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Whats better: opened "Tail" Vs. Closed "Tail&

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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What do u think is better ???

Opened tail
1
100%
Closed tail
0
No votes
 
Total votes : 1
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Whats better: opened "Tail" Vs. Closed "Tail&

Unread postAuthor: Mr. Beaver » Fri Dec 07, 2007 10:02 am

Hi, I have a Question, no, more of a thought, what is better an opened tail projectile Vs. closed tail projectile after using them both with my crapy leftover (not leftovers from a gun, leftovers from my home plumbing) gun:

Image

My conclusions was that the opened tail Projectile is better,wich is also by my common sense... here is a draw i made to explain what i'm talking about:

Image

Please fill free to reply :)
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Unread postAuthor: jrrdw » Fri Dec 07, 2007 2:50 pm

Did the closed tail projectile tumble during flight?
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Unread postAuthor: TwitchTheAussie » Fri Dec 07, 2007 9:05 pm

I say whatever builds up the most pressure before shooting.
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Unread postAuthor: Mr. Beaver » Sat Dec 08, 2007 7:28 am

jrrdw wrote:Did the closed tail projectile tumble during flight?


+- but i asked that because i don't really know to say whats better with my crappy gun i need someone to tell me, someone that can make the same pressure for both projectiles :)
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Unread postAuthor: Novacastrian » Sat Dec 08, 2007 7:37 am

If made uniformly a projectile with a hollow base should fly a lot straighter than a solid one. It is also lighter which means more velocity.
Think of the shape of airgun pellets. Make sure that the center of gravity is well towards the front of the round.
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Unread postAuthor: jrrdw » Sat Dec 08, 2007 10:23 am

Mr. Beaver wrote:
jrrdw wrote:Did the closed tail projectile tumble during flight?


+- but i asked that because i don't really know to say whats better with my crappy gun i need someone to tell me, someone that can make the same pressure for both projectiles :)


Well, in this case i agree with Nova.

Novacastrian Posted: 12/08/2007 8:37 AM Post subject:

If made uniformly a projectile with a hollow base should fly a lot straighter than a solid one. It is also lighter which means more velocity.
Think of the shape of airgun pellets. Make sure that the center of gravity is well towards the front of the round.




The reason i ask if it tumbled is the plug in the back of the projectile. It looks heavyer then the nose cone. Makes me think it's gonna go end over end inflight.
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