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how to prevent ammo to fall when you shoot in down direction

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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how to prevent ammo to fall when you shoot in down direction

Unread postAuthor: victorjung » Mon Nov 07, 2011 10:16 am

Hi guy's! I hate something with homade airgun it's when we shoot to the down direction and the ammo just slide down the barrel!!! I had an idea; i bouhgt 8mm ( as my barrel )steel balls (made fore bearings ) and i thought i just set a small magnet on the extern side of my barrel and it will be done. But thoose f*****g balls are stainless steel and it doesn t magnet :( i can change ammo and use a magnet but it will be great if i cokld use thoose stainless balls :) i thought about put dome paper into the barrel after my ball but it s not really ellegant :) so any ideas guys ?? Note that i m charging my gun through the exit side of the barrel !
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Unread postAuthor: pneumaticcannons » Mon Nov 07, 2011 10:31 am

create a detent and tune it so that when you roll the ammo down the barrel, it's momentum overcomes the detent but when you tilt it back down they can't pick up speed and are therefor held in place by the detent. I assume you are using precision ammo?
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Re: how to prevent ammo to fall when you shoot in down direc

Unread postAuthor: Goats spudz » Mon Nov 07, 2011 10:56 am

use a detent

and work on that grammar
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Unread postAuthor: e_smith2000 » Mon Nov 07, 2011 11:18 am

For my gun i have the ammo held in place by the spring in the magazine.

http://www.youtube.com/watch?v=A6Gs2mKNjV0
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Unread postAuthor: RJB INDUSTRIES » Mon Nov 07, 2011 2:47 pm

or with a simple magnet...
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Unread postAuthor: victorjung » Mon Nov 07, 2011 2:47 pm

Thanks all of you but i dont understand what you call a detent :)
thanks
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Re: how to prevent ammo to fall when you shoot in down direc

Unread postAuthor: MrCrowley » Mon Nov 07, 2011 2:48 pm

victorjung wrote:...and it doesn t magnet

Fûcking magnets, how do they work?


Had to be done
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Re: how to prevent ammo to fall when you shoot in down direc

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Unread postAuthor: victorjung » Mon Nov 07, 2011 2:49 pm

RJB INDUSTRIES wrote:or with a simple magnet...

i thought about this but this stainless steel doesnot magnet:(
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Unread postAuthor: MrCrowley » Mon Nov 07, 2011 2:50 pm

victorjung wrote:Thanks all of you but i dont understand what you call a detent :)
thanks

Image
Photo credit: jackssmirkingrevenge (I think).
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Last edited by MrCrowley on Mon Nov 07, 2011 4:34 pm, edited 1 time in total.
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Unread postAuthor: e_smith2000 » Mon Nov 07, 2011 3:08 pm

victorjung wrote:i thought about this but this stainless steel doesnot magnet:(


I think i am missing something here...

Steel is made up of 2 things, iron and carbon. Stainless steel is steel with chromium. Iron is a ferromagnetic material. Logically anything that consists mostly of iron should be able to attract magnets - stainless steel included.
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Unread postAuthor: RJB INDUSTRIES » Mon Nov 07, 2011 3:15 pm

so the magnets could work...
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Unread postAuthor: SpudBlaster15 » Mon Nov 07, 2011 3:54 pm

e_smith2000 wrote:I think i am missing something here...

Steel is made up of 2 things, iron and carbon. Stainless steel is steel with chromium. Iron is a ferromagnetic material. Logically anything that consists mostly of iron should be able to attract magnets - stainless steel included.


300 series stainless alloys (What the OP almost certainly has) contain austenite, a non-magnetic allotrope of iron, rather than ferromagnetic structures such as ferrite and martensite. In slightly more technical terms, gamma-iron (Austenite) has a face-centered cubic crystal structure, while most of the other room temperature stable forms have a body-centered cubic or body-centered tetragonal structure. This difference leads to austenitic stainless steel lacking magnetic properties.

As for the original question, I'd suggest simply gluing a small piece of rubber or similar material inside the barrel near the breech end. This should function in a similar manner to a spring-loaded detent, while being much easier and less expensive to implement.
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Last edited by SpudBlaster15 on Mon Nov 07, 2011 4:21 pm, edited 1 time in total.
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Unread postAuthor: victorjung » Mon Nov 07, 2011 4:15 pm

hi thx for the pic about the detent i gonna try something like that :)
so for stainless steel it's maybe steel but i am pretty sure that stainless never magnet :) i also heard abouta simple test to know if a stainless is good quality its to try to magnet it, if it magnets so you have bad stainless:) mine stainless steel magnets a verry verry little bit... but never enough to use a magnet to hold ammo in my barrel !!!
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Unread postAuthor: RJB INDUSTRIES » Mon Nov 07, 2011 4:32 pm

That´s right but I weren´t talking to use it on holding stainless amos...
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Unread postAuthor: CooperJS » Tue Nov 08, 2011 1:41 am

maybe your magnet isn't strong enough?
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