December 6, 2013

Captain America Stealthfire Shield Internals

As promised; an update on the CA shield: it works exactly as I thought.
THE BLASTER IS A SERIES OF TUBES.
The rear handle operates a large gear mechanism that pops the shield into firing position, and a Snapfire type plunger assembly is used to propel the darts.
Tiny plunger stroke, but wide tube.
The trigger also operates a 5-pronged rotation gear, which alternates air flow between the two tubes (which then uses the air restrictors to select the firing barrel, like a Rough Cut or Triad). The fifth gear pushes a tab on the gear system, releasing the stored potential energy to fold everything back into the normal shield shape.
Note that extra plastic on the rotation gear.
Obvious experiments include a stronger extension spring for the plunger assembly - unlike the Snapfire, you're using all four fingers to pull the trigger, allowing more force to be applied without your fingers tiring out. Efforts to shorten the tubing may also be of interest. In the end, though, I'm still afraid that complete replacement of the internals is required to make this shield really useful in a Nerf War.

8 comments:

  1. What kind of volume is there inside? I'm wondering what kind of air tank can be put inside.

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  3. My son broke his shield, the shooting tubes are not retracting anymore after the 4 shots, do you have any idea on how I can fix it?

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    1. Dr. Muck Open the nerf shield to see if the two gears attached to the air tubes have jammed. The inside white plastic part can become unaligned if forced, and may need to be re-aligned.

      If that's not the problem, then it's probably the springs that move those two gears. Push the handle forward until you can unhook it so that only the large central spring is holding it on. Unscrew the housings for each of the gears. The large flat gear inside needs to be aligned with a small spring underneath it. It takes some trial and error, but you need to hook the spring and dial the gear around so it sits with some tension.

      While holding the gear in place, re-screw on the housing and test if moving the gear moves the other gears as well. Do the same to the other side and it should work. Make sure to be gentle when shoving the handle back into its housing. Being too rough can unalign those small springs again.

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  5. Hello! My nephew's shield has one set of shooting tubes unaligned when open (some kid played with it unattended and might have forced it). Is there a way to fix it? Thank you in advance.

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