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Delay Burst Disk Grenade Design - New Pics

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: Davidvaini » Mon Dec 15, 2008 2:57 am

UPDATE:

Image

Image

It's not finished yet.. though it looks like it is.

The tire valve is in and I've been testing it.. I've gotten it to work a few times with about a 5 second delay.

Now the problem.. The cap used to push the foil tape on isnt long enough and im not getting a good seal with the foil tape. I need to make it a little longer.

I'm going to be painting it soon, It's just the weather here in Wisconsin kinda stinks right now.
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Unread postAuthor: Lentamentalisk » Mon Dec 15, 2008 3:19 am

That looks incredibly clean! Nice work.
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Unread postAuthor: Davidvaini » Mon Dec 15, 2008 1:25 pm

thanks, I just realized im out of the color paint I wanted to use.. I'll have to run up to the store sometime and buy some.
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Unread postAuthor: Davidvaini » Thu Jan 01, 2009 4:01 pm

hey guys, guess what! I painted it OD green. The cap needs to be re-done though.. So I will be uploading some pics soon!
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Unread postAuthor: ShadowKat » Wed Feb 25, 2009 3:28 pm

Any updates on this one?
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Unread postAuthor: Davidvaini » Wed Feb 25, 2009 7:51 pm

Yes new update will come shortly, I have to rebuild a new cap end for it because the old one is no good.


Once I rebuild a new one and paint it, I will shoot some video of it going off.. The project was temporally on hold for a short time.
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Unread postAuthor: Hubb » Wed May 27, 2009 4:16 pm

Any updates?
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Unread postAuthor: SEAKING9006 » Wed Jun 03, 2009 5:41 pm

Hey guys, I have an announcement! Can you guys guess what I'm doing next week?

I'mma gonna be goin' ta colledge and buildin' NADES!

I just got back from Home Depot after an early release school day (second to last!) and I got most of the parts I'll need to build two grenades. The first will be the regular fill-it-and-throw variety, but the other, will be a PRE-CHARGED TRIGGERED GRENADE.

I figured out a way to pre charge one of these and trigger it to start filling the burst chamber WITHOUT a complex mechanism. I'm not telling you guys exactly WHAT it is until it's done, because I don't want any of you bastards taking my idea and doing it before I get my hands on some schraeder valves! (And with a rethink I just had, the triggered nade might not even need a schraeder.)

By the way David, did you actually get the coupling to fit inside the bushing? I'm curious as to exactly what you did there, since your diagram shows a bushing with a coupling fit through it. I have an idea how to do it without putting it all the way through, but that might leave a weak joint and it would be difficult to solvent weld it at a specific depth.
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Unread postAuthor: gunzz » Fri Jun 05, 2009 12:12 am

use 2 burst disks at either end of a pipe. put the flour between them. i do it all the time for things like water,flour,TP,etc.
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Unread postAuthor: SEAKING9006 » Mon Jun 08, 2009 8:31 am

Well, It's 8:30 and I'm here at Home Depot posting from my good old BB. I'm trying to remember where the 1/16 in rubber is. Looks like I'm using a secondary cap design, since David didn't post in time.
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