| Do you like my cannon? |
| yes |
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87% |
[ 21 ] |
| no |
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4% |
[ 1 ] |
| its ok |
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8% |
[ 2 ] |
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| Total Votes : 24 |
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| explsvcookie257 |
 Posted: 02/28/2008 22:57 PM Post subject: |
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Corporal
Joined: 14 Jan 2007
Posts: 66
178.13 Spud Bux
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| yeah thanks for all the feedback you guys i truly think anyone can do that paint job and i have the hose that length for a reason so when i hold it its comfortable in my hand rather then directly under and also i dont want to mess upp the blow gun cuz it was $15 and is rated to 150psi got it from napa and i think its better then my old modded one that was from home depot that pretty much everyone has here and the reason im not using it is because while in the process of modding it even more then it used to be i made some hole to big so it leaks but maybe some teflon tape can fix it idk. If you guys are wondering i am currently working on a 3" piston valve with 2" porting. one day i will get some damage pics and maybe a video. @sthrone i can get more pics to show it off better but i pretty much got every angle covered. ohh i forgot thanks for all the compliments. |
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| taytayswims |
| Posted: 05/05/2008 21:51 PM Post subject: |
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Specialist
Joined: 29 Apr 2008
Posts: 53
95.62 Spud Bux
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Very nice i love the paint job.
I have been looking around and i was going for a double chamber design and i have seen two or three of them and yours is very impressive job well done mate!!!!! |
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| biggsauce |
| Posted: 05/05/2008 21:58 PM Post subject: |
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Captain
Joined: 07 Jun 2007
Posts: 323
615.87 Spud Bux
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Hoowee, shes a clean one! Never seen a maroon launcher, and with the grey, I like it! Looks like a fun cannon!
A little paint goes a long way in a launchers apearance, and its good to see some others who take the time to do so |
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| rp181 |
| Posted: 05/05/2008 22:00 PM Post subject: |
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Major
Joined: 13 Dec 2007
Posts: 356
446.12 Spud Bux
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| i dont get this, why use 2 valves after each chamber, instead of just one at the Tee? |
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| biggsauce |
| Posted: 05/05/2008 22:06 PM Post subject: |
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Captain
Joined: 07 Jun 2007
Posts: 323
615.87 Spud Bux
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| rp181 wrote: | | i dont get this, why use 2 valves after each chamber, instead of just one at the Tee? |
Why not? Play around with GGDT, it'll show you get more power. |
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| rp181 |
| Posted: 05/05/2008 22:09 PM Post subject: |
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Major
Joined: 13 Dec 2007
Posts: 356
446.12 Spud Bux
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| i know it gets more power? but why? |
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| biggsauce |
| Posted: 05/05/2008 22:13 PM Post subject: |
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Captain
Joined: 07 Jun 2007
Posts: 323
615.87 Spud Bux
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Ahhh the actual math escapes me at the moment, but a certain volume of air at a certain pressure will give you a certain velocity. If you double the volum the same pressure and make it flow through the same area tube, the resulting speed should double.
Someone correct me if I'm wrong, but that sounds right |
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| Darkside 6ix |
| Posted: 05/05/2008 22:54 PM Post subject: |
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1st Lieutenant
Joined: 30 Apr 2006
Posts: 296
343.15 Spud Bux
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| well having 2 seperate chamber is just as good as having one big chamber, unless he using it as a 2 shot mechanism |
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| Eddbot |
| Posted: 05/06/2008 1:36 AM Post subject: |
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Major
Joined: 09 Oct 2007
Posts: 362
420.11 Spud Bux
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| rp181 wrote: | | i know it gets more power? but why? |
double the pressure going out through the same barrel, doubles the performance |
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| MrCrowley |
| Posted: 05/06/2008 2:07 AM Post subject: |
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Blizzard of Ozz
Joined: 23 Jun 2006
Posts: 5947
2649.74 Spud Bux
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| Eddbot wrote: | | rp181 wrote: | | i know it gets more power? but why? |
double the pressure going out through the same barrel, doubles the performance |
It's not doubling the pressure, it's doubling the volume of air pressure. This wont double the performance either, without a considerably longer barrel.
Even if it was double the pressure it would not double the performance, the force is equal to pressure x area. Unless the original area of the projectile was increased, the performance wouldn't come close to doubling. |
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| Lentamentalisk |
| Posted: 05/06/2008 2:18 AM Post subject: |
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Resident Tinkerer
Joined: 07 Aug 2007
Posts: 637
285.49 Spud Bux
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| also, though there are two valves, the flow is restricted again down to 1" or what ever when he uses the T to connect the two chambers before leading to the barrel. This means that there is actually very little gained. |
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| RDX, |
| Posted: 05/06/2008 8:34 AM Post subject: |
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Corporal
Joined: 31 Mar 2007
Posts: 73
155.01 Spud Bux
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| Lentamentalisk wrote: | | also, though there are two valves, the flow is restricted again down to 1" or what ever when he uses the T to connect the two chambers before leading to the barrel. This means that there is actually very little gained. |
think about the opening time of the valves and flow..
if he has one valve it has to be fully opened for "full" flow and that takes the time that valve opening time is.. but when he has two valves they both need to open only half way for "full" flow.. so using two valves= much faster opening time for full flow 
btw.sorry my bad english, I hope you get what I mean |
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| explsvcookie257 |
| Posted: 05/07/2008 16:08 PM Post subject: |
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Corporal
Joined: 14 Jan 2007
Posts: 66
178.13 Spud Bux
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Wow you guys thanks for all feedback.I knew adding a thumbnail picture thing would help and right now I'm fixing the back end of it because if you look where the elbows connect to the valves there is that painted grey fittings its because the adapters were 3/4" not 1" so i bought all the right fittings and rebuilding the back end so i will have to repaint it and i will make a barrel support in my wood shop class that adjusts to any size barrel  because i have a 1.5", golf ball, 2", and a 3". and yes the valves open at the same time and I always pressurize it to 90psi to be safe and I can still send a caulk tube a little over 200 yards i need to measure again when they cut down the wheat in my field and golf balls go out of sight and have hang times for like 20 seconds or so if shot straight up ill edit if thats wrong its a guess. Thats all I got to say as of right now. Thanks again for all the positive feedback. |
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| Darkside 6ix |
| Posted: 05/09/2008 0:07 AM Post subject: |
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1st Lieutenant
Joined: 30 Apr 2006
Posts: 296
343.15 Spud Bux
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| Uh Oh'z, isnt it dangerous to fire things straight up? lol. its a bird, no, its a plane, no, its a golf ball!!! |
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| explsvcookie257 |
| Posted: 05/09/2008 14:51 PM Post subject: |
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Corporal
Joined: 14 Jan 2007
Posts: 66
178.13 Spud Bux
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| pvcpsyco wrote: | | Uh Oh'z, isnt it dangerous to fire things straight up? lol. its a bird, no, its a plane, no, its a golf ball!!! |
Yes it is but my dad lives on a 240 acre farm and its a mile going diagonal from one corner to the other but it is not a good idea. I am shooting with the wind and the nearest house is behind me when I shoot and the closest one to where I am aiming is .92 miles away heres a picture of my dads house where I shoot my cannon and the corners are marked out. The white thing circled is the barn and the other circle is where the house is and its smaller then the barn and covered by trees.
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