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| Brian the brain |
 Posted: 10/03/2009 5:47 AM Post subject: |
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Dutch Spud Clan Leader
Joined: 05 Dec 2005
Posts: 2763
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I think it was "Powerlabs" that fired a golfball at mach 3 using guncotton..
| Quote: | | whether the golf balls are going to deform horribly under pressure and jam in the barrel | .
It cleared the barrel, that's for sure.. 
I would very much like to get the moose pics through pm..as well as some specs about velocity, projectile and such...
just to compare..
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| inonickname |
| Posted: 10/03/2009 5:59 AM Post subject: |
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Major General
Joined: 07 Dec 2008
Posts: 2487
6556.71 Spud Bux
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It's around a 0.2:1 C:B, so tiny.
In all honesty I hate this thread being kicked up, seeing this reminds me I should be building something. I've promised I will after I go pick up the mill slide for my lathe on Monday.
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| Reactor4 |
| Posted: 10/03/2009 10:34 AM Post subject: |
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Specialist
Joined: 02 Oct 2009
Posts: 58
139.61 Spud Bux
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yea my bad guys. I wasnt really paying attention so i just brought it up cuz i didn't feel like reading 18 pages of comments. 
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| jackssmirkingrevenge |
| Posted: 10/03/2009 11:10 AM Post subject: |
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aspiring machinist
Joined: 15 Mar 2007
Posts: 18061
32519.23 Spud Bux
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| Brian the brain wrote: | | I think it was "Powerlabs" that fired a golfball at mach 3 using guncotton... |
Mach 2 
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| Ragnarok |
| Posted: 10/03/2009 12:20 PM Post subject: |
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Lord of Karma
Joined: 19 Dec 2006
Posts: 5158
16113.53 Spud Bux
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| jackssmirkingrevenge wrote: | | Mach 2 |
Went reading, and found this...
| Sam Barros wrote: | | The golf ball then must have had a kinetic energy in the 13000J range, and flown over 10kM (6mi+) horizontally |
Like hell it did. Even for that muzzle velocity, half a mile is about the limit for a golf ball.
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| jackssmirkingrevenge |
| Posted: 10/03/2009 12:30 PM Post subject: |
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aspiring machinist
Joined: 15 Mar 2007
Posts: 18061
32519.23 Spud Bux
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| Ragnarok wrote: | | Like hell it did. Even for that muzzle velocity, half a mile is about the limit for a golf ball. |
Agreed, even the streamlined, dense bullet from a 50 BMG round leaving the barrel at mach 3 can "only" manage about 7,500 yards.
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| spud downunder |
| Posted: 10/03/2009 15:57 PM Post subject: |
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Joined: 09 Jun 2009
Posts: 50
7.24 Spud Bux
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| Hey, so does any one know what happened with the golfball barrel he made? did it work? is he still alive?
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| Larda |
| Posted: 10/06/2009 16:26 PM Post subject: |
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Donating Member
Joined: 18 Jul 2007
Posts: 108
274.88 Spud Bux
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| inonickname wrote: | | Reactor4 wrote: |  Damn. I've done machining before, but that is nice! Did you thread those yourself (on a lathe maybe?) |
Please don't dig up old threads. It tends to get people annoyed.
Every part was CNC machined by him on lathe or mill. |
Actually its only a few parts that i did CNC machine, the lamps to hold the chamber.
I could have CNC machined everything but its a good traning to do it manually. 
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| Willdebeers |
| Posted: 10/06/2009 16:33 PM Post subject: |
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2nd Lieutenant
Joined: 03 Feb 2009
Posts: 225
47.96 Spud Bux
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| Your'e so lucky you've got a machine shop!...wait a second...so do I. What kind of mill is that you got there? Seems very good.
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| Larda |
| Posted: 10/06/2009 16:40 PM Post subject: |
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Joined: 18 Jul 2007
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| Reactor4 |
| Posted: 10/06/2009 16:48 PM Post subject: |
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Joined: 02 Oct 2009
Posts: 58
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| Quote: | | I could have CNC machined everything but its a good traning to do it manually |
Yea I agree. I have lots of experience on CNC (solidworks ) and I can say it gives you more a sense of self accomplishment when you do your stuff manually.
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| ramses |
| Posted: 10/06/2009 18:27 PM Post subject: |
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Joined: 29 May 2008
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That is amazing. You need to make some darts for the 1.7" barrel.
It makes me kind of sad watching you destroy perfectly good raw materials, but I suppose you have enough of those laying around that it doesn't bother you.
what frame rate did you use on the high speed clips? 600fps from an ex-f1?
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| jackssmirkingrevenge |
| Posted: 10/06/2009 21:11 PM Post subject: |
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aspiring machinist
Joined: 15 Mar 2007
Posts: 18061
32519.23 Spud Bux
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New videos, same reaction 
I really do have to build me one of these.
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| rp181 |
| Posted: 10/06/2009 21:36 PM Post subject: |
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Brigadier General
Joined: 13 Dec 2007
Posts: 1115
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But what would you epoxy? 
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| psycix |
| Posted: 10/07/2009 3:44 AM Post subject: |
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Donating Member
Joined: 25 Jun 2007
Posts: 3701
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| Easy: take a pipe, take a dumpster. Hole in dumpster. Pipe in dumpster, through hole, fill dumpster with epoxy. Done.
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