Length Of Stefan?
#1
Posted 03 November 2008 - 10:13 PM
If you are part of the 8% who still listen to "real music",
copy and paste this into your signature
The only sport even more under rated than nerf is table tennis
#2
Posted 03 November 2008 - 10:16 PM
Nerf Rocket Air Launcher
#3
Posted 03 November 2008 - 10:19 PM
EDIT: Agreed with analogkid, try some different foam out and some different barrel materials.
Edited by Icespartan_1114, 03 November 2008 - 10:31 PM.
Church... gotta soak up that Jesus!
NERFSTRONG #51
#4
Posted 03 November 2008 - 10:21 PM
#5
Posted 03 November 2008 - 10:22 PM
#6
Posted 03 November 2008 - 10:39 PM
Nerf Rocket Air Launcher
#7
Posted 03 November 2008 - 10:46 PM
If you are part of the 8% who still listen to "real music",
copy and paste this into your signature
The only sport even more under rated than nerf is table tennis
#8
Posted 03 November 2008 - 11:01 PM
In my experience 2 inches works fine. Depends on the quality of the foam.In my experience, 2 in. Is way too long
#9
Posted 04 November 2008 - 12:57 AM
-Han Solo; Star Wars: A New Hope (IV)
#10
Posted 04 November 2008 - 09:00 AM
I personally use a different type of dart altogether in my blowgun. It consists of a piece of felt (cut out from a 8.5x11" piece of felt bought for ~a quarter at craft stores) wrapped/hot glued around the end of a plastic straw. Then I glue a ~.6x.6" piece onto the end, and cut off the excess. The result is a dart that is about six inches long (much easier to find) that I don't even bother to test (because they never fish tail if made right.) All of the weight is actually at the dart's head, with about 5.5" of plastic straw sticking out the back sort of a 'tail.'
Um...that didn't even answer his question about stefan lengths...
Back on topic: I personally use 1-1.5" darts for the same reason as Ubermensch but those who mentioned the barrel material are right. I found that my 1/2in cpvc worked well with 1" stefans. You'll have to experiment to see what works for you.
But you can totally shoot Vacc there, he loves it!
~Talio
#11
Posted 04 November 2008 - 03:00 PM
#12
Posted 04 November 2008 - 06:53 PM
If you are part of the 8% who still listen to "real music",
copy and paste this into your signature
The only sport even more under rated than nerf is table tennis
#13
Posted 04 November 2008 - 08:15 PM
It is called Dennis brand, it is great shit. Sorry for it being backwords. Oh yeah, I found it at Menards.
Edited by 123caviler, 04 November 2008 - 08:15 PM.
O YEAH!
Mr.Kool_Aid,
Your member account at NerfHaven has been temporarily suspended. blah blah blah
OMC is fucking god.
#14 Guest_fadinglight4_*
Posted 04 November 2008 - 08:45 PM
#15
Posted 05 November 2008 - 12:11 AM
Here's the link.
"It’s only after you’ve made the mistake and taken the wrong path, do you see all the other options that were before you."
#16
Posted 05 November 2008 - 04:51 PM
Your thread doesn't really touch on the reason we bother to have foam in the first place.Just read my topic that I posted about a year ago and that should clarify why the shorter ones work better.
Here's the link.
The foam on a dart is really only there for two reasons
1. To provide a sealing surface against the inner wall of the barrel. Each projectile has its own sabot attached to the weight so that optimally no pneumatic energy is allowed to escape.
2. To provide aerodynamic stability. The foam being behind the center of rotation on the projectile makes it inherently stable.
The longer the foam section behind the center of rotation is (up to a certain amount) the more stable it is. But the longer the foam is the more friction it will have against the walls of the barrel.
But the above assumes you have a barrel material that fits your foam well, that the dart has an effective amount of weight, and that the tip of the dart has a uniform aerodynamic profile.
The original reason I started using felt discs was to protect the target from the surface of the steel washer. But as I've been evaluating the performance of the darts I make with them the felt also seems to greatly improve the uniformity of the aerodynamic profile of the dart tip. If you do not make your dart tips consistently, then it can be very hard to accurately test the performance of different foam lengths.
So ideally you shouldn't have any foam forward of the center of rotation, unless it improves the aerodynamic profile of the tip.
Edited by CaptainSlug, 05 November 2008 - 04:53 PM.
#17
Posted 05 November 2008 - 11:49 PM
Your thread doesn't really touch on the reason we bother to have foam in the first place.
Good job, you just failed by posting something that doesn't help.
The foam on a dart is really only there for two reasons
1. To provide a sealing surface against the inner wall of the barrel. Each projectile has its own sabot attached to the weight so that optimally no pneumatic energy is allowed to escape.
The foam is on the dart to prevent air from going past the dart. It's there to act as wadding (aka: sabot)
2. To provide aerodynamic stability. The foam being behind the center of rotation on the projectile makes it inherently stable.
The foam shouldn't be too short or the rotation will make the dart spin-out.
The longer the foam section behind the center of rotation is (up to a certain amount) the more stable it is. But the longer the foam is the more friction it will have against the walls of the barrel.
The foam shouldn't be too long or the friction will stop the darts from ever leaving the barrel.
But the above assumes you have a barrel material that fits your foam well, that the dart has an effective amount of weight, and that the tip of the dart has a uniform aerodynamic profile.
The original reason I started using felt discs was to protect the target from the surface of the steel washer. But as I've been evaluating the performance of the darts I make with them the felt also seems to greatly improve the uniformity of the aerodynamic profile of the dart tip. If you do not make your dart tips consistently, then it can be very hard to accurately test the performance of different foam lengths.
The felt discs CaptainSlug uses makes the darts impact hurt less, makes a consistent tip on every dart and makes it easier to travel through the air. The darts the rest of us make (hot glue tip/dome) are inconsistent and therefore not adequate for testing another variable. Since the tip isn't the same, you can't test other things on the dart.
Edited by Lynx, 05 November 2008 - 11:50 PM.
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