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| xpitxbullx |
 Posted: 06/06/2008 1:05 AM Post subject: Shooting golf balls that rise |
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Corporal
Joined: 16 May 2008
Posts: 65
205.82 Spud Bux
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Imagine the center of a 6 foot barrel bending out about 6" kind of like a simple archers bow.
I know that golf balls rise if they have back spin on them so I was thinking of making a golf ball barrel and using a cable and center pressure point to create a decent arc in the barrel. This should cause the ball to start spinning in the proper direction before leaving the barrel.
Do you think the arc will create enough friction to get the golf ball to backspin as much as a golf club creates? If it can, this will make a golf ball travel further than a ball with no spin from a straight barrel, IMHO.
You would have to just drop the ball in, though, and not use tissue for the tight fit. The gain in distance from the rise might not outweigh the distance gained from a tissue sabot.
What are your thoughts?
Jeff
Last edited by xpitxbullx on 06/06/2008 1:33 AM; edited 1 time in total |
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| Spitfire |
| Posted: 06/06/2008 1:13 AM Post subject: |
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Sergeant Major
Joined: 16 Nov 2007
Posts: 193
17.86 Spud Bux
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| IF you have a sleved barrel for the golf ball, the points where the sleeve meets ceates more than enough backspin, or front spin it depends on how you mount it |
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| pimpmann22 |
| Posted: 06/06/2008 3:49 AM Post subject: |
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Donating Moderator
Joined: 18 Feb 2005
Posts: 1607
4968.40 Spud Bux
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The barrel on my GB combustion has warped over time from being left out in the sun with only a fading spray paint job to protect it. If you shoot the cannon so the barrel is hooking upward you can generate some noticeable backspin.
I've noticed comparably to a driver the effect is more dramatic. The ball will stay fairly level tell about ~80 yds. out then it will hook upward. As well the bend in the barrel isn't all that much. Looking at the gun you can't hardly tell the warp in the barrel. So maybe jig up a barrel on a hot summer day, and no need for contraction? |
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| xpitxbullx |
| Posted: 06/06/2008 4:21 AM Post subject: |
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Corporal
Joined: 16 May 2008
Posts: 65
205.82 Spud Bux
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| pimpmann22 wrote: | The barrel on my GB combustion has warped over time from being left out in the sun with only a fading spray paint job to protect it. If you shoot the cannon so the barrel is hooking upward you can generate some noticeable backspin.
I've noticed comparably to a driver the effect is more dramatic. The ball will stay fairly level tell about ~80 yds. out then it will hook upward. As well the bend in the barrel isn't all that much. Looking at the gun you can't hardly tell the warp in the barrel. So maybe jig up a barrel on a hot summer day, and no need for contraction? |
Excellent idea! Las Vegas has the perfect weather for that. Haha.
Shouldn't the barrel be hooked downward so the friction is created on the top of the ball? This should spin the ball like a fast pitch baseball. With the top of the ball moving through the air slower than the bottom of the ball. The air resistance is greater on the bottom of the ball creating 'rise'. 2500+ rpm's should do the trick.
Jeff |
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| jimmy101 |
| Posted: 06/06/2008 10:45 AM Post subject: |
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Major General
Joined: 28 Mar 2007
Posts: 1594
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| King_TaTer |
| Posted: 06/06/2008 11:17 AM Post subject: |
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Master Sergeant
Joined: 17 Nov 2006
Posts: 161
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| I used sand paper one time. worked pretty good but it was hell to get it to stay in the end of the barrel. I wouldn't suggest curving the barrel its not really needed. |
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| THUNDERLORD |
| Posted: 06/06/2008 11:41 AM Post subject: |
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Loose Cannon
Joined: 28 Mar 2008
Posts: 707
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| King_TaTer wrote: | | I used sand paper one time. worked pretty good but it was hell to get it to stay in the end of the barrel. I wouldn't suggest curving the barrel its not really needed. |
I was thinking the same since many airsoft barrels use a rough spot at the end of the barrel.
Maybe a slit could be cut at the end and pressed slightly together, with the grip tape on top or bottom half.
Reminds me of another idea (against rules to discuss) similar to the way a match strikes against the striker.   |
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| Eddbot |
| Posted: 06/06/2008 16:42 PM Post subject: |
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Major
Joined: 09 Oct 2007
Posts: 362
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| or just make a simple hop-up system for a GB barrel, have a rubber strip on the top side of the barrel, holding the GB at the breech, this will create backspin and it should increase power a little cause the GB won't start to move until a higher pressure is reached |
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| FLONE |
| Posted: 06/06/2008 16:53 PM Post subject: |
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Private
Joined: 25 Apr 2008
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| A dab of pvc glue on the inside of the barrel at the muzzle, topside. |
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| SNDM |
| Posted: 06/07/2008 2:14 AM Post subject: |
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Sergeant
Joined: 26 Feb 2008
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| cut the end of the barrel off at an angle? |
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| starman |
| Posted: 06/07/2008 2:22 AM Post subject: |
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Big Daddio
Joined: 12 Dec 2007
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| SNDM wrote: | | cut the end of the barrel off at an angle? |
Now there's an interesting thought...wonder how much angle it would take to get some usable spin? May depend on on how much friction the projectile has on the barrel to begin with. |
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