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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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How far could a golf ball be propelled at STP?
I was reading Dave Barry today,
http://www.miamiherald.com/2007/02/1...ear-clubs.html , where he talks about an explosive golf club that could propel a ball up to 500 yards: "The Ballistic Driver is a ''swing-less'' golf club. You grip it as usual, and you position the head of the club next to the golf ball. But instead of swinging the club, you press an ''Activator Button'' on the grip; this detonates a small explosive charge inside the club head, which causes a metal plate to shoot out the side of the club a distance of 1.5 inches at a speed of 200 miles per hour. The plate hits the golf ball, which then, according to the brochure, goes ''250 yards, every time . . . down the middle, exactly where you aimed it, drive after drive." He goes on to say, "''it could theoretically propel the ball 500 yards.'' This means that a pathetic schlump like me could propel the ball farther than Tiger Woods Inc. hits it on those rare occasions when he is not filming American Express commercials. And who knows what lies down the road? I mean, if we can make a club that can hit the ball 500 yards, why not 1,000? Why not 1,500? Why not a mile?" And I wondered, why not a mile? A lot would depend on what kind of propulsion you used, but I'm guessing the muzzle velocity would be supersonic. Thanks, Rich |
#2
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How far could a golf ball be propelled at STP?
On 1/16/2012 11:55 AM, Rich Grise wrote:
I was reading Dave Barry today, http://www.miamiherald.com/2007/02/1...ear-clubs.html , where he talks about an explosive golf club that could propel a ball up to 500 yards: "The Ballistic Driver is a ''swing-less'' golf club. You grip it as usual, and you position the head of the club next to the golf ball. But instead of swinging the club, you press an ''Activator Button'' on the grip; this detonates a small explosive charge inside the club head, which causes a metal plate to shoot out the side of the club a distance of 1.5 inches at a speed of 200 miles per hour. The plate hits the golf ball, which then, according to the brochure, goes ''250 yards, every time . . . down the middle, exactly where you aimed it, drive after drive." He goes on to say, "''it could theoretically propel the ball 500 yards.'' This means that a pathetic schlump like me could propel the ball farther than Tiger Woods Inc. hits it on those rare occasions when he is not filming American Express commercials. And who knows what lies down the road? I mean, if we can make a club that can hit the ball 500 yards, why not 1,000? Why not 1,500? Why not a mile?" And I wondered, why not a mile? A lot would depend on what kind of propulsion you used, but I'm guessing the muzzle velocity would be supersonic. I think you'd have to define what it still means for it to be a "golf ball" after it stops. It seems pretty obvious that if you shot it through the air at the same trajectory as a typical driver - typically 8 to 11 degrees of loft - at a sufficiently high velocity, the thing would ignite. That ball would be unplayable as a golf ball for a subsequent "stroke." And of course, it's probably theoretically possible that it not only would ignite, but burn up completely. A meteorite the size of a golf ball entering the atmosphere is going to burn up completely. |
#3
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How far could a golf ball be propelled at STP?
Rich Grise wrote in
: [...] And I wondered, why not a mile? A lot would depend on what kind of propulsion you used, but I'm guessing the muzzle velocity would be supersonic. Neglecting all aerodynamic effects, I calculate that the minimum initial velocity would need to be approximately 580 feet per second. |
#4
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How far could a golf ball be propelled at STP?
On Mon, 16 Jan 2012 20:46:00 +0000 (UTC), Doug Miller
wrote: Rich Grise wrote in : [...] And I wondered, why not a mile? A lot would depend on what kind of propulsion you used, but I'm guessing the muzzle velocity would be supersonic. Neglecting all aerodynamic effects, I calculate that the minimum initial velocity would need to be approximately 580 feet per second.\ Ok. But remember that you can't ignore the aerodynamic effects with a golf ball. I'm sure you're aware of this, but some folks may not realize that those little dimples have quite a large (positive) effect. -- Ed Huntress |
#5
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How far could a golf ball be propelled at STP?
On Jan 16, 2:55*pm, Rich Grise wrote:
And I wondered, why not a mile? A lot would depend on what kind of propulsion you used, but I'm guessing the muzzle velocity would be supersonic. Thanks, Rich I am not convinced that you could propel a golf ball a mile. A golf ball is round , which is not very good at going long distances. In addition a golf ball is not very dense. Dan |
#6
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How far could a golf ball be propelled at STP?
--Remember the farther you can whack it at one go the farther off
the mark it'll land unless your accuracy is dead on. There's a point of diminishing returns in that calculation. OTOH if you just want range we use golfballs for ammo in our cannons in Northern California, bwahaha... -- "Steamboat Ed" Haas : Steel, Stainless, Titanium: Hacking the Trailing Edge! : Guaranteed Uncertified Welding! www.nmpproducts.com ---Decks a-wash in a sea of words--- |
#7
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How far could a golf ball be propelled at STP?
On Jan 17, 10:58*am, steamer wrote:
* * * * --Remember the farther you can whack it at one go the farther off the mark it'll land unless your accuracy is dead on. There's a point of diminishing returns in that calculation. OTOH if you just want range we use golfballs for ammo in our cannons in Northern California, bwahaha... -- * * * * "Steamboat Ed" Haas * * * * : *Steel, Stainless, Titanium: * * * * Hacking the Trailing Edge! *: *Guaranteed Uncertified Welding! * * * * * * * * * * * * *www.nmpproducts.com * * * * * * * * * *---Decks a-wash in a sea of words--- I worked over my ballistics simulatiom and fixed some errors. If the drag coef is around .5 I don't get ranges arounnd 400 meters when launced at 330 m/sec Mach 1, Terminal velocity is around 30 m/sec What kind of range are you getting with your cannon? I am thinking spin and dimples have got to be adding lift |
#8
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How far could a golf ball be propelled at STP?
--Haven't ever measured distance but I know it's a looooong walk to
the targets! :-) In my cannon I use about 50cc of Pyrodex per shot. -- "Steamboat Ed" Haas : Steel, Stainless, Titanium: Hacking the Trailing Edge! : Guaranteed Uncertified Welding! www.nmpproducts.com ---Decks a-wash in a sea of words--- |
#9
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How far could a golf ball be propelled at STP?
Rich Grise wrote:
I was reading Dave Barry today, http://www.miamiherald.com/2007/02/1...ear-clubs.html , where he talks about an explosive golf club that could propel a ball up to 500 yards: "The Ballistic Driver is a ''swing-less'' golf club. You grip it as usual, and you position the head of the club next to the golf ball. But instead of swinging the club, you press an ''Activator Button'' on the grip; this detonates a small explosive charge inside the club head, which causes a metal plate to shoot out the side of the club a distance of 1.5 inches at a speed of 200 miles per hour. The plate hits the golf ball, which then, according to the brochure, goes ''250 yards, every time . . . down the middle, exactly where you aimed it, drive after drive." He goes on to say, "''it could theoretically propel the ball 500 yards.'' This means that a pathetic schlump like me could propel the ball farther than Tiger Woods Inc. hits it on those rare occasions when he is not filming American Express commercials. I am a little surprised that no one mentioned the other side of the thing. The "equal and opposite reaction" thing. It's going to drive the "club " head backwards. Better be really holding on to the damn thing. Essentially this is a gun at right angle to, and on the end of, a yard long stick. That's going to be a bitch to control. Better would be a similar club that you swung, but that fired on contact. jk |
#10
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How far could a golf ball be propelled at STP?
On 01/17/2012 08:54 PM, jk wrote:
I am a little surprised that no one mentioned the other side of the thing. The "equal and opposite reaction" thing. It's going to drive the "club " head backwards. Better be really holding on to the damn thing. Essentially this is a gun at right angle to, and on the end of, a yard long stick. That's going to be a bitch to control. Better would be a similar club that you swung, but that fired on contact. The club will come to an instant stop, and hurt your arm. How about... place the explosive charge on the *back* side of the club head, so that the head is driven into the ball. |
#11
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How far could a golf ball be propelled at STP?
On Tue, 17 Jan 2012 21:34:20 -0800, beryl wrote:
On 01/17/2012 08:54 PM, jk wrote: I am a little surprised that no one mentioned the other side of the thing. The "equal and opposite reaction" thing. It's going to drive the "club " head backwards. Better be really holding on to the damn thing. Essentially this is a gun at right angle to, and on the end of, a yard long stick. That's going to be a bitch to control. Better would be a similar club that you swung, but that fired on contact. The club will come to an instant stop, and hurt your arm. Not necessarily. It depends on the weight of the club and its swing velocity versus the charge impulse and iplate weight. In fact..unless it was a huge charge and a big assed plate..I doubt it would even stop the club. How about... place the explosive charge on the *back* side of the club head, so that the head is driven into the ball. One could not be a successful Leftwinger without realizing that, in contrast to the popular conception supported by newspapers and mothers of Leftwingers, a goodly number of Leftwingers are not only narrow-minded and dull, but also just stupid. Gunner Asch |
#12
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How far could a golf ball be propelled at STP?
On 01/18/2012 04:35 AM, Gunner Asch wrote:
On Tue, 17 Jan 2012 21:34:20 -0800, wrote: On 01/17/2012 08:54 PM, jk wrote: I am a little surprised that no one mentioned the other side of the thing. The "equal and opposite reaction" thing. It's going to drive the "club " head backwards. Better be really holding on to the damn thing. Essentially this is a gun at right angle to, and on the end of, a yard long stick. That's going to be a bitch to control. Better would be a similar club that you swung, but that fired on contact. The club will come to an instant stop, and hurt your arm. Not necessarily. It depends on the weight of the club and its swing velocity versus the charge impulse and iplate weight. In fact..unless it was a huge charge and a big assed plate..I doubt it would even stop the club. You already have the inertia of the ball, and you're adding to that the recoil from the explosion. Now you have a broken arm. |
#13
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How far could a golf ball be propelled at STP?
On Wed, 18 Jan 2012 10:32:17 -0800, beryl wrote:
On 01/18/2012 04:35 AM, Gunner Asch wrote: On Tue, 17 Jan 2012 21:34:20 -0800, wrote: On 01/17/2012 08:54 PM, jk wrote: I am a little surprised that no one mentioned the other side of the thing. The "equal and opposite reaction" thing. It's going to drive the "club " head backwards. Better be really holding on to the damn thing. Essentially this is a gun at right angle to, and on the end of, a yard long stick. That's going to be a bitch to control. Better would be a similar club that you swung, but that fired on contact. The club will come to an instant stop, and hurt your arm. Not necessarily. It depends on the weight of the club and its swing velocity versus the charge impulse and iplate weight. In fact..unless it was a huge charge and a big assed plate..I doubt it would even stop the club. You already have the inertia of the ball, and you're adding to that the recoil from the explosion. Now you have a broken arm. Ii suggest you do the math a bit better. Gunner One could not be a successful Leftwinger without realizing that, in contrast to the popular conception supported by newspapers and mothers of Leftwingers, a goodly number of Leftwingers are not only narrow-minded and dull, but also just stupid. Gunner Asch |
#14
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How far could a golf ball be propelled at STP?
beryl wrote:
On 01/17/2012 08:54 PM, jk wrote: I am a little surprised that no one mentioned the other side of the thing. The "equal and opposite reaction" thing. It's going to drive the "club " head backwards. Better be really holding on to the damn thing. Essentially this is a gun at right angle to, and on the end of, a yard long stick. That's going to be a bitch to control. Better would be a similar club that you swung, but that fired on contact. The club will come to an instant stop, and hurt your arm. Not so, or not always so, it all depends on the mass of the ball the mass of the head, and the force delivered by the charge. As for "hurt your arm" no more so than a club can do already. People already have crappy follow through a lot of the time. Sure would make the game more "interesting" with people out on the course adjusting powder charges, cleaning their clubs of the fouling etc. How about... place the explosive charge on the *back* side of the club head, so that the head is driven into the ball. Just as (un) likely to "hurt" your arm. jk |
#15
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How far could a golf ball be propelled at STP?
On 01/19/2012 08:13 PM, jk wrote:
.... As for "hurt your arm" no more so than a club can do already. People already have crappy follow through a lot of the time. I sure did. Always tended to bend my elbows, instead of rotate at the shoulders. I think a Rolex would have helped. How about... place the explosive charge on the *back* side of the club head, so that the head is driven into the ball. Just as (un) likely to "hurt" your arm. Combining an explosive charge with inertial guidance would let golfers concentrate on style. |
#16
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How far could a golf ball be propelled at STP?
SNIP
Better would be a similar club that you swung, but that fired on contact. jk Funny you mentioned that. I just finished reading "The Million Dollar Golf Ball". Same concept, carried waaaaaaay to extreme with guidance, etc. -- Steve Walker (remove brain when replying) |
#17
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How far could a golf ball be propelled at STP?
On Sun, 22 Jan 2012 16:24:07 -0500, Steve Walker
wrote: SNIP Better would be a similar club that you swung, but that fired on contact. jk Funny you mentioned that. I just finished reading "The Million Dollar Golf Ball". Same concept, carried waaaaaaay to extreme with guidance, etc. Got a link? Gunner One could not be a successful Leftwinger without realizing that, in contrast to the popular conception supported by newspapers and mothers of Leftwingers, a goodly number of Leftwingers are not only narrow-minded and dull, but also just stupid. Gunner Asch |
#18
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How far could a golf ball be propelled at STP?
Funny you mentioned that. I just finished reading "The Million Dollar Golf Ball". Same concept, carried waaaaaaay to extreme with guidance, etc. Got a link? Actually ,I made a mistake. The title is "The Ten Million Dollar Golf Ball". It's fiction. Send me your address & I'll mail it out to you. -- Steve Walker (remove brain when replying) |
#19
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How far could a golf ball be propelled at STP?
On 01/22/2012 06:48 PM, Steve Walker wrote:
Funny you mentioned that. I just finished reading "The Million Dollar Golf Ball". Same concept, carried waaaaaaay to extreme with guidance, etc. Got a link? Actually ,I made a mistake. The title is "The Ten Million Dollar Golf Ball". It's fiction. Gummer's surgery made him the $50K Goof Ball. True story. |
#20
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How far could a golf ball be propelled at STP?
On Sun, 22 Jan 2012 21:48:34 -0500, Steve Walker
wrote: Funny you mentioned that. I just finished reading "The Million Dollar Golf Ball". Same concept, carried waaaaaaay to extreme with guidance, etc. Got a link? Actually ,I made a mistake. The title is "The Ten Million Dollar Golf Ball". It's fiction. Send me your address & I'll mail it out to you. Nah..thanks anyways. Fiction Ive got plenty of. VBG All I have to do is sit in front of the computer and read the Lefties posts for my fill of fiction. Gunner One could not be a successful Leftwinger without realizing that, in contrast to the popular conception supported by newspapers and mothers of Leftwingers, a goodly number of Leftwingers are not only narrow-minded and dull, but also just stupid. Gunner Asch |
#21
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How far could a golf ball be propelled at STP?
On Mon, 16 Jan 2012 11:55:06 -0800, Rich Grise wrote:
I was reading Dave Barry today, http://www.miamiherald.com/2007/02/1...ear-clubs.html , where he talks about an explosive golf club that could propel a ball up to 500 yards: "The Ballistic Driver is a ''swing-less'' golf club. You grip it as usual, and you position the head of the club next to the golf ball. But instead of swinging the club, you press an ''Activator Button'' on the grip; this detonates a small explosive charge inside the club head, which causes a metal plate to shoot out the side of the club a distance of 1.5 inches at a speed of 200 miles per hour. The plate hits the golf ball, which then, according to the brochure, goes ''250 yards, every time . . . down the middle, exactly where you aimed it, drive after drive." He goes on to say, "''it could theoretically propel the ball 500 yards.'' This means that a pathetic schlump like me could propel the ball farther than Tiger Woods Inc. hits it on those rare occasions when he is not filming American Express commercials. And who knows what lies down the road? I mean, if we can make a club that can hit the ball 500 yards, why not 1,000? Why not 1,500? Why not a mile?" And I wondered, why not a mile? A lot would depend on what kind of propulsion you used, but I'm guessing the muzzle velocity would be supersonic. I only skimmed the thread, so I don't know if it's been mentioned yet. If I'm remembering correctly, when you look at a high-speed video of a golf ball being hit, the ball deforms considerably. Then it rebounds off of the club. http://www.youtube.com/watch?v=Aa0j44ydQpQ Less representative of a real driver hit, but food for your thought: http://www.youtube.com/watch?feature...&v=AkB81u5IM3I There has to be some elastic limit reached where it either transmutes itself into Golf Confetti, or it attains the approximate mechanical compliance of a rock. In either case, the efficiency of the stroke is going to be lost. -- My liberal friends think I'm a conservative kook. My conservative friends think I'm a liberal kook. Why am I not happy that they have found common ground? Tim Wescott, Communications, Control, Circuits & Software http://www.wescottdesign.com |
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