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Spudzilla Pro BMF9000 vid #3

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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Spudzilla Pro BMF9000 vid #3

Unread postAuthor: Budarooski » Sat Jul 18, 2009 8:33 pm

Enjoy.

-video link is dead-
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Unread postAuthor: Pyro Ninja » Sat Jul 18, 2009 9:11 pm

You certainly fixed it :) aha
Nice work.
Any improvements with changing the MAPP gas pressure?
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Unread postAuthor: Budarooski » Sat Jul 18, 2009 10:34 pm

We used the same psi for each shot; before I could start trying different values the cpu fan broke and the gun wouldn't fire.

I need to put in a new fan and hotter ignition for a faster response and better explosion.
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Unread postAuthor: Pyro Ninja » Sun Jul 19, 2009 4:31 am

Ahh yes, you did say that your fan died on you, but I failed to take note. Hopefully you get a new fan up and running soon so you can wreak more havoc on more inanimate objects with this beast.
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Unread postAuthor: far_cry » Sun Jul 19, 2009 6:55 am

oh my god you blow up a large (52" ??) lcd( plasma?)

you have a lot of mony i guss
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Unread postAuthor: jackssmirkingrevenge » Sun Jul 19, 2009 7:12 am

Nice bit of theatre, though you need heftier projectiles to do some real damage :)
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Unread postAuthor: inonickname » Sun Jul 19, 2009 7:48 am

far_cry wrote:oh my god you blow up a large (52" ??) lcd( plasma?)

you have a lot of mony i guss


He said that it was his friends and it was completely broken and wouldn't work again..so why not!
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Unread postAuthor: Budarooski » Sun Jul 19, 2009 9:04 am

far_cry wrote:oh my god you blow up a large (52" ??) lcd( plasma?)

you have a lot of mony i guss


Glad to see the video fooled someone. :lol:
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Unread postAuthor: Budarooski » Sun Jul 19, 2009 2:02 pm

jackssmirkingrevenge wrote:Nice bit of theatre, though you need heftier projectiles to do some real damage :)


What do you suggest? I'm open to try anything.
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Unread postAuthor: jagerbond » Sun Jul 19, 2009 3:42 pm

Budarooski wrote:
jackssmirkingrevenge wrote:Nice bit of theatre, though you need heftier projectiles to do some real damage :)


What do you suggest? I'm open to try anything.


http://www.spudfiles.com/forums/compound-rounds-from-sureshot-t18485.html

These will take care of your pesky TV. You'll see in the beginning of video the rounds are cutting clean through 6 layers of carpet.
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Unread postAuthor: Technician1002 » Sun Jul 19, 2009 4:37 pm

jagerbond wrote:
Budarooski wrote:
jackssmirkingrevenge wrote:Nice bit of theatre, though you need heftier projectiles to do some real damage :)


What do you suggest? I'm open to try anything.


http://www.spudfiles.com/forums/compound-rounds-from-sureshot-t18485.html

These will take care of your pesky TV. You'll see in the beginning of video the rounds are cutting clean through 6 layers of carpet.


With a larger bore, I was able to get a rolled up shirt through 2 layers of carpet. I didn't try thicker layers of carpet.
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Unread postAuthor: Budarooski » Sun Jul 19, 2009 5:23 pm

One area of improvement would be the spark. Although it works, there appears to be a split second delay in the firing and I'm thinking a "hotter" spark might lead to a faster, more powerful explosion. At least that's how it works with racecars and spark plugs.
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Unread postAuthor: jagerbond » Sun Jul 19, 2009 5:52 pm

Budarooski wrote:One area of improvement would be the spark. Although it works, there appears to be a split second delay in the firing and I'm thinking a "hotter" spark might lead to a faster, more powerful explosion. At least that's how it works with racecars and spark plugs.


I don't think a hotter spark is going to help much. If your getting ignition your probably OK... i suspect the Air- Fuel ratio is not quite dialed in. MAPP and Propane have a relatively narrow AF ratio and will be harder to ignite outside of the optimum AF band.

Of course our 30KV igniter would certainly get things fired up!

<a href="http://ultimatespudgun.com/product_info.php?cPath=39&products_id=219">30KV Igniter</a>
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Unread postAuthor: inonickname » Sun Jul 19, 2009 8:48 pm

Buda, there's been discussion and the spark is nothing. The amount of current/voltage (as long as the mix ignites) will not change power in any way, unless you are pumping enough current to form plasma from your electrodes.

Not bad :wink:
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Unread postAuthor: Budarooski » Sun Jul 19, 2009 9:17 pm

inonickname wrote:Buda, there's been discussion and the spark is nothing. The amount of current/voltage (as long as the mix ignites) will not change power in any way, unless you are pumping enough current to form plasma from your electrodes.

Not bad :wink:


Thanks! That just saved me a bunch of money and time tearing it apart to go with a hotter spark. Ironically, I just came from my garage inspecting the spark and was thinking to myself, "I have tons of spark!"

I finished fitting the new fan and will install it tomorrow...time to watch Weeds season 4 on blu-ray with my wife. :P

Once the fan is installed, I'll toy with various psi's.
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