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K'NEX Machine Gun (Does Not Use "Barrel Per Bullet" Design)

How it should (How I want it to) work.

Background: Uses a rack and pinion system to draw back a firing pin to launch projectiles(firing pin not shown).

1. Crank (black rod) will be turned, spinning the pinion, which in turn draws back the rack. First picture shows the racks in default position. They are locked in place against the pinions by the yellow connectors stopping the orange connectors (center).

2. Rubber bands attached to the racks pull them inward, but is stopped by the yellow connectors. Once it reaches the end, the rubber bands pulling the racks will pull them inward suddenly. This will free the racks from the pinions, so turning the crank will not pull back the mechanism any more.

3. Once the racks impacts the front, the force of the impact pushes it against the angled yellow structure, thus resetting the racks into default again.

Basically someone build this so it works well, por favor.

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45 comments
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Jul 4, 2007. 12:52 AMMepain says:
Ahhh okay, I think I get it now! In simplified terms, the pinion's "teeth" (green rods)pull back the rack through it's "teeth" (gray connectors). The yellow connectors keep the rack's teeth and the pinion's teeth touching, so the whole top assembly is pulled back. once those orange connectors clear the yellow connectors, the top assembly goes forward, and then the process repeats. Am I right?
Jul 16, 2008. 12:01 PMCrazyCHRIS!! says:
yeah thats right, although I have made a new full auto design, it does not involve a rack or pinion but a canibalised cog and a hammer. At the moment I'm making a browning m2
Jun 3, 2008. 2:14 AMJames_Lawrence says:
wtf i didnt get a single thing :$
Jul 5, 2008. 6:27 AMMI6 says:
I had the idea of rack and pinion but couldnt make the rack . You have; well done !
Mar 18, 2008. 6:35 PMI_am_Canadian says:
i had some ideas on this that involved using a chain
Jul 1, 2007. 7:53 AMLoosewire; SOE Operative says:
i have been trying to do this but i can only seem to do it by cutting cogs
Nov 15, 2007. 8:14 PMWhaleman says:
well, don't cut cogs, you could just use a cog, then make it so that after a full revolution the cog goes up. You know, like have an orange connector that is somewhat longer than the cog, that way when it gets to that point, the cog goes up, releasing the pin.
Nov 16, 2007. 5:52 PMLoosewire; SOE Operative says:
Mine works but only with 1 band but I didn't gear it.
Nov 16, 2007. 8:15 PMLoosewire; SOE Operative says:
Here it is.
Nov 16, 2007. 9:48 PMWhaleman says:
sweet! looks like a P90! And Why was I notified of this message.......
Nov 17, 2007. 1:05 PMLoosewire; SOE Operative says:
Because: you answered me faust answered you i answered faust faust answered me and i posted the pictures to faust. So the trail of comments stemed from you. I get these all the time from you and mepain chatting.
Nov 17, 2007. 4:58 PMWhaleman says:
cool. Did you get mepain's 1 nanosecond picture? He went to his homepage a nanosecond after I posted a comment.
Nov 18, 2007. 6:44 AMLoosewire; SOE Operative says:
No? Where is it?
Nov 16, 2007. 6:15 PMLoosewire; SOE Operative says:
Well it uses a rack and pinion, it still needs a better magazine and it is weak but the mechanism works.
Nov 16, 2007. 4:06 PMWhaleman says:
Sweet. Do you have a job? I am gonna try and get a job next year.
Nov 16, 2007. 8:17 PMLoosewire; SOE Operative says:
Go to college.
Nov 16, 2007. 9:50 PMWhaleman says:
Not old enough, how old do you have to be to go to college in england? And how old for university? My sister's boy friend just turned 18 a few days ago, and he was in community college, and he is gonna stay there till my sister graduates so they can go to college together. My sister is graduating this year....... I am gonna miss her, but not as much as I like being able to get her room! well, not really, but, whatever
Nov 17, 2007. 1:50 PMLoosewire; SOE Operative says:
16 for college here and I think 18 for university.
Nov 17, 2007. 4:56 PMWhaleman says:
yes, it is generally 18 for college here, but as long as you have your GED, you can go to a community college, which is only two years. If you decide to graduate high school (most people are 18 when they do), you can go to an actual 4 year university (which is the same as a college), and get a diploma, longer if you want a PH.D., and less for a master's degree, i think. There are other types of degrees you can get too, but I don't know them.
Nov 18, 2007. 6:50 AMLoosewire; SOE Operative says:
Most people at my school will get degrees in stupidity, mindlessness and being generally thick.
Nov 18, 2007. 10:07 AMWhaleman says:
That's the degree I'm gonna get! Well, not really, I want to join interpol.
Oct 6, 2007. 2:25 AMMad Cat says:
Well? Is it done?
Jul 3, 2007. 3:55 PMmmzdaniel says:
i have a semi auto gun (true one) that uses this system... it is used in airsofts its nothing new really... but if you already have this, you should make it work with the AST rifle and make it automatic....
Jul 4, 2007. 4:56 AMmmzdaniel says:
my semi auto seems to work very good with no jamming problems... too bad i cannot post it cause I'm going on a long, LONG trip to south America on this Friday.... ill be back after 2 months.
Jul 4, 2007. 1:52 PMmmzdaniel says:
hellz no! it has a mag, 1 firing pin, and some gears..... like is said it works similar to this MG.... only this is semi auto...
Jul 5, 2007. 4:06 AMmmzdaniel says:
i meant yours is auto and mine is semi...
Jul 5, 2007. 4:08 AMmmzdaniel says:
no when you pull the trigger 1 bullet comes our... the full auto is still in work but i cannot give pictures or talk often because like i said, im going on a long trip to south America today, and i will be back after 2 months... until then, i could still talk here trough internet cafe's.
Jul 2, 2007. 1:30 PMDanny says:
Ok dude I'm gonna make this because i don't understand it :D
Jul 2, 2007. 1:24 PMLoosewire; SOE Operative says:
i had loads of problems with that yesterday too
Jul 2, 2007. 1:23 PMLoosewire; SOE Operative says:
yay!! pics work
Jul 2, 2007. 8:10 AMsmidge147 says:
lol very detailed pictures! "carpet fibres" i still dont get the gun youll have to post a vid!.
Jul 1, 2007. 11:26 AMDanny says:
can u post the pics as a seperate comment since they are already in ur libary
Jul 1, 2007. 6:29 AMEasy Button says:
i might beable to figure a way to do that it might of helped if there were pictures

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