SA 3252 V.7

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About: I paint, write music, and used to build knex guns. I have a Bachelor's Degree in Studio Art. - updated 5/7/2014

Intro: SA 3252 V.7

I'm still working on this, but here's the latest.

How this version will work;

This gun is powered by a large elastic that is hand cranked around a spool. The different mechanisms are linked to each other by gears. The blocking mech section of the trigger mech moves at half the rate of speed that the spool and firing mech move. This is because the blocking mech blocks every 180 degree rotation, while the firing mech needs to operate on 360 degree rotations. The gun uses an "alternating" semi-automatic trigger mechanism that unblocks one block mech, while the other remains in a blocked position. This ensures that no matter how slowly you pull the trigger and no matter how fast the firing elastic rotates the mechanism, the trigger will not fail to block the mechanism in exactly one rotation.

I'm still working on this version, but I got good results in previous versions. Upon completion, this will likely fire 6 rounds from a magazine 30 feet semi-automatically before re-cocking. I intend to take this design to the end, not stopping my work on it until it can function no better.

UPDATE: I've begun working on version 8. Turns out 7 had some problems. 8 will still include gears, an alternating trigger mech, and the same firing mech, but I'm totally redesigning the rest of it.

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    83 Discussions

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    OblivitusThe Jamalam

    Reply 7 years ago on Introduction

    Yes, thank you, that's exactly the purpose of this gun. It's about the potential of the design. There are so many applications of this and ways to improve it.

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    DJ RadioGrandeSwag

    Reply 7 years ago on Introduction

    I think he means you just cock it once after loading, then pull the trigger and it shoots like a semi auto. No cocking needed after the first one.

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    OblivitusDJ Radio

    Reply 7 years ago on Introduction

    Right, you wind it up six rotations, then it shoots 6 rounds without rewinding. The process is repeated after every six shots.

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    DJ RadioOblivitus

    Reply 7 years ago on Introduction

    That's not semi-auto then. That's like pumping a shotgun 6 times then firing off 6 shots. You still had to pump once for each shot fired, but just not right after firing.

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    LvNo1000DJ Radio

    Reply 5 years ago on Introduction

    D: there's always so much contravercy on semi-autos that I wouldn't be surprised if someone set a whole site up for discussion about it.

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    OblivitusGrandeSwag

    Reply 7 years ago on Introduction

    It fires 6 rounds in a row, one with each trigger pull. That is semi-automatic fire. Do not insult me.

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    GrandeSwagOblivitus

    Reply 7 years ago on Introduction

    Well if you don't want to be "insulted" make a true semi auto. A true semi auto requires no prep for firing the gun aside from loading ammo. This gun requires winding.

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    muhu1GrandeSwag

    Reply 7 years ago on Introduction

    How about you make one?

    No one has ever invented a true semi automatic, at least not one that fires k'nex pieces or rods.
    Like a real semi-automatic rifle works with electricity or is gas operated.
    How do you expect that someone wil make that out of k'nex.
    at least Oblivitus is trying.

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    KnexFreekmuhu1

    Reply 6 years ago on Introduction

    I tried, i used a hammer method and each trigger pull brings back the hammer to fire knew peice out of a turret. its on my page.

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    ~Meme~muhu1

    Reply 6 years ago on Introduction

    Actually, (not directed at oblivitus) there are many semi autos out there. Louis XIV was one.

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    GrandeSwagmuhu1

    Reply 7 years ago on Introduction

    http://knexinnovation.net/showthread.php?1108-WASP-War-Assault-Semi-automatic-Pistol Relax.

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    OblivitusGrandeSwag

    Reply 7 years ago on Introduction

    I consider that as less of a semi auto, at least in the respect that it doesn't have a power supply. Although it's more of one in the sense that it doesn't require cocking.

    Actually, all semi auto guns need cocking for the first shot, after that the gasses released from the bullets detonation reloads it.