Page 10 of 61
Posted: Mon Mar 26, 2012 7:53 am
by Petitlu
it does not work?
I did a lot of research and I do not remember where I got it ...
Posted: Mon Mar 26, 2012 8:14 am
by dewey-1
The Wiki shows a how to.
I will do a correct diagram for you!
Posted: Mon Mar 26, 2012 8:22 am
by Petitlu
it's nice!
thank you !
Posted: Mon Mar 26, 2012 12:34 pm
by jackssmirkingrevenge
Here you go, some sabots for your 8mm BALLS OF STEEL!
Posted: Mon Mar 26, 2012 12:41 pm
by Petitlu
Excellent!
Steel will take full teeth!
Super power of penetration!
Posted: Mon Mar 26, 2012 12:52 pm
by jackssmirkingrevenge
The problem is that this design won't really separate. It's probably best if I make some in three parts, one "pusher plate" and two "petals" to hold the ball. That way you will have a better change of recovering them for re-use.
Posted: Mon Mar 26, 2012 1:07 pm
by Petitlu
If the ball is lightly glued, to the output of the barrel the sabot will go, no ?
3 part is more complicated and lengthy to make...
Posted: Mon Mar 26, 2012 1:37 pm
by jackssmirkingrevenge
Petitlu wrote:If the ball is lightly glued, to the output of the barrel the sabot will go, no ?
3 part is more complicated and lengthy to make...
With the force of the acceleration, the ball will dig into the sabot and will not separate.
Not too complicated to make a three part one, I have a slitting saw on the mill
not today though, got some other stuff to work on.
In the meantime, dug up a test on 2 x 2mm steel sheets with a 1540 0.50 calibre black powder musket.
This is the second sheet, at 1150 feet per second the lead ball penetrated the first sheet and dented the second (the two shots at the bottom of the picture). The top two shots were penetrations of the two sheets with an increased powder charge at 1330 feet per second.
Posted: Mon Mar 26, 2012 3:50 pm
by Petitlu
the difference is astounding and low ft/s separate them !
Posted: Mon Mar 26, 2012 3:54 pm
by jackssmirkingrevenge
Don't forget:
In this case, the second shot is 16% faster, but it has 31% more kinetic energy.
Posted: Mon Mar 26, 2012 3:59 pm
by Petitlu
Effectively!
is the speed to the square !
Also the act of taking a lighter projectile increases its speed and therefore its kinetic energy...
Posted: Mon Mar 26, 2012 4:33 pm
by jackssmirkingrevenge
Petitlu wrote:Also the act of taking a lighter projectile increases its speed and therefore its kinetic energy...
Not necessarily,
this is my favourite quote on the issue
Posted: Mon Mar 26, 2012 5:00 pm
by Petitlu
I have read and many factors come into play for the penetration of projectiles!
.50 cal my bullets are pure lead and so much deform on impact but it melts a hole in the steel of 2mm!
Posted: Mon Mar 26, 2012 6:32 pm
by dewey-1
Here is a correct wiring diagram for a 12 VDC Automotive Type Relay.
Posted: Mon Mar 26, 2012 6:50 pm
by al-xg
Not necessarily
Which reminds me,
http://patator.frbb.net/t9874p420-blabla-libre#255834 pretty interesting results
Ah nice clear schematic dewey-1 !
I reckon the steel post PetitLu is shooting at is harder to penetrate than a flat plate of the same metal and thickness.