Special Ops Paintball: Adjusting the velocity on a Nelson style pump - Special Ops Paintball

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Adjusting the velocity on a Nelson style pump (radar mark 2000) Rate Topic: -----

#1 User is offline   gregor 

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Posted 30 October 2009 - 04:39 AM

This is an amazing marker, i just can't adjust it. It shoots under 200 fps right now and I want more so I can bring the pain. I have no idea how to adjust I tried looking for something but found nothing.

This is a pic from vintagerex.com

Posted Image

any help with this is appreciated(even flaming) thanks

Gregor
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for everything You have brought me through.



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#2 User is offline   CB103 

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Posted 30 October 2009 - 08:02 AM

If it doesn't have an external VA, you'll have to mess around with your mainspring until it shoots right.
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#3 User is offline   Droop 

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Posted 30 October 2009 - 10:12 AM

more pressure into your valve?
shim your spring to make it tighter. more pressure.
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#4 User is offline   CamoDeafie 

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Posted 30 October 2009 - 10:54 AM

take it apart. if you can see something like a "tail": on the bolt, and see a hex shaped hole in the front of the bolt, then its adjustable bolt...other possibilities would be a Line SI adjustable hammer/bolt kit, but most likely you have the stock bolt/hammer, which would require changing springs, possibly changing powertubes, and if you're lucky, getting a heavy brass hammer from www.mcarterbrown.com/forums/ members, who MAY have an extra set floating around....looks like you have a bore drop system (longer bolt than a phantom's)....you could also check out air soldier products (do a google search, i cant remember website off my head) and see if you can get a different power tube that's higher flowing, and would enable you to tune your pump just right...most likely you have a very narrow inner diameter power tube, weak main spring, un-adjustable bolt and hammer combination.
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#5 User is offline   splatterpunx 

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Posted 30 October 2009 - 10:41 PM

as far as i know the radar has an adjustable bolt

remove the barrel,look directly at the face of the bolt you will see a hex shaped inlet,find the appropriate allen key and turn clockwise. over adjusting either direction can cause kinking.if you still cant get enough velocity,simply switch to a stiffer mainspring.

now there are much more advanced tuning methods if you want to get into that there are piles of articles on MCB about nelson performance.
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#6 User is offline   gregor 

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Posted 03 November 2009 - 06:52 AM

Thanks everyone, I have saved the instructions you have given and will try them out maybe friday. I am also going to chech out mcb for more info too, Thanks again
to the lord i sing praise and give all credit
for everything You have brought me through.



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