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 70 users online :: 5 registered, 0 hidden and 65 guests


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

Registered users: Bing [Bot], Exabot [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

Hammer valve for paintball marker

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

Hammer valve for paintball marker

Unread postAuthor: M.J.P. » Sun Aug 16, 2009 3:13 am

I am in the process of making a slightly tweaked version of sniper hero's hammer valve.

I have most parts but i have a few queries before fully assembling.

Assembled
Image
Parts
Image
Stem
Image

'A' = I wish to make a piston to surround the bolt (probably out of nylon) so it is flush with the ID of the (hammer side) nipple. I have access to a lathe but i cannot find any nylon rods. Where can i get them other than Mcmaster?

'B' = I need to attach the washer to the bolt for the spring to push against but glueing it on seems a pretty scrappy method. Any suggestions?

Any overall suggestions/problems would be much appreciated.
  • 0

Never take life seriously. Nobody gets out alive anyway.
User avatar
M.J.P.
Specialist
Specialist
 
Posts: 48
Joined: Thu May 08, 2008 2:36 am
Reputation: 0

Unread postAuthor: DinerKid » Sun Aug 16, 2009 9:43 am

as for A i think Grainger's or any other online parts store could help you out. we had to get some for a robot recently and we were happy with mcmaster.

as for B maybe you could weld it or something of that nature but you could also find a piece of pipe that fits over the bolt to act as like a long spacer then you could put on the washer. the spring could push the washer against the spacer holding everything in place.
  • 0


DinerKid
Corporal
Corporal
 
Posts: 67
Joined: Fri Aug 29, 2008 6:21 pm
Reputation: 0

Unread postAuthor: MRR » Sun Aug 16, 2009 10:00 am

for B: buy a thread cutting tool to extend the thread of the bolt to the head. Then you use two nuts to fix the washer.

Image
  • 0


MRR
Major
Major
 
Posts: 362
Joined: Tue Feb 17, 2009 2:29 pm
Reputation: 0

Re: Hammer valve for paintball marker

Unread postAuthor: roboman » Sun Aug 16, 2009 10:00 am

M.J.P. wrote:'B' = I need to attach the washer to the bolt for the spring to push against but glueing it on seems a pretty scrappy method. Any suggestions?


Epoxy is one of the strongest adhesives you can get your hands on. Use it. :D
  • 0

User avatar
roboman
Sergeant Major
Sergeant Major
 
Posts: 176
Joined: Tue Nov 25, 2008 11:18 pm
Location: Long Beach, CA
Reputation: 0

Re: Hammer valve for paintball marker

Unread postAuthor: Ragnarok » Sun Aug 16, 2009 10:42 am

roboman wrote:Epoxy is one of the strongest adhesives you can get your hands on.

Just don't do a "Fat Pants" and get epoxy on your hands...

(Sorry, UKSGC in-joke. :roll:)
  • 0

Does that thing kinda look like a big cat to you?
User avatar
Ragnarok
Chief of Staff
Chief of Staff
 
Posts: 5339
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK
Reputation: 8

Unread postAuthor: noname » Sun Aug 16, 2009 12:25 pm

For A, if you can't find any nylon, then try going to a plastics store to see what kind of materials you can pick up there. Delrin Acetal rod is probably one of the strongest plastics there is and usually isn't hard to find.
  • 0

User avatar
noname
Lieutenant General
Lieutenant General
 
Posts: 2699
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA
Country: United States (us)
Reputation: 9

Unread postAuthor: M.J.P. » Mon Aug 17, 2009 2:10 am

Thanks for all the replies.

MRR wrote:for B: buy a thread cutting tool to extend the thread of the bolt to the head. Then you use two nuts to fix the washer.

I have never used one before, are they hard to get the right pitch? I think i might go back to Bunnings and try find a bolt that already has threads further up the bolt. I also saw a 1/2 metre threaded rod with the same M6 threading so i could use that as well.

Also, good news. I was searching around my school workshop and found a piece of nylon.
Image
Btw, when my teacher asks you, it's for my clock i'm building at school... :D

Before i drill the hole in the rod and chuck it on the lathe, what is a good method of centering the whole with a drill press?
  • 0

Never take life seriously. Nobody gets out alive anyway.
User avatar
M.J.P.
Specialist
Specialist
 
Posts: 48
Joined: Thu May 08, 2008 2:36 am
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: inonickname » Mon Aug 17, 2009 3:35 am

Answer: don't.

Why not just use the lathe to drill the hole?

If you must use a drill press, chuck the stock in the chuck/arbor and clamp the bit.
  • 0

PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
User avatar
inonickname
Lieutenant General
Lieutenant General
 
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am
Reputation: 0

Unread postAuthor: SEAKING9006 » Fri Aug 21, 2009 9:30 am

Thread cutters aren't hard to use at all. I have to use them all the time on my high school's robotics team. They have the pitch pre set in them, they come in something like a socket wrench set. Just throw it on the rod and start twisting. You may want to practice first, though.
  • 0

Completed projects:
CA1 SMSS Basic Inline
CA3 PDAB Airburst Cannon

Current Project: Bolt action rifle (25x140mm + 1in shot)

SEAKING9006
Colonel
Colonel
 
Posts: 734
Joined: Mon Jun 23, 2008 3:20 pm
Location: Texas
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'