My RR6, rotating magazine . 6 shots

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
ijahman
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Mon Nov 30, 2009 4:36 pm

Hello, sorry for my bad english,
My RR6 is made with pvc
ratio: 1.08 - using 5.4% vol. butane (refill lighters)
speed recharging
firing 45mm bouncing ball
3dsmax developped for best "sizing" into all elements.
electronic sparking
lib developped by me.
chamber 55 CI canon 50 CI
a valve (see it on 4° photoshoot on top left) made by me, is hand opened ( a spring is for close automatically )
the butan gaz is reguled and mixed with a "venturi" system,
venturi system example here : http://www.cegep-ste-foy.qc.ca/freesite ... enturi.swf
or this, working with venturi effect: http://www.campingaz.com/FR/images/Prod ... /23814.jpg

the venturi is optional, but it make a better mix.

the important point is : the flow of the butane is in adequation with the flow of the fan, reguled with the little faucet.
this make a perfect and permanent reguled mix.


VIDEOS:


<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i91.servimg.com/u/f91/11/91/50/07/img_0213.jpg" border="0" alt="Image hébergée par servimg.com"></a>
<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i61.servimg.com/u/f61/11/91/50/07/3dsmax10.jpg" border="0" alt="Image hébergée par servimg.com"></a>
<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i91.servimg.com/u/f91/11/91/50/07/img_0214.jpg" border="0" alt="Image hébergée par servimg.com"></a>
<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i91.servimg.com/u/f91/11/91/50/07/multi10.jpg" border="0" alt="Image hébergée par servimg.com"></a>
<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i91.servimg.com/u/f91/11/91/50/07/img_0217.jpg" border="0" alt="Image hébergée par servimg.com"></a>
Last edited by ijahman on Sun Aug 01, 2010 1:50 pm, edited 9 times in total.
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JDP12
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Mon Nov 30, 2009 4:43 pm

thats pretty sweet! nice work.. can you provide us with a little more detail on it?
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jackssmirkingrevenge
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Mon Nov 30, 2009 4:54 pm

Very nice, I love the overall look!

Shame the magazine is not self-indexing though, maybe you could add a spring and detent? After executing such a fine piece of work it shouldn't be a big deal.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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POLAND_SPUD
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Mon Nov 30, 2009 4:57 pm

wow... I've got to second ilovetoblowtinghsup... we want more info

ohh and welcome to spudfiles!!
Children are the future

unless we stop them now
ijahman
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Mon Nov 30, 2009 5:02 pm

thanks for your "greatings"? sorry but my english is bad, please if you write to me, (i use reverso.net to translate your text), reverso need a perfect text and not abreviation. sorry for this unconvenience.

i've perfectly note that you want more info .. i update the first post
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Mon Nov 30, 2009 5:33 pm

Looks great. I'd like to see how it works. Any chance of a video?
ijahman
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Mon Nov 30, 2009 5:37 pm

video is on the first post, on below of the post. ;)

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starman
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Mon Nov 30, 2009 9:11 pm

WOW! Beautifully done. Very unique design for a combustion. Your fueling and ignition system seems very consistant...the rotary loader and breach setup looks painfully simple to use for what I am sure required significant engineering effort.

It looks relatively lightweight and the layout of everything is really well done. Exceptional cannon!!

Welcome to Spudfiles!
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CS
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Mon Nov 30, 2009 10:49 pm

Great work, beautiful balance of implementation.

With the 360 degree flow out the chamber (4 elbows) surprised spent fuel/oxygen doesn't have a noticeable effect on consistency. I can see a lot of designer deduction took place, backyard builder respect.

edit:
http://www.spudfiles.com/forums/eclipse ... t7879.html
http://www.spudfiles.com/forums/40mm-ru ... 18188.html
http://www.spudfiles.com/forums/first-p ... 14348.html
http://www.spudfiles.com/forums/the-ecl ... t6737.html

^You should like this.
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ijahman
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Tue Dec 01, 2009 12:53 am

@pimpmann22: in the red box: this black box contains the electronic ignitor and battery, you can see the red wires on right, going into chamber.

thanks
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jackssmirkingrevenge
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Tue Dec 01, 2009 1:00 am

Further to my suggestion on making the magazine automatic, this is how the ratchet mechanism on my Daystate magazine works:

Image
hectmarr wrote:You have to make many weapons, because this field is long and short life
ijahman
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Sun Jan 24, 2010 4:39 pm

Hi all ,

A new video of my RR6:
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jackssmirkingrevenge
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Sun Jan 24, 2010 4:42 pm

Just one shot? How a video of a magazine dump ;)
hectmarr wrote:You have to make many weapons, because this field is long and short life
ijahman
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Sun Jan 24, 2010 4:45 pm

ok, i notice that. it's for the next time.
VirusX
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Sat Feb 20, 2010 2:02 pm

Hey, Nice combustion cannon you got there!

Do you use a butane refill cartridge for lighters or a normal propane bottle?

Could you explaine how the "venturi system" works or do you know a good manual? Your link is no longer available.
I'm sorry, my English is not so good but I'll try my best!
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