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low range and fps with vortex gun

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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Unread postAuthor: Kenny_McCormic » Sat Mar 17, 2007 1:06 pm

Tusken Raider wrote:Yeah the reservoir is being changed out to only 10 inches long this coming week. I just need to get off my butt to do it :)

thats probably your problem if the bb reservoir is too big then its internal pressure will go down causing the bbs to go slower.
We need Pics!
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Unread postAuthor: Tusken Raider » Sat Mar 17, 2007 1:27 pm

pics. I do not know how to get them all in one post so they are in several
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Unread postAuthor: Tusken Raider » Sat Mar 17, 2007 1:28 pm

pic 2 vortex block
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Unread postAuthor: Tusken Raider » Sat Mar 17, 2007 1:29 pm

pic 3 vortex off angle
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Unread postAuthor: Tusken Raider » Sat Mar 17, 2007 1:39 pm

To sum up the details of the vortex block:
1. Length is about 4 inches back to front
2. Diameter is just under 1.5 inches
3. Vortex hole is 3/4 inch
4. Block is sealed with O ring.
5. Front of block is tapered down to 1/2 inch for side feeding of bbs.
6. skirt was tried but caused misfeeding.
7. Inside of block is grooved for bbs to follow during firing, from the air inlet port to barrel. Front of block is not grooved.


The front block is much the same, only it allows the barrel to go through with a very very tight fit. Front block is also sealed with O ring.

Build Material: Delrin

Overall length of PVC tube is 18 inches.
Diameter or PVC tube: 1.5 inch pipe sch 40
Pressure rating 400 psi

Barrel: aluminum, 24 inches

In pic 1. The vortex block is at the right side of the pic in the rear of the tube. The PVC sticking out to the top on the left side of the tube is the bb loading port, sealed by a cap.

The electrical tape is holding PVC scrap to allow the gun to be tight fitted into another pvc pipe.


With all of that being said, would a half block work better? I am also getting the impression that the brake line or copper tubing will yield better performance.

A cloud might me easier to build, but I like a challenge.
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