Basketball Cannon

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.
Post Reply
User avatar
PCGUY
Owner
Owner
United States of America
Posts: 1434
Joined: Wed Aug 18, 2004 10:54 pm
Location: Illinois
Has thanked: 2 times
Been thanked: 26 times
Contact:
Contact PCGUY

Sun Feb 13, 2005 12:10 am

<div align="center">BASKETBALL CANNON

Provided By - DR

For ease of handling, the Chamber portion of the 10" C-900 pipe on this one is only 34" long. The Barrel portion of the pipe is 48" long.- (not including the belled end) This will give me an approximate 0.7:1 ratio.

The I.D. of the 10" pipe is approx. 25cm (9.8425"). - 2,586.9 cubic inches!! -It falls short of my first one which had a chamber volume of 3,195.5 cubic inches.

I'm thinking of buyind a mattress inflator/deflator to vent the Chamber, because the cast-iron end cap will be bolted on.

If anyone has any better ideas on how to vent 6,500 cubic inches of pipe, I would be very grateful!

I should have this ready yo fire by tomorrow evening, but I'll definitely have it readt for the weekend. The hardest part of the whole build was trying to cut the end of the pipe evenly. (all by hand with a miter saw) The flared end was cut with a jigsaw, and finished by hand.

Provided By - DR </div>
Attachments
222.jpg
722.jpg
722.jpg (17.14 KiB) Viewed 10995 times
822.jpg
822.jpg (14.45 KiB) Viewed 10995 times
922.jpg
Endcap: TYLER 10&amp;quot; Cast-Iron
Endcap: TYLER 10&quot; Cast-Iron
BBCComplete1.JPG (10.82 KiB) Viewed 10995 times
BBCComplete2.JPG
BBCComplete2.JPG (11.04 KiB) Viewed 10995 times
Bolt: 3/4&amp;quot; x 4-1/2&amp;quot; T-bolt These bolts had to be torqued to 75 ft. lbs. I started at 20, and worked my way up in 5lb. increments. The bolts had to be torqued in a clockwise pattern. - what a workout!
Bolt: 3/4&quot; x 4-1/2&quot; T-bolt These bolts had to be torqued to 75 ft. lbs. I started at 20, and worked my way up in 5lb. increments. The bolts had to be torqued in a clockwise pattern. - what a workout!
BBCComplete3.JPG (6.06 KiB) Viewed 10995 times
Buisness End: 1/2&amp;quot; diameter holes were drilled 120 degrees apart, so that launcher could be tied to the ground like a tent-pole. I used about 16 feet of 5/16&amp;quot; dia. Nylon rope for each hole. - So far, my only plan is to launch in a vertical position, so these will suffice. - If this end-cap works well, I'll simply make a support to rest the barrel end on, so that I can launch at different angles as well. The rope could then be used to keep the barrel from jumping when fired. - This whole assembly is pretty heavy by itself though, so I don't think that recoil will be a problem!
Buisness End: 1/2&quot; diameter holes were drilled 120 degrees apart, so that launcher could be tied to the ground like a tent-pole. I used about 16 feet of 5/16&quot; dia. Nylon rope for each hole. - So far, my only plan is to launch in a vertical position, so these will suffice. - If this end-cap works well, I'll simply make a support to rest the barrel end on, so that I can launch at different angles as well. The rope could then be used to keep the barrel from jumping when fired. - This whole assembly is pretty heavy by itself though, so I don't think that recoil will be a problem!
BBCComplete4.JPG (9.57 KiB) Viewed 10995 times
Last edited by PCGUY on Mon Jun 12, 2006 6:48 pm, edited 1 time in total.
Yes, I am the guy that owns & operates SpudFiles (along with our extremely helpful moderators).
Top
User avatar
theexp
Specialist
Specialist
Posts: 157
Joined: Sun Oct 03, 2004 3:19 pm
Location: Chapel Hill NC
Contact:
Contact theexp

Sun Feb 13, 2005 7:40 pm

That thing is a fricken Beast...
I love it.
Bigger is better
You should get a 120mm fan insted tho.
There is a fan called the tornado that moves like 119 cubic ft of air a min.

http://www.newegg.com/app/ViewProductDe ... 613&depa=0

What do you use for a fuel :?:

Have you shot anything yet :twisted: :twisted:
Top
p8ntoer
Private
Private
Posts: 8
Joined: Tue Apr 26, 2005 8:24 pm

Tue Apr 26, 2005 8:32 pm

Does that seriously heave a basketball a consideringly great amount of distance? I'd love to see it. It seems as the basketball would be way too heavy to even go 5 feet...Well, it all depends on the fuel you use. Cool!
Top
spudshot
Sergeant
Sergeant
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am

Wed Apr 27, 2005 5:56 pm

he uses metered propane, and a basket ball wouldnt be that heavy, and remember you're talking to DR, the master hybrid man, i believe he's said he shot a bean can full of concrete through a block wall out of his 4" hybrid before
Image
Top
darthtator
Private 2
Private 2
Posts: 33
Joined: Mon Jul 04, 2005 1:45 pm
Location: Arizona

Mon Aug 01, 2005 7:17 pm

Thats pretty amazing..... Let us know when theres any damage pics or videos of this monster!!!
Your hands can't hit what your eyes can't see, float like a butterfly sting like a bee. *Ali*
Top
spudshot
Sergeant
Sergeant
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am

Mon Aug 01, 2005 7:53 pm

there were pics and i think video on spudtech at one time.
Image
Top
townbomber_01
Private 2
Private 2
Posts: 28
Joined: Tue Jul 12, 2005 10:39 pm
Location: australia,nsw,sydney

Wed Aug 03, 2005 1:35 am

u would proberly have to use the whole bottle of propane
Top
User avatar
boilingleadbath
Staff Sergeant 2
Staff Sergeant 2
Posts: 1635
Joined: Sat Mar 12, 2005 10:35 pm
Location: Pennsylvania, USA

Wed Aug 03, 2005 1:48 am

Oh, come on... it's only 10 times bigger than your typical launcher...
Top
User avatar
Hal0 x
Private
Private
Posts: 6
Joined: Tue Aug 23, 2005 1:25 pm

Tue Aug 23, 2005 1:59 pm

Thats awesome man, although it does look a little big and heavy but sure it fires well with all that work
Top
User avatar
toza
Private 3
Private 3
Posts: 50
Joined: Wed Oct 05, 2005 4:12 am
Location: victoria,australia

Sun Oct 16, 2005 7:05 am

wow :shock: thats frigin huge i've neva seen anything like it the endcap loks reaalll heavy duty and i'm surprised u can even buy pipe that thick! it must be heavy to lug around how far does it fire?

its a great acheivment altogether u did well
AMAZING! :D
Top
User avatar
ƒlying$pud
Private 2
Private 2
Posts: 36
Joined: Tue Oct 04, 2005 2:48 am

Wed Oct 19, 2005 12:29 am

How long did it take for you to build the whole thing including design time? its awesome by the way. you should shoot have shots at a basketball hoop from ages away :) :)
Top
cardinals08
Specialist 2
Specialist 2
Posts: 270
Joined: Thu Dec 22, 2005 5:07 pm

Fri Dec 23, 2005 2:48 pm

that is huge, I would love to see it fire some time.
Top
User avatar
nicholai
Specialist 3
Specialist 3
Posts: 349
Joined: Wed Jan 04, 2006 4:18 pm
Location: Maine
Contact:
Contact nicholai

Wed Feb 22, 2006 9:13 pm

wow thats some oddball pipe, where the hell did you find that? id love to find a cheap supplier for that...
Image
Top
User avatar
GhostMonkey
Private 2
Private 2
Posts: 26
Joined: Fri Feb 10, 2006 11:48 pm

Wed Feb 22, 2006 11:18 pm

ok ... DANG! THAT IS ONE CRAZY CANNON! it'd probably like a cannon ball if you could fire it fast enough ... dang ... you got some serious skills ... or just too much time to spend ... or both ... but still ..>DANG<!!!!!!!!!!!!

ghostmonkey
Top
DOGBRAIN
Recruit
Recruit
Posts: 1
Joined: Tue Feb 28, 2006 11:37 am

Tue Feb 28, 2006 12:47 pm

nicholai wrote:wow thats some oddball pipe, where the hell did you find that? id love to find a cheap supplier for that...
PIPE IS AVAILABLE FOR ABOUT $13.00 PER FT. AT WATERWORKS SUPPLIERS. BE CAREFUL, THAT PIPE CRACKS FROM IMPACT.]
Top
Post Reply

Return to “Combustion Cannons”