 PM

What is the OD of the plunger rod for you SG?
What is the OD of yours (plunger rod) ice?
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#30 utahnerf

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Posted 08 December 2010 - 09:00 PM

I know Ice used a 1/2" pvc plunger rod, which is why he is in need of a spring, because [k26] and [k25] springs won't nest over 1/2" pvc.

Edited by utahnerf, 08 December 2010 - 09:00 PM.

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#31 shardbearer

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Posted 08 December 2010 - 09:35 PM

1/2 PVC is a horrible plunger rod, for that reason. Look here.
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#32 SgNerf

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Posted 09 December 2010 - 08:14 AM

What is the OD of the plunger rod for you SG?
What is the OD of yours (plunger rod) ice?

The OD of the "13mm spec" PVC pipe plunger rods i use is around 18mm.

The aftermarket springs i use have a 25mm ID so they have the sufficient amount of clearance to fit those PVC pipe plunger rods.
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#33 Draconis

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Posted 09 December 2010 - 02:08 PM

I know Ice used a 1/2" pvc plunger rod, which is why he is in need of a spring, because [k26] and [k25] springs won't nest over 1/2" pvc.


ORLY? Check the specs on the [k25], the ID is 0.952", plenty of space to use 1/2" PVC pipe.

1/2 PVC is a horrible plunger rod, for that reason. Look here.


It's a little heavy, but really could be worse. And that thread is an awful cesspool of misinformation dumplings slathered in a gravy of bad ideas. I mean, copper? Bullshit, you are not going to find 5' for $5. Come on people... PLASTIC.

What is the OD of the plunger rod for you SG?
What is the OD of yours (plunger rod) ice?

The OD of the "13mm spec" PVC pipe plunger rods i use is around 18mm.

The aftermarket springs i use have a 25mm ID so they have the sufficient amount of clearance to fit those PVC pipe plunger rods.


That is weird, man. Our two sizes of 1/2" are CPVC with and ID of 11-13mm and OD of 15.9-16mm, or PVC with and ID of anywhere from 13-18mm and OD of 21.5mm. Stupid imperial measurements and a ridiculous pipe sizing system designed to keep plumbing knowledge exclusive to professional plumbers combine to make it difficult to locate the sizes you use.
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#34 Daniel Beaver

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Posted 09 December 2010 - 02:25 PM

ORLY? Check the specs on the [k25], the ID is 0.952", plenty of space to use 1/2" PVC pipe.

Bullshit.

EDIT: That was trollish of me. The spec sheet at Mcmaster suggest that they fit, but give it a try and you'll see that they don't.

Edited by Daniel Beaver, 09 December 2010 - 04:08 PM.

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#35 shardbearer

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Posted 09 December 2010 - 02:31 PM

Yep, the ID of the [k25] is .808. The OD of 1/2 PVC is .84
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#36 SgNerf

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Posted 09 December 2010 - 03:12 PM

Perhaps you guys should try visiting the industrial spring manufacturers around your areas and check out their existing range of compression springs... just an example, the spring manufacturers i source my springs from in SG have more than 8,000 different springs sizes and specs available in their inventory, i go bonkers just going through their selections.

Focus on finding the industrial spring manufacturers (not just retailers or distributors), 'cos they would be able to custom make springs to your specifications too.

Once you have found local manufacturing sources for aftermarket springs, it'll be much easier to get the exact springs to match your projects.
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#37 acseazzu

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Posted 09 December 2010 - 04:09 PM

Could anyone make a write-up? It would be nice to see how you guys do it....
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#38 shardbearer

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Posted 09 December 2010 - 04:18 PM

Here ya go.
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#39 acseazzu

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Posted 09 December 2010 - 04:20 PM

Here ya go.


Thank you very much!
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#40 acseazzu

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Posted 09 December 2010 - 04:27 PM

Where did you get the supplies? And what spring for the actual gun? Full write-up? Anyone else?

Edited by acseazzu, 09 December 2010 - 04:30 PM.

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#41 lionhawk

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Posted 09 December 2010 - 04:28 PM

Where did you get the supplies?

I would assume either the internet or a hardware store.
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#42 acseazzu

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Posted 09 December 2010 - 04:38 PM

Where did you get the supplies?

I would assume either the internet or a hardware store.


Specific store.
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#43 burning-ice

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Posted 09 December 2010 - 07:14 PM

Quite a fun thing to build really. Lots of tweaking, but nothing was frustrating. Im quite satisfied.

Posted Image

Posted Image

Posted Image


I still don't have a spring long enough for it, but everything works flawlessly, and dart fly out of the barrel by simply hand pushing the plunger forward. The plunger tube is 1 1/2" and 8 inches long, so it puts out a large volume without being to unwieldy, which also let me move the stock in a bit. The main Tee is 1" instead of 20mm, because I don't have access to mm pvc (as most of us in the us). I substituted sanded out 3/4" for the catch plate and plunger guides, works great. Nice design, thanks SG.

Is that sheet metal I see in second pic? If so, what size? (dimensions)
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#44 utahnerf

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Posted 09 December 2010 - 07:31 PM

I know Ice used a 1/2" pvc plunger rod, which is why he is in need of a spring, because [k26] and [k25] springs won't nest over 1/2" pvc.


ORLY? Check the specs on the [k25], the ID is 0.952", plenty of space to use 1/2" PVC pipe.


Okay, sorry, I just remember my 1/2" PVC not fitting inside of either [k26] or [k25] springs. I don't know why, it fits over only some of my 1/2" PVC, and yes I am using K25s.
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#45 Draconis

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Posted 09 December 2010 - 07:43 PM

ORLY? Check the specs on the [k25], the ID is 0.952", plenty of space to use 1/2" PVC pipe.

Bullshit.

EDIT: That was trollish of me. The spec sheet at Mcmaster suggest that they fit, but give it a try and you'll see that they don't.



I wonder if they just supply a spring that matches the constant, because my K25s fit. Not that I would use the 1/2" PVC for this application, but it does work for me.

Edited by Draconis, 09 December 2010 - 07:43 PM.

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#46 shardbearer

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Posted 09 December 2010 - 08:04 PM

the ID is 0.952.


The spec sheet at Mcmaster suggest that they fit.


What the hell are you guys talking about? The ID is not specified, but the OD is .968 and the wire thickness is .08. .968-.16=.808
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#47 ice

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Posted 09 December 2010 - 09:08 PM

the ID is 0.952.


The spec sheet at Mcmaster suggest that they fit.


What the hell are you guys talking about? The ID is not specified, but the OD is .968 and the wire thickness is .08. .968-.16=.808


This is correct. I bought a k-45, and then didn't even fit.
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<!--quoteo(post=206428:date=Jan 25 2009, 05:17 PM:name=Mukersman)--><div class='quotetop'>QUOTE(Mukersman @ Jan 25 2009, 05:17 PM) View Post</div><div class='quotemain'><!--quotec-->
Turd stefans. When I pulled these out of the pillow case i was just like, what... the... fuck...
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<!--QuoteEnd--></div><!--QuoteEEnd-->

#48 windtex1

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Posted 09 December 2010 - 09:10 PM

the ID is 0.952.


The spec sheet at Mcmaster suggest that they fit.


What the hell are you guys talking about? The ID is not specified, but the OD is .968 and the wire thickness is .08. .968-.16=.808


This is correct. I bought a k-45, and then didn't even fit.

A k45 theoretically doesn't even fit over 1/2 cpvc let alone pvc.
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#49 ice

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Posted 09 December 2010 - 09:36 PM

A k45 theoretically doesn't even fit over 1/2 cpvc let alone pvc.

It fits very loosely over CPVC. I don't care about theories, I own it, and it works great on 1/2 cpvc. It's OD is 1" with .092" wire diameter.
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<!--quoteo(post=206428:date=Jan 25 2009, 05:17 PM:name=Mukersman)--><div class='quotetop'>QUOTE(Mukersman @ Jan 25 2009, 05:17 PM) View Post</div><div class='quotemain'><!--quotec-->
Turd stefans. When I pulled these out of the pillow case i was just like, what... the... fuck...
Muker
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#50 TxNerfer

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Posted 09 December 2010 - 10:06 PM

Instead of finding a single spring that would be long enough, you could find 2 or 3 shorter ones and put washers in between the springs like Carbon did on the Snap-1....it doesn't have to be a continuous spring.
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