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The Secretstrike Internals Revealed

a basic diagram of what the nerf secret strike (pocket blaster) intern

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#1 iknowmy3tables

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Posted 02 April 2010 - 04:46 PM

Hey guys, you might have unscrewed the cover of your secretstrike only to find one big piece of plastic wondering what it looks like on the inside.

using the some of the knowledge that I've gained from this forum I figured out enough to carefully start butchering my secretstike for my next project, and now that I'm almost done I have seen enough to know what most of it looks like, so I've drawn several diagram that I hope can be a useful resource for anyone looking to know what the inside of their secretstrike looks like. they go into detail so hopefully anyone can understand even if they don't know about back-pressure valves (aka piston valves).

here's the diagram overlapped with a photo of the internals (taken from the internals directory Courtesy of Gengar003)
Posted Image
here's a link to some other versions
without text
without photo

here's a diagram for how the valve works
Posted Image

and a diagram for how the lower parts work
Posted Image

notice that the check valve uses a rather unique design, the same concept appears to be used in the main valve's piston to prevent the air from the chamber from exiting thought the push button trigger valve. As I have heard that's a major problem in other back-pressure valve foam blasters such as Lanard's sonic bazooka, this piston design would explain why the secretstrike seams to not have those malfunctions

Enjoy

Edited by iknowmy3tables, 26 October 2010 - 07:00 PM.

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#2 nerfer9

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Posted 02 April 2010 - 05:51 PM

Very interesting. That check valve is very weird. I've never seen it used on any other blaster made by Hasbro. What do you use to make your diagrams?

Edited by nerfer9, 02 April 2010 - 05:53 PM.

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#3 Blue

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Posted 02 April 2010 - 05:56 PM

A few of the older secret strike editions have clear internals as well, so you can really see how the piston moves. I like how you laid over the internals on the real thing, it looks great.
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#4 meatballica

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Posted 02 April 2010 - 06:11 PM

About the AR thing. I have found that if you remove the entire peg setup to where you see a black dot (it maybe a different color mine was just black) you will get alot more air to the dart but your going to want really loose darts in your barrel otherwise your going to here a loud pop when you fire and have a slit in your dart. Then again I was using stock darts though.
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#5 nostyleguy

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Posted 02 April 2010 - 06:29 PM

So the pressure of the incoming air into the tank is enough to deflect the 'lips' of the piston so that air can get in but not out? very interesting.

Edited by nostyleguy, 02 April 2010 - 06:31 PM.

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#6 moosa

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Posted 03 April 2010 - 02:28 AM

Very nice. Some things here I've never seen before. Quite interesting. I, for one, appreciate your hard work. :unsure:
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Yes.

#7 Vinnie D

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Posted 04 April 2010 - 02:36 AM

Looks like plugging the valve on it should be incredibly easy. This is a great contribution to the community involving a blaster that pretty much everyone loves. Great job.
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#8 iknowmy3tables

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Posted 04 April 2010 - 01:52 PM

thanks guys glad you like it,
so I was at home this weekend and some problem with my internet prevented me from posting replies, so I'm going to try and respond to several of you at the same time, and it's going to be a bit long

Very interesting. That check valve is very weird. I've never seen it used on any other blaster made by Hasbro. What do you use to make your diagrams?

indeed it is, I don't think I've ever seen it used on anything else ever. I actually use microsoft powerpoint for my diagrams then I copy them to MS paint and save them as image files, I actually became extremely familiar with powerpoint over 8 years ago and since then I've known powerpoint like the back of my hand, I've tried other legit drafting programs but I've never been able to make basic diagrams faster then I have with powerpoint and i do a lot of diagrams when i have to explain things on forums, after all nearly all my diagrams consist almost entirely out of rectangles


About the AR thing. I have found that if you remove the entire peg setup to where you see a black dot (it maybe a different color mine was just black) you will get alot more air to the dart but your going to want really loose darts in your barrel otherwise your going to here a loud pop when you fire and have a slit in your dart. Then again I was using stock darts though.

the black dot that you see should be black for all blasters because it's the rubber sealing face of the piston, and I don't think that Hasbro would bother with using different colored rubber

anyways that's pretty interesting, I never would have imagined that it would do that, I've cut off barrel on my secretstrike and I've seen the base where the rod connects but I don't see why the rod would create that much flow restriction,
however I have theory; perhaps the flow isn't that much greater but instead the rod dissipated the air across the base of the dart, so what you feel is a more focused pulse of air. (The performance of valves are typically based of speed and flow, since the secretstrike has such a small chamber volume and such a short barrel the performance must be strongly based on the valve's speed,) so the air rushing out of that hole at ludicris speed is going directly from the chamber into the hollow cavity of the dart, the rapidity of the pulse being applied directly into the even smaller space inside the dart must the reason why this occurs. May I ask despite these powerful effects how much has the removal of the rod affected the range?

Very nice graphics. I hope you'll do some more. We have threads already going for internals photos and for "autopsy" photos of broken stuff, and a lot of those explanations could benefit from added drawings.

thanks I'd love to do some quick diagrams here and there, let me know if you can think of any particular designs that people have trouble understanding off the top of your head,
edit: actually I can't quite model the valves to be as close to the real thing as I did here unless I have access to the real thing, but with some help I think I could do diagrams for all the common Nerf valves and that should help others figure how their gun works and roughly where the parts are

Edited by iknowmy3tables, 04 April 2010 - 02:48 PM.

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#9 Zorns Lemma

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Posted 04 April 2010 - 06:17 PM

Good shit dude. I can't wait to see what this project is of yours that you dissected everything for.
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#10 flamingeyes245

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Posted 04 April 2010 - 07:40 PM

I have a few that i could dissect later.
On a somewhat related note, my friend just bought one, and the tank seems to be larger, because there is more air output. Newer version in the same shell?
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#11 iknowmy3tables

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Posted 04 April 2010 - 08:13 PM

what are you going to dissect your secret strike for? if you're going to peek inside the push button valve let me know what it looks like so I can make the diagram as accurate as posible
can't be certain that it has a larger chamber until you pop off the case, it could just be a less sensitive relief valve or some aspect of overall quality, but if you get a chance to compare my chamber is 1 inch long.

as for my project I'm taking some pictures as I go so I can give you a sneak peak whoever can guess what I'm trying to do wins a cookie
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#12 iknowmy3tables

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Posted 04 April 2010 - 08:15 PM

deleted
sorry accidentally sent twice

Edited by iknowmy3tables, 04 April 2010 - 09:10 PM.

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