The Official High-Speed Camera Thread

Meaningful discussion outside of the potato gun realm. Projects, theories, current events. Non-productive discussion will be locked.
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jackssmirkingrevenge
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Thu Aug 12, 2010 7:10 pm

haha! love the idea, great stuff as always :D
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Insomniac
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Fri Aug 13, 2010 1:38 am

It was actually an accident... The cards were meant to stay up, but they started to fall so I quickly aimed and fired before they all did... I bumped the tripod with my hand which is why the camera shook... the timing makes it look like it's the awesome power behind the projectile which does it :D
I wonder how much deeper the ocean would be without sponges.
Right now I'm having amnesia and deja vu at the same time. I think I've forgotten this before.

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Zeus
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Fri Aug 13, 2010 7:03 am

I watched my way through almost all of these videos, a very well spent two hours.

Might have to get a high speed one day.

After the handheld radio, drillpress, lathe, and milling machine.
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SpudFarm
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Fri Aug 13, 2010 9:02 am

[youtube][/youtube]

Dissapointingly slow 516g slug shot at 7x against a 25L can of water.
I love hydrostatic shock :D

The low velocity is probably due to the burst disk not bursting. It just slips halfway out and stays there and restricts flow.
I am waiting for a new "American spec" union though :)
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jackssmirkingrevenge
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Fri Aug 13, 2010 12:58 pm

Shitty willy!

:shock:

Your "slow" slug is still carrying almost 10,000 ft/lbs, that is NOT disappointing ;)
hectmarr wrote:You have to make many weapons, because this field is long and short life
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SpudFarm
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Fri Aug 13, 2010 4:30 pm

Lol, that expression made me laugh xD

It is disappointing when you expect something around 17.000ft/lbs.. But I tried five more times to do another shot but I could not get ignition. Probably my fuel gauge that is broken so it might have been an extremely bad mix to.

Still, it could be worse :D
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Fri Aug 13, 2010 5:01 pm

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Last edited by SpudBlaster15 on Thu Jul 15, 2021 1:27 am, edited 1 time in total.
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SpudFarm
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Sat Aug 14, 2010 2:36 am

SpudBlaster15 wrote:Maybe you could try switching to a volumetric metering system. :D :lol:
Stop mocking -_-
Volumetric systems is not entirely universal, that is the main reason I use manometric metering. I can fuel a chamber the size of a plane just as easy as I fuel a pill bottle.

It was not a suprise that the gauge broke really (Haven't checked the ignition yet) since it was a 15USD one that didn't have any listed accuracy. On top of that I decided to reasemble my cannon on friday 13 :D
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Sat Aug 14, 2010 3:27 am

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Last edited by SpudBlaster15 on Thu Jul 15, 2021 2:00 am, edited 1 time in total.
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jackssmirkingrevenge
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Sat Aug 14, 2010 3:34 am

Fair enough, but I certainly am NOT disapoint, if anything more inspired to go down the hybrid route :)
hectmarr wrote:You have to make many weapons, because this field is long and short life
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SpudFarm
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Sat Aug 14, 2010 4:24 am

Ah, that's most likely what did it in. :lol:

Luckily, I didn't have to work on any cannons today, otherwise I would have cursed myself as well...


Hehehe!
Fair enough, but I certainly am NOT disapoint, if anything more inspired to go down the hybrid route :)
Well, I guess it is pretty good for a 7x mix. And the fact that I am inspiring you to build hybrids inspires me to continue :)

Edit: Is there any way I can upload my video files so you can download it and watch it in higher quality/frame by frame?
It is interesting to see some stuff that repeats itself on the same targets. When shooting at those containers I used for the water shot there is allways a smoke ring forming at the moment the projectile impacts etc.
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Ragnarok
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Sat Aug 14, 2010 4:47 am

SpudFarm wrote:Edit: Is there any way I can upload my video files so you can download it and watch it in higher quality/frame by frame?
You mean different to how it is now?

I love Firefox Download Helper. :D
Does that thing kinda look like a big cat to you?
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SpudFarm
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Sat Aug 14, 2010 4:52 am

I love Firefox Download Helper.
I think that some frames is lost after uploading to youtube. I think they compress it to 25 frames/sec while the raw file is 29frames/sec.
It is also better quality on the raw files :)
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Ragnarok
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Sat Aug 14, 2010 5:15 am

SpudFarm wrote:I think that some frames is lost after uploading to youtube.
Actually, no. The frame rate of the MP4 file is virtually unchanged from the original. Your file is 29.9 frames a second. Some are 24, some are 25, some are 30 - same as they were before.

Quality <s>may</s> will change (to some degree), but I imagine a lot of the compression losses may be on your end when you compiled the file.

(That said, not everyone uses Firefox Download Helper. And some people are idiots. The two may occasionally correlate in some way.)
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jor2daje
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Sat Aug 21, 2010 4:41 pm

Hey guys been I while since Ive posted a highspeed shot, but today I was machining a bit of hdpe thats going to be a vortex block, and decided to film a little. I think it came out pretty cool so expect more with different materials, tools, and cuts.

[youtube][/youtube]
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