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 61 users online :: 4 registered, 0 hidden and 57 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Help making a line launcher

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

Unread postAuthor: ascientist » Wed Aug 28, 2013 3:24 pm

So should I just go with a 2" sprinkler valve? I've not been able to find a good size dust collector valve or QEV for a reasonable price.
  • 0


ascientist
Private
Private
 
Posts: 17
Joined: Wed Aug 28, 2013 1:08 am
Reputation: 0

Unread postAuthor: dart guy » Wed Aug 28, 2013 3:27 pm

pm me and i will help you make plans but i need details like does the end of the line have to float or can the rope sink but i may not be as available because of school but in theretical plans for a one shot cannon i can help if you can find the peices needed. also you should know which materials will be the lightest but still durable.also if you have a throw bag you should also tell me the diamiter of it. so just pm for help with plans, hint because you are new just press the pm buttun in my post. do it now.
  • 0

User avatar
dart guy
Major
Major
 
Posts: 397
Joined: Mon May 13, 2013 7:54 pm
Location: not telling you
Reputation: 5

Unread postAuthor: dewey-1 » Wed Aug 28, 2013 4:54 pm

ascientist wrote:Would you recommend this valve?
http://www.ebay.com/itm/Asco-JFK8353J39 ... 43be7950a8
I'm all for just buying a valve, but am having a hard time finding/identifying an appropriate one for purchase.


Look for a 8353H038 by ASCO.
It is a non-solenoid type.
http://www.ebay.com/itm/RED-HAT-8353H03 ... 4ac2ea6fcb

Here is an example:
http://www.spudfiles.com/forums/asco-ne ... 17764.html
  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Unread postAuthor: ascientist » Wed Aug 28, 2013 5:43 pm

I'll have to look into whether I can find a fire extinguisher. Thanks for the valve recommendation. When I have some time I will price shop and buy that one. Do you recommend the same trigger setup as shown in your link?
  • 0


ascientist
Private
Private
 
Posts: 17
Joined: Wed Aug 28, 2013 1:08 am
Reputation: 0

Unread postAuthor: dewey-1 » Wed Aug 28, 2013 6:26 pm

  • 0

Last edited by dewey-1 on Wed Aug 28, 2013 7:14 pm, edited 2 times in total.
User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Unread postAuthor: Technician1002 » Wed Aug 28, 2013 6:45 pm

Water bottle and tennis ball comparability sounds great with 2.5" schedule 40 PVC. I think that excludes a coaxial build.


Re Read my post. NOT compatible with Schedule 40 thickness pipe. Use the thinwall pipe.
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: ascientist » Wed Aug 28, 2013 7:19 pm

dewey-1
Thanks for the links. Would 3 inch be a little overkill for a portable launcher? The price is very tempting.

Technician1002
I may be confused, but I thought schedule 40 was thinner than 80. At any rate I understand - use the thin wall for tennis balls.
  • 0


ascientist
Private
Private
 
Posts: 17
Joined: Wed Aug 28, 2013 1:08 am
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: dewey-1 » Wed Aug 28, 2013 7:37 pm

ascientist wrote:dewey-1
Thanks for the links. Would 3 inch be a little overkill for a portable launcher? The price is very tempting.


Look at the Flex Kleen valves, new and cheap.
  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Unread postAuthor: ascientist » Wed Aug 28, 2013 8:26 pm

This okay?

http://www.ebay.com/itm/ASCO-DIAPHRAGM- ... vi-content

What would you recommend for triggering this valve?
  • 0


ascientist
Private
Private
 
Posts: 17
Joined: Wed Aug 28, 2013 1:08 am
Reputation: 0

Unread postAuthor: dewey-1 » Wed Aug 28, 2013 9:57 pm

  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Unread postAuthor: ascientist » Wed Aug 28, 2013 10:07 pm

dewey-1
Thanks so much for your help. I ordered the ASCO FLEX KLEEN M28244 and 220 PSI Lock On Tire Inflator with Air Pressure Gauge Pistol Chuck Flexible Hose.
  • 0


ascientist
Private
Private
 
Posts: 17
Joined: Wed Aug 28, 2013 1:08 am
Reputation: 0

Unread postAuthor: Technician1002 » Wed Aug 28, 2013 10:31 pm

Here is a pipe chart showing some common sizes besides 80 and 40.

The ID of Schedule 40 pipe is too small for pop cans and water bottles. Besides Schedule sizes, there are metric sizes and class sizes. I'm using either a class 200 or class 160 pipe for my cannon.

Pick pipe with the ID larger than the OD of a pop can.
A current U.S. 12 oz soft drink can measures about 6.6 cm(2.6 inches) in diameter and 12.1 cm (4.75 inches) tall.
Image
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: ascientist » Wed Aug 28, 2013 11:02 pm

Thanks for the chart. I can't speak for water bottles or pop cans, but everything I'm finding on tennis balls indicates 2.5" schedule 40:
http://www.spudtech.com/detail.asp?id=38
http://www.antennalaunchers.com/csv19/csv19asm.html

Sounds like you have had great results with your throw line launcher. Can I ask what the setup you have for propelling it. I'm trying to decide what size compression chamber I will need and how long the barrel should be.

Once I get this completed I'll have to talk with our search and rescue radio group to see if any of them want to put up some antennas. I have a HAM licence, but only own a handheald.

Thanks again for your help.
  • 0


ascientist
Private
Private
 
Posts: 17
Joined: Wed Aug 28, 2013 1:08 am
Reputation: 0

Unread postAuthor: ascientist » Thu Aug 29, 2013 11:00 pm

Here is a contribution sent to me by dart guy:

"if you would like to create an inline qev like thing, also you should make it so that the barrel is collapsible with screw together couplings so that it can be essentially 1' 1/2" long and as wide as the barrel. i am thinking of a thing like this.at the end is a co 2 bottle connector(right)(also it should have a regulator so that it doesn't blow up the chamber) then it is connected to a ball-valve and then an air chamber which powers up due to opening the ball-valve on the co2 side then you close it when you get to the right psi then open the other one so that it shoots the load. also you should make a home made round which will be discussed later. post this image in the forum and ask for improvement."
  • 0

Attachments
Image.png
Image from dart guy
Image.png (5.39 KiB) Viewed 772 times

ascientist
Private
Private
 
Posts: 17
Joined: Wed Aug 28, 2013 1:08 am
Reputation: 0

Unread postAuthor: Gun Freak » Fri Aug 30, 2013 6:48 am

A ball valve isn't what you wanna use... It throws off accuracy and consistency...
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

PreviousNext

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], Yahoo [Bot]

Reputation System ©'