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| trollhameran |
 Posted: 05/14/2008 2:06 AM Post subject: |
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Lieutenant Colonel
Joined: 04 Dec 2007
Posts: 491
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right i understand them alot better now, thanks for explaining.
Hopefully if this valveless idea works it will have the efficiency of a burst disc but without the management and cost issues. |
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| jackssmirkingrevenge |
| Posted: 05/14/2008 5:33 AM Post subject: |
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space monkey
Joined: 15 Mar 2007
Posts: 6485
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| jrrdw wrote: | | Sgort87 and I was kicking this idea around a little bit. I think you may be the first to build a working model. |
*cough COUGH*
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| SPG |
| Posted: 05/14/2008 10:28 AM Post subject: |
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2nd Lieutenant
Joined: 09 Feb 2006
Posts: 236
500.93 Spud Bux
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Say "Ahhhhhhh"
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| thewarp16 |
| Posted: 05/14/2008 13:15 PM Post subject: |
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Sergeant
Joined: 08 Jan 2008
Posts: 80
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did come on msn now i have the best how to video on youtube yet its small loud and might kill us oh and it uses petrol!!!
ohh yeah every one there are videos on youtube of this working if u search velveless or how ever u spell it.
good idea and gun;-) |
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| Carlman |
| Posted: 05/14/2008 13:18 PM Post subject: |
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The Aussie
Joined: 24 Nov 2007
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| thewarp16 wrote: | | did come on msn now i have the best how to video on youtube yet its small loud and might kill us oh and it uses petrol!!! |
what? that made no sense |
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| thewarp16 |
| Posted: 05/14/2008 14:50 PM Post subject: |
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Sergeant
Joined: 08 Jan 2008
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| sorry i was talking to the maker of this thread lolz we go to the same college |
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| trollhameran |
| Posted: 05/14/2008 15:39 PM Post subject: |
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Lieutenant Colonel
Joined: 04 Dec 2007
Posts: 491
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Jack was the one you made the one that used air rifle pellets? i remember reading about it a few days ago, kinda inspired me to make this one.
lol G u really need to learn to type properly, your post almost makes sense.
Might post my drawings for this gun tomorrow, or i might wait untill ive made the entire gun first |
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| jackssmirkingrevenge |
| Posted: 05/15/2008 5:06 AM Post subject: |
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space monkey
Joined: 15 Mar 2007
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| trollhameran wrote: | | Jack was the one you made the one that used air rifle pellets? i remember reading about it a few days ago, kinda inspired me to make this one. |
Yep, all my own work  The way I see it there are two basic ways of making a valveless launcher, either have a stop that jams the projectile in place until it's ready to fire, like my prototype, or create a configuration where the air pressure exerts no force on the projectile until the latter is moved, as in this patented design:
The unfortunate dilema with these designs however, aside from sealing issues that are hard to circumvent on an amateur level, is that your choise of projectiles is very limited. I think the best compromise is a burst disk, as it offers similar flow and minimal opening time while letting you launch whatever fits in your barrel. |
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| trollhameran |
| Posted: 05/15/2008 15:04 PM Post subject: |
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Joined: 04 Dec 2007
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| thewarp16 |
| Posted: 05/15/2008 15:48 PM Post subject: |
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Sergeant
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is this the thread you were talking about or is there a nother one some were and there is nuffin wrong with the way i type lol.
mmmm "soda" |
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| trollhameran |
| Posted: 05/15/2008 15:55 PM Post subject: |
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Lieutenant Colonel
Joined: 04 Dec 2007
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| yh its this one, lol that post was quite good typing actually |
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| jrrdw |
| Posted: 05/15/2008 21:00 PM Post subject: |
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Donating Moderator
Joined: 16 Nov 2005
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Sorry Jack, you gotta point these things out to me from time to time! Now I feel bad....  |
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| trollhameran |
| Posted: 05/16/2008 1:44 AM Post subject: |
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Lieutenant Colonel
Joined: 04 Dec 2007
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| now working on a shell made out of a board marker lid and another rubber seal, had first test with it this morning, think i need to finish the trigger before i test again though |
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| trollhameran |
| Posted: 05/17/2008 11:17 AM Post subject: |
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Lieutenant Colonel
Joined: 04 Dec 2007
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| ok the casing from a board marker makes an excellent shell, it seals at 110psi and can fit alot of bbs or anything else you may want to fire in it, just tested it and the casing hit the wall and shattered into about 20 pieces and scattered about 30 feet aways from the wall it hit, so now im on a search for more board markers |
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| thewarp16 |
| Posted: 05/17/2008 11:22 AM Post subject: |
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Sergeant
Joined: 08 Jan 2008
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lmfao now im on the hunt for more board markers.
yea im gluing up the chamber and u bend of my shotty now lol |
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