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Thunder B Grenades

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Thunder B Grenades

Post by Twitch on May 7th 2011, 23:11

Review of Thunder B Grenades

Thunder B grenades are simulation "flash bang" style grenades that are powered by a 12 gram CO2 cartridge. The CO2 fills a plastic canister until it bursts causing a loud bang. It is comparable to the sound of a 12 gauge shotgun blast.

You can buy these in smaller 3 packs, or larger 12 packs. The shells can only be used one time each, but are fairly cheap to replace, generally about $1.50 each. They come in two styles, canister and pineapple grenade. The pineapple grenade style are not as loud, but still impressive.

As I explained these are powered by filling with CO2. These are triggered by a spring powered hammer being held in place by the spoon and a pin. When the pin is pulled and you release the spoon, a hammer slams onto a sharp pin which punctures the CO2 cartridge. At that point you have about 4 seconds until it bursts.

After a canister has burst, you unscrew the core piece of the grenade, re-prime it by resetting the hammer, spoon and pin, install a new CO2 cartridge, and screw on a new canister and you are good to go.

As far as these grenades go, they are cheap to start out with (core & 12 shells) is $35. They are cheap to continue using, as the shells are not much to replace. I will caution you not to put powder or any other substance inside these as it gums them up and then they leak air and will not explode. Oh yeah, and they are pretty darn loud and good attention getters.

The Thunder B cores I have are a few years old but still work. I recently replaced the seals in the core after they were failing to blow and they are now working like new. They are slightly larger than CTS flash bangs, so they are a tight fit in a pouch designed to hold real flash bangs.
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Re: Thunder B Grenades

Post by Coyote on May 7th 2011, 23:29

Great review. I saw a video online about these things and they do look pretty cool.

Is the timing between releasin the spoon to detonation consistently 4 seconds or is there noticeable variance? How about cold weather functioning?
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Re: Thunder B Grenades

Post by Twitch on May 7th 2011, 23:38

I would say consistently between 3 and 5 seconds. They work just fine in cold weather. I have blown these things off during the snow and they work just fine. The CO2 cartridges are under about 850 PSI, so when thats punctured it fills the canister pretty darn fast.
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Re: Thunder B Grenades

Post by Meatcake on May 12th 2011, 13:56

If it really is as loud as a 12 going off, I'm going to start to have to wear earplugs to airsoft. Irony!

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Re: Thunder B Grenades

Post by Twitch on May 12th 2011, 20:10

@shiftycat wrote:@ twitch, do you have a link where i can buy some for a decent price? i want to take some for MOUT at oklahoma

They are priced pretty equally, some of the Chinese sites have them for a few dollars cheaper, but shipping from China gets crazy expensive and takes 2-3 weeks for shipping.

I would say your best bet is to go through:
www.evike.com

They have a coupon code: "evikerock04" that gives 14% off.
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