Author Topic: 40mm Foam Rockets  (Read 1333 times)

Offline Dayton

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40mm Foam Rockets
« on: June 15, 2013, 09:17:35 PM »
Hold on to your panties lady's and gents. What I'm about to show you is a project I have been working on for years, and have finally come to a near finishing point.

You may or may not be interested in this. But there are a few of you out there that I know will be. :)

I am showcasing the rockets, not the launcher. The launcher will be my new AT-4, but for now, its just the guts.
These rockets are designed to fit a 1.5" or 40mm tube. (under-barrel launcher anybody?) I originally was going to make a 50mm version as well, and may still do that, but the 40mm versions fly so well, and are much more efficient then the 50's, that I have no reason to make the 50mm ones. I would rather convert all my stuff to use the 40mm rockets. But, if there is enough request for a 50mm variant down the road, maybe I'll re-open that possibility. We'll see.

*Duct-taped a set of 25mm scope rings to the pipe, stuck a quick 3d printed reticule inside one of the rings, helped with aiming immensely.

These 4 shots/videos below;
The first two are with the first edition of my rockets with a fairly flimsy tail. (v1)
The second two are with the second edition of rockets. Modified tail to be much sturdier. (v2)

All shots made at about 100 psi, with a slight eastward wind (shooting direction was North-East).

V1 Rockets, 2/4 fins have twist, tail section somewhat flimsy.

V1 Test 1: ~350ft rest (after bounce)
https://www.youtube.com/watch?v=_5pSWHlFA4Q


V1 Test 2: ~380ft rest (after bounce)
https://www.youtube.com/watch?v=w8NgCkp2rlc

V1: Rockets resting position was about 10ft apart side to side, and about 30ft apart range wise.






V2 Rockets, 4/4 fins have twist, tail section sturdy.

V2 Test 1: ~364ft rest (after bounce)
https://www.youtube.com/watch?v=fj10pAN-IBA


v2 Test 2: ~364ft rest (after bounce)
https://www.youtube.com/watch?v=yYR4-emqsQU

V2: Rockets resting position was about 6ft apart side to side, and equal range.


Very exciting! 100% satisfied with the rocket design.

Next test will be impact/damage tests, using my launcher, under-barrel green gas launcher, and under-barrel co2 launcher. Starting with cardboard, then moving on to armored human subjects. (helmet, goggles, plate carrier, heavy pants/shirt. Then if goes well, un-armored humans)

After all this, I'll start production. No ETA or estimated cost yet.

What do you guys think?


(This pic makes the two version look different sized, they are the same size)
« Last Edit: June 15, 2013, 10:02:54 PM by Dayton »
Fox Company | Tournament Locks
Main: JP Polarstar, Magpul PTS ACR, ARES Tavor TAR-21
Side Arm: KWA HK45, KWA Umarex H&K MP7
Other: AT-4, Defusable Bomb, Mortar

Offline Old Dog

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Re: 40mm Foam Rockets
« Reply #1 on: June 15, 2013, 09:51:20 PM »
Comment 1.  kewl :)
Comment 2.  Really kewl :)
Comment 3.  Looks like about the most fun one can have with clothes on :)

GREAT JOB Dayton :)
I am just a chalk line on the sidewalk waiting for the next rain to wash me off...
For the time I am here I am what I am...

Offline Exarach

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Re: 40mm Foam Rockets
« Reply #2 on: June 15, 2013, 11:37:07 PM »
These work great! Build more! Same ones I bought?
\"Friendly fire isn\'t\"
If a speeding pellet in a quiet woods hits a noob in the face, and he cries, does anyone care?

Offline Dayton

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Re: 40mm Foam Rockets
« Reply #3 on: June 16, 2013, 07:11:13 AM »
Nope, these are actually redesigned and better than the ones you bought. :)

These ones are 40mm (1.5").
Fox Company | Tournament Locks
Main: JP Polarstar, Magpul PTS ACR, ARES Tavor TAR-21
Side Arm: KWA HK45, KWA Umarex H&K MP7
Other: AT-4, Defusable Bomb, Mortar