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Superna- 2" Piston Valved Golf Ball Gun WITH DAMAGE

Built a pneumatic 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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Unread postAuthor: Technician1002 » Fri Sep 17, 2010 5:04 pm

I'll take that beast and the ABS test cannon. I'll be fun to compare them side by side with golf balls and paper towel wadding in the 2 inch barrels. Yes, I'll be taking the large one, the ABS cannon and the Marshmallow cannon. I'm also taking a GPS. I'll mark all the shots with the GPS. I'm heading to the hardware store now for sprinkler flags. :D 2500 feet of clear field for testing. I already know the range of water bottles and tennis balls. Time to find out how far golf balls go.
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Unread postAuthor: Gun Freak » Fri Sep 17, 2010 5:57 pm

Sounds awsome, can't wait for the results... my video might have to wait until tomorrow, because I can't find a camera man yet, but there is still a chance... if not tonight, then definitely tomorrow. Good lighting in the morning!
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Unread postAuthor: Gun Freak » Sat Sep 18, 2010 3:51 pm

New video for you guys. The 471 yard shot was done at 60 psi.
[youtube]http://www.youtube.com/watch?v=T9-VU7IM9h4[/youtube]
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Unread postAuthor: Technician1002 » Sat Sep 18, 2010 5:35 pm

Nice job. Great Video. Do you have a capture of the launch and landing site from Google Satelite view?

I still have some GPS stuff to work out as my GPS went from feet to miles as we started measuring shots. I do have a collection of photos for now until I get the distances ironed out in feet on the laptop TOPO map.

We had a nice morning at the farm and then got rained out. :evil:

We did a golfball shot at 50 PSI to see if we could find it before it started raining hard and steady. GPS marked it at .227 miles. The rain also killed shooting the ABS cannon and higher golf ball shots. I am very certain that the cannon shoots golf balls well over 1/4 mile at 100 PSI. How far, I still do not know.

The field is .45 miles from the launch point to the fence at the far end of the field.
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Attachments
FarmEntrance.JPG
Entrance to the farm. We launched from under the trees by the red barn.
Layout.JPG
The artillery is laid out ready for action under the walnut tree. We connected to the farm compressor in the tool shed instead of my wimpy compressor.
Downrange.JPG
This is a view down range. There are about 6 flags on wires marking the landings out in the field. The arrow points to the red marker in the next photo. We did go over the powerlines.
2flags.JPG
Telephoto view of a couple of the markers. The yellow one blends in and is really hard to spot. Can you find it? The flag is 2 inches square. The red one on the left stands out. It was marked with the arrow in the prior photo
Loaded.JPG
All packed up for next time
Farm2.jpg
Until I get GPS coordinates laid out proper, this is a rough location of an apple at 100 PSI and a golf ball at 50 PSI. The red flag for the apple is easy to spot in the telephoto shot. Powerlines and launch tree are marked.
Last edited by Technician1002 on Sat Sep 18, 2010 6:11 pm, edited 1 time in total.
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Unread postAuthor: Gun Freak » Sat Sep 18, 2010 5:44 pm

Ahhhh that stinks, you could totally clear a quarter mile at 100 psi! Too bad you couldn't shoot anymore. I didn't have a compressor at the lake, otherwise I would have gone higher. When I get my new pump and rebuild the new chamber for mobile shooting I will do some 120 psi shots.
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Google maps landing sites

Unread postAuthor: Technician1002 » Mon Sep 20, 2010 12:05 pm

I took the time to post the GPS coordinates of each shot and take a screen cap, then with a photo editor I copied each marker onto one screen shot aligning the background of each edit for precise location. The composite photo is below.

The numbers are random spuds and apples from both the Marshmallow cannon and large cannon with the 2 inch barrel. The kids got turns shooting the marshmallow cannon at lower pressure. Not all shots were measured.
A whole apple was launched from the 3 inch barrel at 100 PSI to see if it would fly better uncut. It did and was the farthest shot of the day. No wadding was used and it was loose in the barrel.

A golf ball was launched from the 2 inch barrel with a paper towel at 50 PSI and one was launched from the marshmallow cannon at 100 PSI. That was the only two golf balls launched before we got rained out. I still need to find all distances in feet. I am checking my various GPS programs and settings to get this. So far, they convert to miles at 0.1 miles. :(

Gun Freak wrote:Ahhhh that stinks, you could totally clear a quarter mile at 100 psi!


If the OP is getting 471 yards on 60 PSI and I am getting just short of 400 yards at 50 PSI, a quarter mile at 100 PSI should be no problem. I think the 471 yard shot had a tailwind. That did clear 1/4 mile. :roll:

Click on the photos for a larger view.
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Launch1.jpg
Launch site GPS map
Golf50PSI.jpg
screen shot of entering the golf ball GPS coordinates to get a map marker.
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Re: Google maps landing sites

Unread postAuthor: Gun Freak » Mon Sep 20, 2010 4:20 pm

Technician1002 wrote:
Gun Freak wrote:Ahhhh that stinks, you could totally clear a quarter mile at 100 psi!


If the OP is getting 471 yards on 60 PSI and I am getting just short of 400 yards at 50 PSI, a quarter mile at 100 PSI should be no problem. I think the 471 yard shot had a tailwind. That did clear 1/4 mile. :roll:

The wind was to the west, and I was firing to the north. That's why it landed in the campground instead of in the water :roll: It had a nasty curve in the air though! It was awsome. :) Pretty impressive results there, especially the golf ball from the marshmallow cannon. 200 yards on that little beast? Nice job! I wish I'd put some other barrels on Superna, just to see what kind of range I'd get with some other vegetation :D
Can google maps or Earth calculate distance between points by itself?
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Last edited by Gun Freak on Tue Sep 21, 2010 5:34 pm, edited 1 time in total.
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Re: Google maps landing sites

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Unread postAuthor: Technician1002 » Mon Sep 20, 2010 6:38 pm

"Can google maps or Earth calculate distance between points by itself?"

Sadly, no. It tries to give driving distances on nearby roads.

I'm using Back Roads Explorer on another computer to measure distances between points.. It is a Windows program. I'm running Ubuntu on this one.


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Unread postAuthor: Ragnarok » Mon Sep 20, 2010 7:15 pm

Technician1002 wrote:"Can google maps or Earth calculate distance between points by itself?"
Sadly, no. It tries to give driving distances on nearby roads.

Er - what? Google Earth has a ruler tool. (I don't think Google Maps has though.)

Select the thing that looks like a little ruler (just to the right of the mini planet symbol on the version I'm using - which I think is current, but not sure), click in one place, click in the other, and it'll tell you the "as the crow flies" distance between the two points.
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Unread postAuthor: Matt_NZ » Mon Sep 20, 2010 7:18 pm

Er - what? Google Earth has a ruler tool




Just beat me to it..(I use Google earth's ruler tool all the time) And lol, I'm getting jealous of these 1/4 mile shots, my pneumatic is only sending a battery around 150 meters. :roll:
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Unread postAuthor: Technician1002 » Mon Sep 20, 2010 7:29 pm

Ragnarok wrote: click in one place, click in the other, and it'll tell you the "as the crow flies" distance between the two points.


Hmm, I'm going to have to install Google Earth. Can you get feet instead of miles?

In the meantime, I'm going to try meters and Km and see if that works better.
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Unread postAuthor: Ragnarok » Mon Sep 20, 2010 7:38 pm

Technician1002 wrote:Hmm, I'm going to have to install Google Earth. Can you get feet instead of miles?

Feet, yards, miles (nautical miles too, if you want), metres, kilometres... even, questionably, centimetres and inches.

You probably won't be wanting for choice of units.
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Unread postAuthor: dewey-1 » Mon Sep 20, 2010 9:44 pm

Here is what I came up with using Google Earth.

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Last edited by dewey-1 on Tue Sep 21, 2010 3:56 pm, edited 1 time in total.
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Unread postAuthor: Technician1002 » Mon Sep 20, 2010 11:57 pm

dewey-1 wrote:Here is what I came up with using Google Earth.
356 yards for golfball at 50PSI. (.20 mile)
424 yards for apple at 100PSI. (.24 mile)


I'll PM you the numbers right from the GPS. The launch site is the next big tree to the south near the gap between the trees.
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Tree.JPG
Launch site
Tree.JPG (31.1 KiB) Viewed 411 times
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Unread postAuthor: dewey-1 » Tue Sep 21, 2010 12:19 pm

But here is what you sent me. Updated!

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Last edited by dewey-1 on Tue Sep 21, 2010 3:58 pm, edited 1 time in total.
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