Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 66 users online :: 4 registered, 0 hidden and 62 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

2 sprinkler

A place to ask general spud cannon related questions.
Sponsored 
  • Author
    Message

2 sprinkler

Unread postAuthor: x.X.Cpt.Rollhart.X.x » Tue May 09, 2006 6:49 pm

Hi,

I design a very simple cannon that I plan to build next week. I just want to know your opinion on this simple gun made with 2 1" sprinkler valve. It's all made of SCH40. I will use it with about 100 psi. And I want to know if the ammount of air will be ennough for the size of the air chamber and for the size of the barrel.

This is the plan, I you dont understand anythings on it ask me

Image
  • 0

User avatar
x.X.Cpt.Rollhart.X.x
Staff Sergeant
Staff Sergeant
 
Posts: 128
Joined: Sun Apr 30, 2006 6:46 pm
Reputation: 0

Unread postAuthor: spudshot » Tue May 09, 2006 6:54 pm

yeah, that'll work fine, you can lengthen the barrel if you want, you should also build a barrel support, so it doesnt whip around when you fire it.
  • 0

Image

spudshot
Brigadier General
Brigadier General
 
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am
Reputation: 0

Unread postAuthor: SpudStuff » Tue May 09, 2006 7:24 pm

reduce the size of the manifold connecting the barrel to the valves the dead space reduces performance. also if your using chambers that big use a 2 inch connection and a thereded bushing so you can upgrade later
  • 0

User avatar
SpudStuff
Major General
Major General
 
Posts: 1410
Joined: Sat Dec 10, 2005 3:55 pm
Location: Cupertino, California
Reputation: 1

Unread postAuthor: x.X.Cpt.Rollhart.X.x » Tue May 09, 2006 7:46 pm

Holy S*^# Its Still Going wrote:reduce the size of the manifold connecting the barrel to the valves the dead space reduces performance. also if your using chambers that big use a 2 inch connection and a thereded bushing so you can upgrade later


what size should I use to make the part between sprinkler valve and barrel ? (2 elbow with the tees)
  • 0

User avatar
x.X.Cpt.Rollhart.X.x
Staff Sergeant
Staff Sergeant
 
Posts: 128
Joined: Sun Apr 30, 2006 6:46 pm
Reputation: 0

Unread postAuthor: rna_duelers » Wed May 10, 2006 5:58 am

I would leave it as is because how else are you meant to vent to valves into 1 barrel with out atleast that amount of dead space?But you could have the elbows as a part of the camber and vent into the tee directly thats the only way i can see of reducing the dead space.
  • 0

Image
User avatar
rna_duelers
Major General
Major General
 
Posts: 1740
Joined: Mon Sep 26, 2005 7:07 am
Location: G-land Australia
Country: Australia (au)
Reputation: 1

Unread postAuthor: x.X.Cpt.Rollhart.X.x » Wed May 10, 2006 5:38 pm

ok final result :

what are your comments ?

The 2 black circle are sprinkler valve.

I didnt draw the blowgun (to open these srpinkler valve) and all the hoses to connect these 2 chamber.

Image
  • 0

User avatar
x.X.Cpt.Rollhart.X.x
Staff Sergeant
Staff Sergeant
 
Posts: 128
Joined: Sun Apr 30, 2006 6:46 pm
Reputation: 0

Unread postAuthor: CS » Wed May 10, 2006 7:52 pm

I would highly suggest better valves. Dumping a 4" by 1.5' chamber threw 1" then a sprinkler vavle is really killing your flow. You dont need to buy a supah or anything, just build a T-piston.
  • 0

User avatar
CS
Donating Moderator
Donating Moderator
 
Posts: 1897
Joined: Fri Feb 18, 2005 5:32 pm
Location: Southern Utah
Country: United States (us)
Reputation: 4

Sponsored

Sponsor
 


Unread postAuthor: x.X.Cpt.Rollhart.X.x » Wed May 10, 2006 8:03 pm

pimpmann22 wrote:I would highly suggest better valves. Dumping a 4" by 1.5' chamber threw 1" then a sprinkler vavle is really killing your flow. You dont need to buy a supah or anything, just build a T-piston.


but a lot of person did that ... like :

Image

Image




I am better to do something like that ?

Image

I am talking about the distance it will shoot
  • 0

User avatar
x.X.Cpt.Rollhart.X.x
Staff Sergeant
Staff Sergeant
 
Posts: 128
Joined: Sun Apr 30, 2006 6:46 pm
Reputation: 0

Unread postAuthor: spudshot » Wed May 10, 2006 8:55 pm

it'll shoot good, dont get me wrong, but i agree with pimpmann, build some piston valves, or get some bigger sprinklers
  • 0

Image

spudshot
Brigadier General
Brigadier General
 
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am
Reputation: 0

Unread postAuthor: Darkside 6ix » Wed May 10, 2006 9:18 pm

i duno if that would work... i think it might but if one valve doesnt go at the same time then you might have.....ooo you might even be able to make like a double shot er somthing just thought of it :)
  • 0

User avatar
Darkside 6ix
1st Lieutenant
1st Lieutenant
 
Posts: 298
Joined: Sun Apr 30, 2006 6:53 am
Location: United States
Reputation: 0

Unread postAuthor: Benny » Thu May 11, 2006 3:26 am

of course it will vent both pilots at the same time. :x
  • 0


Benny
Brigadier General
Brigadier General
 
Posts: 844
Joined: Wed Apr 19, 2006 8:21 pm
Location: Tasmania, Australia.
Reputation: 0

Unread postAuthor: x.X.Cpt.Rollhart.X.x » Thu May 11, 2006 5:50 am

pvcpsyco wrote:i duno if that would work... i think it might but if one valve doesnt go at the same time then you might have.....ooo you might even be able to make like a double shot er somthing just thought of it :)


the 2 sprinler work on the same blowgun ...
  • 0

User avatar
x.X.Cpt.Rollhart.X.x
Staff Sergeant
Staff Sergeant
 
Posts: 128
Joined: Sun Apr 30, 2006 6:46 pm
Reputation: 0

Unread postAuthor: sgort87 » Thu May 11, 2006 12:39 pm

I love how the problems on Spudfiles are pointed out much slower than in a duplicate thread on Spudtech.

Yes, other people have built similar things to your design and they work alright, but what if I told you that for about $15 more you can have yourself a MUCH more powerful launcher without needing to modify your chamber or barrel volume?

Do what Pimpman said (which is about exactly what I said on Spudtech) and make two Barrel-Sealing Tee Valves, each actuated by a modified sprinkler valve. They are not hard to make in a 2" Tee. 1.25" end caps fit perfectly inside 2" pipe and work great as pistons. Give it a try and you should be quite happy.
  • 0

<a href="http://www.launchpotatoes.com"><img src="http://www.launchpotatoes.com/images/uploads/logo2.PNG"></a>
http://www.LaunchPotatoes.com
User avatar
sgort87
Donating Member
Donating Member
 
Posts: 1038
Joined: Sun Sep 18, 2005 10:32 am
Location: Lockport, Illinois
Country: United States (us)
Reputation: 1

Unread postAuthor: )DEMON( » Thu May 11, 2006 1:47 pm

um,in your second new pic does that huge cannon have 4 sprinkler valves ?,or have i inhaled too much glue fumes
  • 0

Forever dreaming...
User avatar
)DEMON(
Major General
Major General
 
Posts: 1391
Joined: Sun Mar 12, 2006 1:22 pm
Location: Johannesburg South Africa
Reputation: 0

Return to General Spud Cannon Related

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'