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Lever Action Ng

Is it possible?

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#1 Prometheus

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Posted 25 April 2006 - 03:35 PM

I was recently talking to a friend, (like today) and was wondering if it is possible to create a lever-action Ng, like the old lever-action rifles used by the US Army. I have always wanted a real lever-action .22 Magnum, but it would be even sweeter to have a nerf version.
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#2 MFRnync

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Posted 25 April 2006 - 04:10 PM

What lever action rifle, may I ask, was ever in standard service with the United States military? Search for the Buzz Bee toys, rapid fire rifle.
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#3 boltsniper

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Posted 25 April 2006 - 04:41 PM

Both the Henry and Spencer rifles were used by units during the civil war. As far as "standard" service goes, none.

A lever action homemade would be very badass, but also very hard to pull off. Not only do you have either a tube or box magzine to deal with, you have a complex array of links and sliding components that make up the action. I`m not saying it is impossible but it will be very hard to pull off in PVC and other homemade materials.
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#4 fobpawwor

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Posted 25 April 2006 - 07:55 PM

This would be a great idea, but because the nerf bullets are about the same size as shotgun shells. So you can copy the lever design off of some of the guns bolts.niper mentioned. But this could be very hard because you would need many metal parts.
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#5 Gyrvalcon

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Posted 26 April 2006 - 11:20 AM

Well Folks, I apologize for Prometheus' quick, rash post. I was hoping to have some actual work done on this project before it was posted. However, I may as well post one of the designs now.

Posted Image

This design has definitely not been perfected, and is a work in progress.
It utilizes a FAR-like pressure chamber setup, as well as a GNS/SCAR inspired fire control system.
The cocking action is acheived by a lever with a second, sliding fulcrum attatched to the pressure chamber. This lever is vaguely "Y" shaped, with the two arms of the "Y" on each side of the PC.

A second, but more expensive/fiddly option would be to use a rack+pinion system to achieve the cocking action.

The best part of the Lever Action is it allows the user to "spin-cock" the gun one handed. This in itself is radical, but it brings with it the possibilty of -dare I say it- effective dual wielding

Please post your comments/ideas.

Edited by Gyrvalcon, 26 April 2006 - 01:04 PM.

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#6 Carbon

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Posted 26 April 2006 - 12:23 PM

Cool design...two thoughts.

Wouldn't your magazine need to be farther forward?

The pivot point is going to have a huge amount of stress placed on it. I also wonder about having enough mechanical advantage to compress a suitably strong spring with that lever arrangement. Which means nothing, it was just my initial thought looking at it.

Looking forward to seeing it evolve.
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#7 Gyrvalcon

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Posted 26 April 2006 - 01:00 PM

Wouldn't your magazine need to be farther forward?

The pivot point is going to have a huge amount of stress placed on it. I also wonder about having enough mechanical advantage to compress a suitably strong spring with that lever arrangement.

First, thankyou for the feedback. It is encouraging.

-The magazine's placement is questionable, I agree. I originally had a vertical one on the design, for simplicitys sake, but angled it in an attempt to give the lever enough room to complete its swing. If it is not possible to squeeze it in, it may need to be mounted sideways.

-The lever is the main reason why this project's viability is suspect. Although I think it would be possible to mount it with enough strength, the mechanical advantage is low. Perhaps adding a spring that assists the PC/lever on its way towards the butt would decrease the amount of force needed to cock it. Of course, then more force would be needed to bring the lever back.
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#8 boltsniper

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Posted 26 April 2006 - 02:45 PM

The best part of the Lever Action is it allows the user to "spin-cock" the gun one handed. This in itself is radical, but it brings with it the possibilty of -dare I say it- effective dual wielding


As long as your gun has enough mass to carry enough energy into the spring to cock it and still make it all the way around.

That would be very badass if it worked.

Your design looks pretty good. Very simple. You will definitely have to make the lever our of something substantial. Like aluminum or steel.

Are you planning on shells or no?
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#9 Gyrvalcon

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Posted 26 April 2006 - 04:36 PM

Are you planning on shells or no?

Thanks for the comments.
I need to get to Home Depot and get more PVC, and get started on this for real.

I was hoping that I would not need to use shells, however, my early breech designs have not been successful in maintaining a good seal, so I may need to.
I am somewhat anxious about using shells due to the whole extractor/ejector component though. To tell the truth, I don't even fully understand how it works on the SCAR.
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#10 Gyrvalcon

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Posted 05 May 2006 - 08:23 PM

Well, it's been a while since I posted, but progress on the core of the gun has been made. It's amazing how difficult it is to find brass in small-town Canada. A pressure chamber, barrel assembly, upper receiver, and an unfinished plunger are now in front of me. Instead of regular PVC I had to use conduit piping, as well as an ABS endcap because of availability problems.

Posted Image

Posted Image

As far as "evolution" of the plan is concerned, I have realized that to make the lever (pictured in the previously posted plans) work, I would need to give the track that the PC pin slides in a curve backwards. This way, the angle between the PC and the lever will not decrease too much/at all.
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#11 CaptainSlug

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Posted 05 May 2006 - 08:54 PM

Your spin-cock idea definitely won't work since your spring is going to have a higher compressed load rate than the rate of the gun rotating can counter. You could however put a shoulder-strap on the rear of the gun so you can push the lever forward with a single hand.

If you use a brass barrel and breech system it will be much easier to make sure that only one dart gets advanced in each cycle. And you could make the magazine at that angle shown in the image provided it's loaded with darts at an angle that is parallel to the barre. That would make the mechanism easier to design.

I had never thought about lever action previously because it usually doesn't offer the right amount of travel for priming a spring that I would prefer.

Edited by CaptainSlug, 05 May 2006 - 09:04 PM.

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