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Elite plungertube draw increase


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#1 Darthrambo

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Posted 29 August 2012 - 01:44 AM

This mod eliminates dead space in the plunger tube for elites, but more importnatly turns that dead space into draw length for more power
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You can see where the plungerhead naturally rests stock in this pic, everything to the left of the black of the O-ring you can vaguely see is dead space.

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This is what the plunger tube looks like after this mod

Step 1 Remove the plunger rod
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If you pull the head out at an angle you don't need to remove the orange ring.

Step 2
Grind down the grind down the ridge that prevents the plunger from moving all the way down the tube. It's where the plunger head is stopped in the first pic on the inside of the tube (no pic, anything I tried to take just looked all white)
Use a round utility bit

Step 3
Slightly file down the front lip of the plunger head at an angle so that it feeds easily into the ridge you just ground down allowing the head to travel the full length of the tube.
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Step 4
Add some hot glue to the back of the plunger head so that the spring will push the whole length of the tube, and to add some pre-load
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Note that there is very little room for the spring to compress into and still have the catch engage keep this in mind.
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NOTE:I didn't bother to mention mods for the retaliators that I've seen write ups on even I did them a little differently. Also not that the pics are of a clear recon and so some of the way things are shown in the pics may be slightly different for a retaliator or rampage shell. (specifically the glue on the back of the head)

If you want to see the other mods or how to get the retaliator internals into a recon I have it posted here http://nerfmodsandnews.blogspot.com/

Edited by Darthrambo, 29 August 2012 - 12:06 PM.

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#2 Paddyb98

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Posted 29 August 2012 - 09:05 AM

Nice Writeup, and this mod looks really cool. However, wouldn't you have to sand down the ridge perfectly so you don't screw up your seal? If you sanded too much I would imagine you could lose air. Good job though.
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Dammit Jim!

#3 nine

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Posted 29 August 2012 - 10:17 AM

Wouldn't you need to redo the breech for this to actually be effective? The dart would have left the stock barrel by the time the draw extension becomes useful. Good work on the mod though, for it seems like it would be useful for a breeched retaliator.
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#4 Darthrambo

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Posted 29 August 2012 - 12:40 PM

Wouldn't you need to redo the breech for this to actually be effective? The dart would have left the stock barrel by the time the draw extension becomes useful. Good work on the mod though, for it seems like it would be useful for a breeched retaliator.

No, it increases range without a sealed breech. I really don't know the physics behind it but the results are better ranges. I guess if you considers that the air is being delivered faster without the AR and because the spring now has more pre-load it can be explained that way.
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#5 nine

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Posted 29 August 2012 - 01:42 PM

No, it increases range without a sealed breech. I really don't know the physics behind it but the results are better ranges. I guess if you considers that the air is being delivered faster without the AR and because the spring now has more pre-load it can be explained that way.


I was just talking about the draw extension mod specifically, not including the other mods you did. I will concede that removing the air restrictor and increasing pre compression will increase range without a breech. Be careful with pre compression though, for too much can ruin a spring.
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#6 nine

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Posted 29 August 2012 - 01:42 PM

Sorry, weird server error caused double post.

Edited by nine, 29 August 2012 - 01:44 PM.

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#7 Darthrambo

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Posted 29 August 2012 - 02:18 PM

No what I'm saying is that:

-Without the ARs the air can leave the tube faster thus using the full volume of the tube before the dart leaves the breech.

-The pre-load on the spring also increases the speed of the plunger rod thus allowing it use the full volume of the tube before the dart leave the breech.

Think about it like this, A longshot has a massive tube, but the dart tooth only pushes the dart into the barrel the same distance as any other CS blaster. By your logic the plunger tube size of the longshot is a waste because the dart would leave the breech before the the full volume of the tube was used.
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#8 lech

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Posted 29 August 2012 - 11:02 PM

I doubt that hotglue will last long.


So there was a ridge inside the plunger tube which you sand down?
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#9 Apollo441

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Posted 30 August 2012 - 04:28 AM

I thought that ridge was like a buffer, to elimiate the need for plunger padding, yes it would extend the draw but it could shorten the life of the pt.
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#10 Darthrambo

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Posted 30 August 2012 - 10:38 AM

I thought that ridge was like a buffer, to elimiate the need for plunger padding, yes it would extend the draw but it could shorten the life of the pt.


The ridge acts as a buffer because the O-ring hits the ridge instead of the plunger head. The way I have it I hear a thud rather than a crack when dry firing It shouldn't have much of an impact on the life of the tube from what I can tell
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