A place for general potato gun questions and discussions.
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POLAND_SPUD
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Mon Nov 19, 2007 6:31 pm
3" big is more like 1.8 kg....
but anyway
I don't think it makes sense to fire a 1.4 kg steel ball at almost point blank range
casting it from lead would be much better idea for your gun DYI - lead is denser than steel and it would deform more on impact... Do think about reducing chance of any ricochet
Your brain being splashed by a ricochet would make your clip very popular on youtube :violent2:
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f.c
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Mon Nov 19, 2007 6:31 pm
i made a sort of hop up system. look up modded bbmg its a bbmg i made with a hop up system of sorts.
can i be a sasquatch ?
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Ragnarok
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Mon Nov 19, 2007 6:43 pm
POLAND_SPUD wrote:3" big is more like 1.8 kg....
Which would apply only if it were really 3" in diameter. It's 2 <sup>3</sup>/<sub>4</sub>" (7 cm) IIRC ,which works out pretty much bang on 1.4 kilos.
Does that thing kinda look like a big cat to you?
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DYI
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Mon Nov 19, 2007 7:47 pm
Lead ball mass = radius (in cm) x radius x radius x pi x 1.333 x density of lead in gm/cm^3 (~11)
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
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Ragnarok
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Mon Nov 19, 2007 8:03 pm
It's 11.34 g/cm<sup>3</sup>* IIRC, and also, that would be better done as <sup>4</sup>/<sub>3</sub> rather than 1.333.
* I know a lot of densities off the top of my head.
Does that thing kinda look like a big cat to you?
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jackssmirkingrevenge
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Mon Nov 19, 2007 11:45 pm
Ragnarok wrote:It's part of a crane's summat or other, and weighs in at 1.4 kg if I remember right from the last time JSR lamented his lack of a 3" pneumatic.
Correct, though you make it sound like I complain I have nothing to fire it with every week on a regular basis
DYI, I'll hang on to it for now, the cannon to launch it is still in the works - maybe eventually at a 45 degree angle it will make it across the Atlantic
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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rna_duelers
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Tue Nov 20, 2007 1:18 am
I got a few large Steel bearings,one is stainless and the other is plain steel I'll see how big they are and get a picture up and the race is on jack to see who can get one across there continent first!I think I'm at a bit of a disadvantage though...
The Stainless steel ball is 1.2kg,the larger non stainless ball is just shy of 2.2kg and I got them from my uncle who owns a machining,milling,engineering company Leussink Engineering and he gave these to me when he showed me the company one time when I was younger.Thats the end of that chapter.
Here is there website if you wunna have a read up
http://www.leussink.com.au/
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- Blury I Know,and the Turkey bottle was the only size reference I had at the time.NOT DRUNK!
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jackssmirkingrevenge
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Tue Nov 20, 2007 2:14 am
Blury I Know,and the Turkey bottle was the only size referecne I had at the time.NOT DRUNK!
pull the other one
and I just have to get this one out of the way quickly *sounds of pink napalm coated pachyderms charging* nice pair of balls
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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Novacastrian
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Tue Nov 20, 2007 2:20 am
and I just have to get this one out of the way quickly, nice pair of balls
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.png)
[/quote]
Awwwww
Seriously, what size chamber would one need for a 3" ball?
Even better, the size of the "piston" would be remarkable!
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America, the greatest gangster of all time. With 200 million odd foot soldiers at it's whim and call.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
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Ragnarok
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Tue Nov 20, 2007 2:35 am
@JSR: I could see a "balls of steel" joke coming there. I wasn't quite right, but I was damn close.
Does that thing kinda look like a big cat to you?
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jackssmirkingrevenge
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Tue Nov 20, 2007 3:19 am
Ragnarok wrote:@JSR: I could see a "balls of steel" joke coming there. I wasn't quite right, but I was damn close.
The humour remains adolescent and is becoming predictable, I need to start moderating myself. At least, props to rna_duelers for not rotating that liquor bottle by 90 degrees to complete the phallic allusion
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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rna_duelers
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Tue Nov 20, 2007 4:21 am
Ohh how easily it can be done
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.I won't do it but otherwise you might literally start to feel 14 again...Is that a good thing or. . . .