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Old 11-05-2017, 08:45 AM   #1 (permalink)
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Nelson Valve Question

Is it possible to use another cup seal body as a valve spacer? Just put the second cup seal on the other end of the spring to compress the valve spring.
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Old 11-05-2017, 09:59 AM   #2 (permalink)
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Probably.

My local hardware store sells nylon spacers that have a hole down the center that I use when I want to devolumize the valve. They are cheap and you can cut them to adjust the space they take up.
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Stock class = 12grams and a stick feed. End discussion.
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Old 11-05-2017, 01:41 PM   #3 (permalink)
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Originally Posted by Juice9869 View Post
Is it possible to use another cup seal body as a valve spacer? Just put the second cup seal on the other end of the spring to compress the valve spring.
An additional seal will lead to wear and possibly alignment problems. I have tried adding an additional cup seal as you described and the soft cup seal just ending up getting chopped up and stuck in the moving parts. While it was initially successful, it was ultimately a failure.

Adding washers in between the back of the spring and the valve body may be a more effective and inexpensive solution. Stiffer springs is a superior and not costly solution if you can find the right size/stiffness springs at the hardware store or an autococker set. Trimming them down requires a bit of brinksmanship, but it is not impossible to achieve a custom set up with trimmed or shimmed springs.
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Old 11-07-2017, 12:20 AM   #4 (permalink)
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The best route would be to find a spring that works as Legolas mentioned or to grab one of RTR's long spring guides.

https://remembertheronin.com/spring-guides/

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Old 11-07-2017, 07:25 AM   #5 (permalink)
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The RTR Long spring guide will likely not fit in most any other Nelson valve.

Juice. What is the goal? Are you just trying to preload the spring or are you trying to de-volumize the valve?

I'm guessing by your question you are talking about adding the brass cup, not the seal it's self, backwards in the back of the valve. If I'm guessing right and you have an extra one on hand I will say this much. You aren't going to hurt anything in trying it. It will compress the spring to add tension and it will decrease the CO2 taken to fill the valve. I don't know how well it will work as there are a lot of unknowns here and a lot of differing opinions on how to tune Nelsons.

Other options I could suggest are the Nylon spacers that I mentioned before, CCI or Autococker spring kits, but with just the information you provided those are my suggestions.
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Since this thread started with boobs what are we supposed to derail it with?
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Someone ban that painthappy dude
Stock class = 12grams and a stick feed. End discussion.

Last edited by Greenmtnphantom; 11-07-2017 at 09:10 AM.
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Old 11-07-2017, 08:56 AM   #6 (permalink)
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The best route would be to find a spring that works as Legolas mentioned or to grab one of RTR's long spring guides.

Spring Guides - Remember The Ronin | Custom Paintball Products

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I just picked up an RTR valve body to try those guides on my phantom.
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Old 11-07-2017, 09:13 AM   #7 (permalink)
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The short guides should work fine for most.

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Old 11-07-2017, 11:28 AM   #8 (permalink)
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Not even sure you can fit the short spring guide in a phantom valve body and be able to screw in the retainer. Don't think there is room, physically.

Edit: Courtesy of Siress' CAD models showing a phantom valve with a RTR spring guide won't work. Yellow is the spring guide, pink is the RTR valve, orange is phantom valve.


Last edited by Angelballer; 11-07-2017 at 11:44 AM.
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Old 11-07-2017, 01:22 PM   #9 (permalink)
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I must have missed the part where he mentioned he was using it for a phantom valve.

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Old 11-09-2017, 07:07 PM   #10 (permalink)
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Thanks guys, I was hoping to decrease volume in the valve and pre-load the spring to increase efficiency.
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