I was thinking about the magnetic stops that some use to get more velocity out of their blowgun, and I was wondering if there are any magnets that have a field that is deep but not wide. In other words, are there any magnets that are strong but have a narrow field of affect. That would allow a projectile to be held in place, but not slow down the acceleration once the dart/projectile has moved past the magnet.
Posted 13 December 2012 - 04:32 PM
- neondog likes this
Posted 30 December 2012 - 10:28 AM
Magnetic attraction is very similar to the "attraction" found at the business end of a running vacuum cleaner. With a typical rare earth magnet, the field is almost undetectable just a few inches away but as you get closer it builds more rapidly with each decrease in separation. I was recently holding two in the same hand, got a bit reckless and they snapped together with a bit of skin between them. It went from not enough force to drag one another (less than two ounces of weight apiece) to so much force that I got a blood blister within two inches of distance decrease.
You can shape the field by placing an open ended cylinder of ferrous material around the magnet greatly reducing "side pull."
Posted 29 September 2014 - 10:35 AM
NeonDog has this correct.
If you want to get a series of magnetic rings on the barrel to test the theory (@ $3.50), based on the internal ballistices, in order to get optimum performance, place the first one at 4 in. from the mouthpice end. This will keep the wire centered after passing the anti-inhale ring. Then place another one about every 9 in. down the barrel (so one each from the mouthpiece at 4, 13, 22, 31 and 40 inches - a total of five rings $17.50) to optimize the magnetic pull while the dart is shot. http://www.blowgun.c...aspx?itemid=901
Since these are static placed magnets, not electronically manipulated fields, as with a cyclotrone, they will have a slightly adverse affect of "keeping" the dart, rather than "pulling" it. Running the numbers on my PC, I see no real benefit to it.
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