 | | Re: Call me a Lego pureist if you will but...
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I toyed with sewing thread. I tied it to the end of the dart and fed it through the cannon. Here are my observations. 1. Rewinding and reloading works fairly well. As long as the dart doesn't approach the cannon at a right angle to the barrel, it (...) (24 years ago, 25-Apr-01, to lugnet.robotics)
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| | Re: Call me a Lego pureist if you will but...
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(...) Why not use a winch with only 1 circlular plate on the axle? Once the projectile is re-loaded turn the winch through 90 degree's so that the axle is in line with the dart. Fire the dart and the thread will spool off the end of the axle (...) (24 years ago, 25-Apr-01, to lugnet.robotics)
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| | RE: Call me a Lego pureist if you will but...
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... (...) ... (...) If you don't pre-accelerate the winch or outright power it, then some of the energy that propels the dart out of the cannon will be needed to accelerate the spindel. That will happen right away, as the dart leaves the cannon. (...) (24 years ago, 25-Apr-01, to lugnet.robotics)
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| | Re: Call me a Lego pureist if you will but...
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(...) Gear up a old 9V motor to spin the spindle very fast, and then spin it just before and while the dart is flying. You may be able to keep up the thread payout with enough gearing. Andy -- See my Visual Interface for leJOS at (URL) (24 years ago, 26-Apr-01, to lugnet.robotics)
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| | Re: Call me a Lego pureist if you will but...
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(...) I am right, you are wrong. Steve And my implementation would be a lot easier to build and operate. (24 years ago, 26-Apr-01, to lugnet.robotics)
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| | Re: Call me a Lego pureist if you will but...
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(...) I forgot to mention that while I have only one cannon, I have a total of 6 'arrows', so I'd be happy to reload those. Jürgen (24 years ago, 26-Apr-01, to lugnet.robotics)
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| | Re: Call me a Lego pureist if you will but...
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(...) Well that makes it a lot easier. :-) Steve (24 years ago, 26-Apr-01, to lugnet.robotics)
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| | Reloading cannons (was Re: Call me a Lego pureist if you will but...)
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(...) I believe you are right, but I still think this might be the best solution. Using a large diameter spindle would help. I know many of the US's wire-guided munitions pay out this way (they don't have the problem of reloading using the same (...) (24 years ago, 26-Apr-01, to lugnet.robotics)
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| | Re: Call me a Lego pureist if you will but...
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"Steven Lane" <Steveroblane@aol.com> wrote in message news:GCEo0r.L5v@lugnet.com... (...) i believe that with the string not being held at one end there would either be little or no twisting when the string was reeled in if spooled with an open end (...) (24 years ago, 27-Apr-01, to lugnet.robotics)
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| | Re: Call me a Lego pureist if you will but...
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(...) Mikes right winding the thread onto the spool neatly and keeping it neat and tight would be the vital factor for correct operation. Of course once the dart had returned and locked into place that would keep the thread tight on the spool. Steve (24 years ago, 29-Apr-01, to lugnet.robotics)
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