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Author Topic: New cannon video  (Read 762 times)

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Offline Grumpy_Old_Guy

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New cannon video
« on: December 27, 2005, 03:21:41 AM »
Hi All,
    I've uploaded a couple of new cannon videos
http://www.jacsport.com/cannons_and_other_stuff.htm
I kept them fairly small, so it should be possible to load them with dialup.
Both videos are in slow motion. For some reason I just can't resist doing it that way as the effect seems to "scale up" the cannon and mortar.
 The mortar is a one inch bore and for ammo I used a 1" long piece of round aluminum bar stock. I know mortar balls are supposed to be round, but it was just so easy to part off some round bar. Has anyone else experimented with aluminum and / or cylindrical shot?
John
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Offline GGaskill

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New cannon video
« Reply #1 on: December 27, 2005, 05:48:54 AM »
Depends if you count beer cans as cylindrical.  I have done pressure testing using cylindrical shot as it is easier to make extra heavy ones that way.
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GG
“If you're not a liberal at 20, you have no heart; if you're not a conservative at 40, you have no brain.”--Winston Churchill

Offline Kansas Boomer

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Video
« Reply #2 on: December 27, 2005, 11:05:41 AM »
Great videos Grumpy, loved the one with the computer.  Kansas Boomer
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Former Naval person, proud to have a Grandson serving in the U. S. Army.
There are no atheists in a landing craft!!!!

Offline Evil Dog

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New cannon video
« Reply #3 on: December 27, 2005, 11:19:28 AM »
Should have loaded the cannon with grape shot for the computer.
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Freedom is a well-armed lamb contesting that vote. - Benjamin Franklin (1759)

Offline threepdr

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What's that white stuff?
« Reply #4 on: December 28, 2005, 03:58:16 AM »
What is that white stuff?  Did you spread some kind of fireproofing around before you fired the cannons? :)

Thanks, fun videos!

Threepdr
Alabama
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Offline Grumpy_Old_Guy

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New cannon video
« Reply #5 on: December 28, 2005, 04:34:51 AM »
The white stuff is sound deadening. Muffles the sound of gunfire... When the temperature drops to -20C the cannon produces quite a different sound compared to warmer days (a much sharper crack).
Oops, I'd better convert celsius to the Confederate temp scale : 4 below :)
John
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