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Knex concepts: BB Magazine

Okay, now quite a while ago I discovered, whilst mucking around with my Knex M4, that my BB's (the little round pellets fired out of airsoft guns) fitted perfectly in the holes of connectors! So after some initial brainstorming i decided how to make a normal mag that holds BB pellets instead of rods...But trust me, it's harder than it looks.

Now I know that there are Knex guns that fire BB's but my aim is for someone to make a great detachable mag that fits an assault rifle (like an M4 or G36 mag, you know the normal ones, not a horizontal mag or anything like that...) that works really well and shoots one BB at a time...

I took some pictures of my design so after I broke it up I could go back and remake it a later time (when I was better at Knex mechanisms) and finish what I started. I am asking the Knex community to help me by finishing it!!!

Good Luck!

-Cazadactle

12 comments

May 14, 2012. 10:05 AMGhostFacedKillah says:

I have tried this before with no sucess.The bb's keep falling out.

Dec 13, 2011. 9:57 PMSenior Waffleman says:

With the spherical shape, the force will push it out the side without getting a chance to actually load

Dec 14, 2011. 8:16 AMcazadactle (author) says:

i depends on how the bullet is received into the chamber. I found a way using two white cons connected by three white rods with a tan clip on each facing inward. Much like the loading mech of this (http://www.instructables.com/id/K-nex-pump-action-rifle-code%3AOSNJCKMA2/) but just a lot shorter...

Nov 14, 2011. 8:10 AMapples!!!!! says:

Here's the problem with BB's being fired from a K'nex layout(your magazine is not what I'm criticizing, you did well with it):

It's horribly inefficient. BB's are pretty inefficient in airsoft weapons and that's the best it goes. If you could format this to work with a slingshot then it could theoretically be useful but trust me, smacking that practically non-existent, tiny sphere of plastic with a ram is going to give it literally no force and it'll go like fifteen feet before randomly dipping in some awkward direction. It could work, but it would never, NEVER, be transferring energy through that BB properly.

Nov 14, 2011. 6:55 PMOblivitus says:

It actually gets decent range if you use the firing rod like a slingshot- that is, when the rod is cocked the bb should be directly in front of it and it pushes the round out the barrel. I never tested it outdoors, but I got one such design to hit a wall 15 feet away with a loud pang.

Nov 17, 2011. 5:31 PMapples!!!!! says:

That may work fairly well, yes. Slingshots work pretty well with BBs, as I first said. My point was more that ram + BB = fail 95% of the time.

Nov 18, 2011. 2:00 PMOblivitus says:

Yeah, however, it's not the ram, it's striking a bb that produces low range. I can see you understand that, but to say that "ram + BB = fail 95% of the time" is not accurate, so to reword that for you; depending on how you use the ram, it's either succeed 100% of the time or fail 100% of the time. The usual method for firing a ram gun is indeed a 100% fail.

Nov 20, 2011. 7:50 AMapples!!!!! says:

I meant that 95% of the ram methods would fail. I'm awful with wording sometimes, I apologize.

Nov 20, 2011. 8:50 AMOblivitus says:

No need to apologize. It's cool. Wording is a work in a progress for all of us. The only thing that matters is that you're improving at it. It's important to be able to convey our thoughts accurately. But you seem to have already known that. :)

Nov 20, 2011. 3:27 PMapples!!!!! says:

Yup! Things make more sense in my head than they do in writing when it comes to concepts. I've also been rather tired for a while now...

Nov 14, 2011. 6:28 PMcazadactle (author) says:

Maybe with the different points the ram strikes the BB (say at the very tip of the ram were the power is at its strongest) and given you had a low friction yet straight and long barrel I reckon it would be possible to create a Knex Airsoft gun.
But remeber this is for other Knex builders to have a go at, it would be interesting to see what people come up with...

Nov 17, 2011. 5:24 PMapples!!!!! says:

As I said, it may work alright for a K'nex gun but it will never match an airsoft weapon. The BB is too light for that kind of energy transfer.