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projectiles 1

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Unread postAuthor: spud-tom » Fri Sep 14, 2007 6:23 pm

does anybody know how to keep a marble in the barrel. i have a problem with the marble falling out while i'm about to shoot. does anyone know any ideas for a normal marble (not a metal baring using a magnet)
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Unread postAuthor: potato launcher » Fri Sep 14, 2007 6:24 pm

you could put a little tape on the marble
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Unread postAuthor: MrCrowley » Fri Sep 14, 2007 6:25 pm

You can put toothbrush bristles in the barrel, just glue them in, or put a very small amount of epoxy in front of where the marble usually lies, just enough epoxy to cause enough friction to stop the marble rolling forward.

Edit: Unless the tape was specially put on the marble to stabilize it in the barrel to stop it spinning therefore stop it curving when it leaves the barrel like all marbles do, the tape will really screw up its flight path and its velocity a bit.
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Unread postAuthor: potato launcher » Fri Sep 14, 2007 6:36 pm

true crowley the tooth brush brissels is a good idea
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Unread postAuthor: rna_duelers » Fri Sep 14, 2007 7:08 pm

Get a perfect fitting barrel is another way,I have a PVC barrel on one of my guns that made for Electrical wires and it fits marbles perfect,they won't roll out by themselves but your can blow them out easily.Perfecto.

Just put some tissue wadding in front and behind the marble.
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Unread postAuthor: jimmy101 » Sat Sep 15, 2007 10:51 am

Wrap the marble in tissue paper?
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Unread postAuthor: potato launcher » Sat Sep 15, 2007 4:21 pm

no he means use the tissue as wadding in the front and in the back not wraping the tissue paper around the marble
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Unread postAuthor: jimmy101 » Sun Sep 16, 2007 9:20 am

No, at least I meant to wrap the marble in the tissue. Much easier than putting tissue in front and behind the marble.

If the tissue is small and wrapped losely it'll come off the round soon after it leaves the barrel.
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Unread postAuthor: jackssmirkingrevenge » Sun Sep 16, 2007 9:35 am

you should cut a disc of tissue and use it as a patch, the same as the do with cloth in muzzleloaders:

[youtube]http://www.youtube.com/watch?v=_jU36sH8H-0[/youtube]
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