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Big Mutha Chucker

Built a combustion cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Big Mutha Chucker

Unread postAuthor: frankrede » Sun May 06, 2007 12:38 am

I'm not sure If I am submitting my cannon right so whatever

This one packs a punch!
Chamber:26" long 4" sch-80 chamber
barrels:10ft gsleeved golfball barrel/5 ft sleeved golfball barrel/5ft tennis ball barrel/silenced 1.5" barrel.
ignition:single spark point pzeizo electric ignition integrated into a easy hold handle
fueling:metered propane w/ regulator.
venting:1.25 ball valve for quick venting w/ modified camping fan rigged to fan controller box


<a href="http://photobucket.com" target="_blank"><img src="http://i30.photobucket.com/albums/c325/redensekjf/05-05-07_2102.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a><br>
<a href="http://photobucket.com" target="_blank"><img src="http://i30.photobucket.com/albums/c325/redensekjf/05-05-07_2058.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a><br>
<a href="http://photobucket.com" target="_blank"><img src="http://i30.photobucket.com/albums/c325/redensekjf/05-05-07_2057.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a><br>
<a href="http://photobucket.com" target="_blank"><img src="http://i30.photobucket.com/albums/c325/redensekjf/05-05-07_2059.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a><br>
<a href="http://photobucket.com" target="_blank"><img src="http://i30.photobucket.com/albums/c325/redensekjf/05-05-07_2101.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a><br>
Tennis ball barrel
<a href="http://photobucket.com" target="_blank"><img src="http://i30.photobucket.com/albums/c325/redensekjf/05-05-07_2106.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>

<br>
10ft sleeved golfball barrrel
<a href="http://photobucket.com" target="_blank"><img src="http://i30.photobucket.com/albums/c325/redensekjf/05-05-07_2108.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>
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Unread postAuthor: frankrede » Sun May 06, 2007 1:34 am

Could a moderator post this right for me?
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Unread postAuthor: experament-u2 » Sun May 06, 2007 1:37 am

thats a sweet gun
and i love the golf ball barrel :D
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Unread postAuthor: SpudBlaster15 » Sun May 06, 2007 2:15 am

This gun looks very nice. I do have a few suggestions, however.

1) Add a barrel support (or 2, which would be the better option) to prevent the long barrel from flexing upward and snapping the elbows off upon firing. Adding a ring support would allow the barrel to be slid forward and ammo breech loaded without detaching the whole thing.
2) Cam locks or a union for breech loading.
3) The 1.25" vent valve seems a little small, you might want to use a larger ball valve.

Other than that, I like it.
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Unread postAuthor: frankrede » Sun May 06, 2007 11:47 am

SpudBlaster15 wrote:This gun looks very nice. I do have a few suggestions, however.

1) Add a barrel support (or 2, which would be the better option) to prevent the long barrel from flexing upward and snapping the elbows off upon firing. Adding a ring support would allow the barrel to be slid forward and ammo breech loaded without detaching the whole thing.
2) Cam locks or a union for breech loading.
3) The 1.25" vent valve seems a little small, you might want to use a larger ball valve.

Other than that, I like it.

Haha ya, I though about adding a barrel support, I'm still not sure what I am going to use, but I will definetly make one.
And as for the ball valve I only had 6$ left in my gun fund so I got the best I could.
And a question, How did you mount your ball valve on your cannon?
PM it to me if you can
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Unread postAuthor: frankrede » Sun May 06, 2007 6:11 pm

*testing today*
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Unread postAuthor: sjog » Sun May 06, 2007 6:44 pm

Flush bushing, it looks like for vent valve. That's what I did ,makes for solid
end for gun. Clean out caps can be a pain/weak link.
No, not sure now about vent end of gun.( Just looked again )
Any way , barrel support. Since you have a vent like mine, It could be done
the same way I did.<img src="http://i116.photobucket.com/albums/o12/sjogun/th_IMG_0249.jpg" border="0">
That is 6"x1/2" iron nipple between two fittings. The fittings are ground out on the inside to slide over barrel and stub on valve. The fittings are 2"x2"x1/2" 1 1/2"x1 1/2"x1/2"
My support works real well. It slides on easily but does'nt twist.
Nice gun you have there!
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Unread postAuthor: frankrede » Sun May 06, 2007 6:58 pm

Ya, as soon as my dad gets home I get test it.
I am actually hoping the cleanount will blow, so I can sucker him in to buy me a 2" ball valve and a 4" by 2" threaded bushing for the cleanest look ever.

And as for a barrel support, I might do one similiar to your except I don't have cam locks:(
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Unread postAuthor: SpudBlaster15 » Sun May 06, 2007 6:59 pm

frankrede wrote:How did you mount your ball valve on your cannon?


I drilled a 2" hole in a cleanout cap, then slid a 2" male threaded adapter through the back of the cap, then screwed the 2" ball valve onto the protruding threads. It is a very solid setup.
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Unread postAuthor: bboymatty » Sun May 06, 2007 8:08 pm

very nice man great cannon! i like the ability for you to change barrels, plus the onboard propane. Great work once again and good luck in the comp!
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Unread postAuthor: frankrede » Sun May 06, 2007 10:27 pm

Oh god, I went to install a camping fan today, And it was a disaster
I ended up ruining 2 fans.
So I think sometime next weekend I'll go out and by a computer fan and install that,
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Unread postAuthor: SpudBlaster15 » Sun May 06, 2007 10:37 pm

I am going to assume that you overloaded the fans with voltage and/or current. In my experience, those fans cannot handle more than 4 AA batteries for extended periods of time. Anything with a higher voltage or current output, and you will fry the fan.

Personally, I prefer computer fans, simply because they have contained blades, and are already pre-wired to be switched on and off from outside the chamber. With the right power supply, they will perform just as well as a camping fan.

I suggest a 60mm size fan, because when used in a 4" chamber, they seem to mix the air and fuel quicker than an 80mm fan due to the greater potential to flow air around themselves.
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Unread postAuthor: frankrede » Sun May 06, 2007 11:00 pm

SpudBlaster15 wrote:I am going to assume that you overloaded the fans with voltage and/or current. In my experience, those fans cannot handle more than 4 AA batteries for extended periods of time. Anything with a higher voltage or current output, and you will fry the fan.

Personally, I prefer computer fans, simply because they have contained blades, and are already pre-wired to be switched on and off from outside the chamber. With the right power supply, they will perform just as well as a camping fan.

I suggest a 60mm size fan, because when used in a 4" chamber, they seem to mix the air and fuel quicker than an 80mm fan due to the greater potential to flow air around themselves.

The fans were fine, but I broke them, trying to mount them.
And thanks for the size, but how well does 60mm fit in sch-40? I have sch-80 so trimming isn't that big of deal.
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Unread postAuthor: SpudBlaster15 » Sun May 06, 2007 11:07 pm

A 60mm fan requires a tower mount in 4" Sch 40 pipe, and there is a fair amount of space around it. It would also require a tower mount in Sch 80, which is a good thing. You want space around it.
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Unread postAuthor: frankrede » Mon May 07, 2007 12:59 am

Tower mount?
And does the name of this cannon sound good?
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