Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 58 users online :: 3 registered, 0 hidden and 55 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Sureshot BL-625 action video

Built a combustion cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
Sponsored 
  • Author
    Message

Unread postAuthor: jagerbond » Thu Apr 23, 2009 3:03 pm

added video of 10 second upshot.
[youtube]http://www.youtube.com/watch?v=KVgMN5lU5nM[/youtube]

Mike
Sureshot Inc. / http://www.ultimatespudgun.com/
  • 0

User avatar
jagerbond
1st Lieutenant
1st Lieutenant
 
Posts: 286
Joined: Tue Jul 29, 2008 5:33 am
Location: Hawaii
Reputation: 0

Unread postAuthor: Technician1002 » Thu Apr 23, 2009 5:51 pm

jagerbond wrote:added video of 10 second upshot.

Mike
Sureshot Inc. / http://www.ultimatespudgun.com/


Great hang time. :)

Just for grins, here is my little 54 cu in launcher with the way oversize barrel.
It doesn't even compare in hang time.
[youtube]http://www.youtube.com/watch?v=ZUTXomfdLTE[/youtube]
I'll have to try later with the larger tank 2 inch version.. :D
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: Moonbogg » Thu Apr 23, 2009 9:32 pm

try it again with a SOLID LEAD BALLLLLL!
  • 0

User avatar
Moonbogg
Major General
Major General
 
Posts: 1375
Joined: Mon Oct 13, 2008 10:20 pm
Location: whittier, CA USA
Reputation: 0

Unread postAuthor: Technician1002 » Fri Apr 24, 2009 12:09 pm

Moonbogg wrote:try it again with a SOLID LEAD BALLLLLL!


:) Um, you try it and post the video. :D
I don't have a lead ball that caliber, but I do have tennis balls.
:wink:
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: jagerbond » Wed Apr 29, 2009 6:34 am

Video Redux More TV's, shooter+target angles, 1/8" Plate steel, cinder blocks.

[youtube]http://www.youtube.com/watch?v=5yRGeMjT-1s[/youtube]

Most of the added scenes used TBs with H20

Mike
Sureshot / http://www.ultimatespudgun.com
  • 0

User avatar
jagerbond
1st Lieutenant
1st Lieutenant
 
Posts: 286
Joined: Tue Jul 29, 2008 5:33 am
Location: Hawaii
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Wed Apr 29, 2009 10:12 am

Nice :) you should have a go at the steel using a dart shaped projectile in a sabot.

Recoil doesn't look too bad either, substantial but manageable.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Moonbogg » Wed Apr 29, 2009 3:35 pm

Technician1002 wrote:
Moonbogg wrote:try it again with a SOLID LEAD BALLLLLL!


:) Um, you try it and post the video. :D
I don't have a lead ball that caliber, but I do have tennis balls.
:wink:


Oh..I think it would rip my arm off.
  • 0

User avatar
Moonbogg
Major General
Major General
 
Posts: 1375
Joined: Mon Oct 13, 2008 10:20 pm
Location: whittier, CA USA
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: USGF » Wed Apr 29, 2009 3:46 pm

I wonder how a Minie ball style round would work?

http://en.wikipedia.org/wiki/Mini%C3%A9_ball
  • 0

User avatar
USGF
Master Sergeant
Master Sergeant
 
Posts: 173
Joined: Sun Mar 08, 2009 5:39 am
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Wed Apr 29, 2009 3:51 pm

USGF wrote:I wonder how a Minie ball style round would work?


Not very well unless the barrel is rifled, or the a significant portion of the base is hollow.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: jagerbond » Wed Apr 29, 2009 3:59 pm

Anyone rifle a round and shoot through Spudgun smooth bore with success? I know the Brenneke's work well out of my Ithaca model 37 deerslayer.

http://www.brennekeusa.com/

Mike
Sureshot / http://www.ultimatespudgun.com
  • 0

User avatar
jagerbond
1st Lieutenant
1st Lieutenant
 
Posts: 286
Joined: Tue Jul 29, 2008 5:33 am
Location: Hawaii
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Wed Apr 29, 2009 4:10 pm

jagerbond wrote:Anyone rifle a round and shoot through Spudgun smooth bore with success? I know the Brenneke's work well out of my Ithaca model 37 deerslayer.


Brenneke slugs flying straight has a lot more to do with the lightweight tail than the "air rifling".
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: jagerbond » Wed Apr 29, 2009 4:26 pm

I would like to design some "testing" rounds, to help document/develop performance modifications. Some initial thoughts were to upsize airgun pellet designs in UHMW.

Mike
Sureshot / http://www.ultimatespudgun.com
  • 0

User avatar
jagerbond
1st Lieutenant
1st Lieutenant
 
Posts: 286
Joined: Tue Jul 29, 2008 5:33 am
Location: Hawaii
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Thu Apr 30, 2009 12:11 am

jagerbond wrote:I would like to design some "testing" rounds, to help document/develop performance modifications. Some initial thoughts were to upsize airgun pellet designs in UHMW


Shotgun slugs are a good place to start if you're making projectiles for a smoothbore barrel, after all most of them are designed to be stable without being rifled. I've seen shotgun slugs that replicate the airgun pellet "diablo" shape, here's a similar one:

Image

The critical design feature is the hollow tail which puts the centre of gravity well forward enabling it to fly straight. Foster type slugs work on the same principle:

Image

Don't bother with the "air rifling", in shotguns it's mainly done to enable the slug to compress while passing through the muzzle choke without blowing the barrel off.

Here's one you can easily makefor a 3/4" barrel:

Image
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: USGF » Thu Apr 30, 2009 1:41 am

JSR, How would this design work? This for rifled 1.5 inch sched 40 barrels. Volume is 1.89 cu inch. It would weigh about 3/4 lb in lead. The red dot is center of gravity. The nose could be made sharper, this would move CG forward. Could be scaled up or down.
  • 0

Attachments
pellets.jpg
Large Pellet
User avatar
USGF
Master Sergeant
Master Sergeant
 
Posts: 173
Joined: Sun Mar 08, 2009 5:39 am
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Thu Apr 30, 2009 2:12 am

Nice rendering :)

That should work well even without a rifled barrel, and a sharper nose would both add stability and increase aerodynamic efficiency and penetration. What's the material and construction technique you had in mind?

Also, would it not be simpler to have the projectile made foster-style as a straight walled cylinder? Perhaps with the body slightly turned down to reduce barrel friction, something like this:
  • 0

Attachments
slug.gif
slug.gif (2.24 KiB) Viewed 492 times
User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

PreviousNext

Return to Combustion Cannon Database

Who is online

Registered users: Bing [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'