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 48 users online :: 4 registered, 0 hidden and 44 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

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

Push Button firing a Solenoid, any ideas??

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: dewey-1 » Sat Sep 03, 2011 7:54 pm

Drill and tap, then install fitting with JB Weld.

The flow control regulator and tire inflator are from Harbor Freight.
I have a male quick connect on the flow control.

All the fittings I ordered from McMaster Carr.
  • 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: Atattack » Sat Sep 03, 2011 8:09 pm

Ok, noob ? Here cause I have not designed this step yet. What do u mean by flow control? And why do you have a male quick disconnect? Is this for easy filling of chamber. Do you have which part numbers you chose on McMaster Carr? They have a ton on there as I am sure you already know. Thanks man for all the help.
  • 0


Atattack
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Fri Aug 19, 2011 8:33 am
Reputation: 0

Unread postAuthor: dewey-1 » Sat Sep 03, 2011 8:44 pm

Flow control is being used as a on off valve with a guage. It is smaller than most 1/4 ball valves. You can control how fast the chamber fills by adjusting the knob.

http://www.harborfreight.com/125-psi-ai ... 68219.html

Pistol Grip Inflator;
http://www.harborfreight.com/pistol-gri ... 68270.html

I can explain further if you actually plan on doing all this.
  • 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: Atattack » Sat Sep 03, 2011 8:51 pm

I have ordered half of pieces so I am doing this for sure. Got one project at metal shop now getting some welding done. So why do both items have gauges? Also do you have to close flow control one you get tank full before disconnecting or will it hold air without closing? Thanks
  • 0


Atattack
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Fri Aug 19, 2011 8:33 am
Reputation: 0

Unread postAuthor: dewey-1 » Sat Sep 03, 2011 9:22 pm

Because that is what is on them for normal use.

The gauge on the inflator will be removed and become the exhaust portor it can be plugged and inflator output port will be th vent. There are different options here.

Yes, you close the regulator when desired pressure achieved.
Are you planning to use a hand pump or a compressor?

What pieces are ordered and what is being welded?
  • 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: Atattack » Sat Sep 03, 2011 10:19 pm

I have ordered pump and some aluminum fittings. I am using a 12vdc air suspension pump from Helix. Will pump up to 200 psi and over 3.5 cfm a minute. So when putting in the regulator, do you screw it directly into the elbow or use a connector? What do you find is the benefit of using this as compared to a schraeder valve? Thought that might be easier to connect and disconnect.
  • 0


Atattack
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Fri Aug 19, 2011 8:33 am
Reputation: 0

Unread postAuthor: dewey-1 » Sat Sep 03, 2011 10:48 pm

Here is a close up of the fittings.
Note the conduit nut used as a lock nut for the elbow to the valve.
  • 0

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

Sponsored

Sponsor
 


Unread postAuthor: Atattack » Sat Sep 03, 2011 11:16 pm

That detail helps, I like that set up. Few ?s for ya.

Why you have a small elbow where you connect hose to fill chamber.

What type of connection do you have between regulator and elbow on chamber?

Is that the make quick connect on the tip there to connect your air source to?
  • 0


Atattack
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Fri Aug 19, 2011 8:33 am
Reputation: 0

Unread postAuthor: dewey-1 » Sun Sep 04, 2011 11:46 am

Here is a partial list and drawing.


Item 1 pn 50925K131 Hex Nipple 1/4 NPTF Steel (for 1-1/2 elbow)

Item 2 pn 50925K196 M-F-F Tee 1/8 NPTF Steel (for pilot valve)

Item 3 pn 50925K258 Hex Nipple Reducer 1/4 to 1/8 NPTF Steel (for inflator output)

Item 4 pn 50925K271 M-F 90 Elbow 1/4 (for inflator input)

Item 5 pn 50925K271 M-F 90 Elbow 1/4 (for regulator input)

Item 6 pn 4638K227 M-F 90 Elbow 1-1/2 Galvanized (for valve input)

Item 7 pn 4549K654 Nipple 3 inch 1-1/2 NPT Galvanized (for valve Elbow input)

Item 8 pn 4549K654 Nipple 3 inch 1-1/2 NPT Galvanized (for valve output)

Item 9 pn 2525A113 Tap 1/4 NPT (for 1-1/2 Elbow)

Item 10 pn 50925K271 1/4 NPT Tap

Item 11 local hardware store 1/4 Hose Barb 1/8 NPTF (for pilot valve)

Item 12 local hardware store 1/4 Hose Barb 1/4 NPTF (for inflator input)
  • 0

Attachments
Atattack-prelim.jpg
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: Atattack » Sun Sep 04, 2011 11:56 am

You are a good man, thanks a lot, had no idea there were that many parts. Thanks for helping me out, I really appreciate it.

Oh yea, why did you put an elbow in between regulator and fill valve? Also, why did you choose a regulator to fill up tank? Is there another way to fill up tank without having to close a valve first? Just curious why you chose that way.
  • 0


Atattack
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Fri Aug 19, 2011 8:33 am
Reputation: 0

Unread postAuthor: dewey-1 » Sun Sep 04, 2011 12:10 pm

What did you decide for a chamber?
If you go with my layout design I think it will be much more comfortable to shoot!

When you start construction, let me know. (item 3 needs hole filled with JB Weld)
  • 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: Atattack » Sun Sep 04, 2011 12:32 pm

Why does only item 3 need JB weld and the others don't? I added an edit above and not sure if you saw it.

Why did you put an elbow in between regulator and fill valve? Also, why did you choose a regulator to fill up tank? Is there another way to fill up tank without having to close a valve first? Just curious why you chose that way.
  • 0


Atattack
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Fri Aug 19, 2011 8:33 am
Reputation: 0

Unread postAuthor: dewey-1 » Sun Sep 04, 2011 1:02 pm

The pilot air must go to the inflator input, when the trigger is actuated, the air will vent out the old meter port. If not plugged, it would bypass the inflator valve input and trigger and vent out the old meter port all the time!

I prefer quick connects rather than Schrader valves. This allows the compressor to be hooked up all the time or not.

What better way is there for the physical size than a flow regulator when you will still need a pressure guage. If you add a guage and a Schrader valve you need to add two more tapped holes in the chamber thus weakening the chamber. This method only requires one tapped hole and gives you fine control of the fill rate.

The elbow on the flow regulator is to give the air line a vertical connect rather than stressing the regulator from extra weight from a horizontal connect. (When hooked to compressor all the time)

You may want to first analyze some of the concepts used before questioning.
  • 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: Atattack » Sun Sep 04, 2011 1:12 pm

Didn't mean to ? you, I was just trying to understand why you chose those options since you planned this for 6 months figured you had a good reason to do so and was just trying to understand why. Both reason make perfectly good sense. I just see a lot of people on here using schraeder valves but do like your set up better.
  • 0


Atattack
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Fri Aug 19, 2011 8:33 am
Reputation: 0

Unread postAuthor: Atattack » Sun Sep 04, 2011 4:43 pm

What is part "E" on you CAD image? Is that a type of lock ring?
  • 0


Atattack
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Fri Aug 19, 2011 8:33 am
Reputation: 0

PreviousNext

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'