omg why use a lathe?? just use pvc/copper pipe, nose cone plus finsabove 35mm is uncomfortable to machine on a small lathe
spudgun range, are we falling short?
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The idea is to use existing pipe for the body and machine the nose cone and fins, the latter would be sort of... on a lathePOLAND_SPUD wrote:omg why use a lathe?? just use pvc/copper pipe, nose cone plus fins
hectmarr wrote:You have to make many weapons, because this field is long and short life
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lol ramjet ammo - check the last two pages
http://www.dtic.mil/ndia/2004armaments/ ... n_COOP.pdf
http://www.dtic.mil/ndia/2004armaments/ ... n_COOP.pdf
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Comparing that to the Oto Melara Vulcano round actually ties in nicely with the scope of this thread.POLAND_SPUD wrote:lol ramjet ammo
[youtube][/youtube]
It avoids the weight and complexity of having on-board propulsion such as rocket assisted rounds or the ramjet rounds you linked to, but still achieves tremendous range - 70km in a ballistic trajectory. By adding guidance that would allow the projectile to glide, this would extend it even further.
The Nazis were w-a-a-a-a-a-ay ahead of their time:
hectmarr wrote:You have to make many weapons, because this field is long and short life
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2:00 - 2:12 -> I think they explain what I meantioned earlier as far as gliding ammo is concerned - it needs some sort of guidance
damn you JSR I though I found something interesting and then you post this
though I am pretty sure you find it even more fap worthy than I do
lol at first I wrote 'more fap worthy than me' but then I realised what would you do with that
damn you JSR I though I found something interesting and then you post this
though I am pretty sure you find it even more fap worthy than I do
lol at first I wrote 'more fap worthy than me' but then I realised what would you do with that
Children are the future
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And you criticize my spelling!POLAND_SPUD wrote:I think they explain what I meantioned earlier as far as gliding ammo is concerned
damn you JSR I though I found something interesting and then you post this
Got you! Fat fingers or Vodka?
As a bit of a tangent from the reccord setting ranges, something like this would be pretty amazing fired from some sort of canon
[youtube][/youtube]
Of course larger bore, lower velocity and lower acceleration on launch would be requisites. You'd probably have to start off very slow, a lot could go wrong.
Anyone got some FPV gear ?
[youtube][/youtube]
Of course larger bore, lower velocity and lower acceleration on launch would be requisites. You'd probably have to start off very slow, a lot could go wrong.
Anyone got some FPV gear ?
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I'm quite sure that a properly trimmed projectile will glide without the need for guidance. The problem is that once you introduce lift dependent flight, the projectile becomes much more susceptible to environmental factors like wind and air pressure, so realistic accuracy is not achievable without guidance.POLAND_SPUD wrote:2:00 - 2:12 -> I think they explain what I meantioned earlier as far as gliding ammo is concerned - it needs some sort of guidance
He has the "but I'm not a native speaker! *hic*" defenceAnd you criticize my spelling!
Awesome but it seems like a waste of RC gear for such a short flight.As a bit of a tangent from the reccord setting ranges, something like this would be pretty amazing fired from some sort of cannon
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Hey I am a Pole but I haven't drunk anything (yet)He has the "but I'm not a native speaker! *hic*" defence
Sure but if you think of it you might as well put two servos on a projectileAwesome Very Happy but it seems like a waste of RC gear for such a short flight.
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Lookie what arrived from down under
Pretty compact... my only concern is the coil, apparently it cannot be potted.
Dewey, help? I've never really put a circuit together before, any basic advice?
Pretty compact... my only concern is the coil, apparently it cannot be potted.
Dewey, help? I've never really put a circuit together before, any basic advice?
- Attachments
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- The supplier suggested this as a simpler circuit, opinions? He supplied the parts to make it
- simplercircuit.PNG (8.77 KiB) Viewed 2417 times
hectmarr wrote:You have to make many weapons, because this field is long and short life
Where to start?
Assuming you have a soldering iron of 25 to 50 Watt and the correct rosin core electronic solder (60-40 or 63-37) of about 1mm diameter then please start reading these links.
First: http://www.mil.ufl.edu/5666/6270/6.270B ... npter3.pdf
Second: http://www.1728.org/resisclr.htm
I recommend doing the coil as the last item to solder.
Build it to what the instruction sheet shows.
Post close up pictures of resistors or other components if you have problems with them.
Here is some more information based on parts list.
http://talkingelectronics.com/projects/ ... acker.html
PARTS LIST
1 - 220R (Red, Red, Brown, Gold)
1 - 330R (Orange, Orange, Brown, Gold)
2 - 1k (Brown, Black, Red. Gold)
1 - 47k (Yellow, Violet, Orange, Gold)
1 - 220k (Red, Red, Yellow, Gold)
1 - 5p6 ceramic
1 - 10p ceramic
1 - 39p ceramic
1 - 1n ceramic
1 - 22n ceramic
1 - 10u 16v PC mount electrolytic (Note Polarity!)
1 - 22u 16v PC mount electrolytic (Note Polarity!)
2 - BC 547 transistors (Note Polarity!)
1 - BC 557 transistor (Note Polarity!)
1 - 5 turn, 3mm dia enamelled wire (Put in last!)
Assuming you have a soldering iron of 25 to 50 Watt and the correct rosin core electronic solder (60-40 or 63-37) of about 1mm diameter then please start reading these links.
First: http://www.mil.ufl.edu/5666/6270/6.270B ... npter3.pdf
Second: http://www.1728.org/resisclr.htm
I recommend doing the coil as the last item to solder.
Build it to what the instruction sheet shows.
Post close up pictures of resistors or other components if you have problems with them.
Here is some more information based on parts list.
http://talkingelectronics.com/projects/ ... acker.html
PARTS LIST
1 - 220R (Red, Red, Brown, Gold)
1 - 330R (Orange, Orange, Brown, Gold)
2 - 1k (Brown, Black, Red. Gold)
1 - 47k (Yellow, Violet, Orange, Gold)
1 - 220k (Red, Red, Yellow, Gold)
1 - 5p6 ceramic
1 - 10p ceramic
1 - 39p ceramic
1 - 1n ceramic
1 - 22n ceramic
1 - 10u 16v PC mount electrolytic (Note Polarity!)
1 - 22u 16v PC mount electrolytic (Note Polarity!)
2 - BC 547 transistors (Note Polarity!)
1 - BC 557 transistor (Note Polarity!)
1 - 5 turn, 3mm dia enamelled wire (Put in last!)
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Cheers!
Especially for translating the colour coding on the resistors...
Silly question, should I strip off the enamel at the point where I solder the coil?
Especially for translating the colour coding on the resistors...
Silly question, should I strip off the enamel at the point where I solder the coil?
hectmarr wrote:You have to make many weapons, because this field is long and short life
Definitely yes.
The color code was easy to remember even when I learned it as teenager.
You should easily remember this too.
It was used by the US miltary Electronic instructors during WWII.
Bad-------Black
Boys------Brown
Rap#-----Red
Our-------Orange
Young----Yellow
Girls------Green
But-------Blue
Violet----Violet
Gives-----Grey
Willingly-White
The color code was easy to remember even when I learned it as teenager.
You should easily remember this too.
It was used by the US miltary Electronic instructors during WWII.
Bad-------Black
Boys------Brown
Rap#-----Red
Our-------Orange
Young----Yellow
Girls------Green
But-------Blue
Violet----Violet
Gives-----Grey
Willingly-White