Search found 53 matches

by Doodmens
Tue Jan 03, 2017 6:31 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Bolt action BB loader - Issues
Replies: 5
Views: 1547

Re: Bolt action BB loader - Issues

Been busy with school and such, but the stock is almost done, just need to sand ( a lot ) and apply finish. For the gun itsself, there are a few features I want to add, like a way to secure it to the stock other than friction, and a trigger safety ( as it's very sensitive right now ). I'll try to up...
by Doodmens
Sat Nov 19, 2016 3:59 pm
Forum: General How-To & Discussion
Topic: Short question topic
Replies: 1463
Views: 84806

Re: Short question topic

Has anyone made a pressure regulator themselves? I've designed one and I'm planning to machine it soon.
Image
Size: 2" to 4", depends on application
In and output pressure: probably 1500 psi to 300 psi.. I've yet to fully decide. I might make a few, anyone interested?
by Doodmens
Wed Sep 28, 2016 8:51 am
Forum: Ammo & Parts
Topic: Teflon lined barrel
Replies: 1
Views: 919

Teflon lined barrel

Hello, I noticed that teflon and steel have a very low friction constant (0.05), and I was wondering if you could line a barrel with teflon (or make a barrel entirely out of teflon) and reach higher velocities than with a steel barrel (friction steel vs steel is 3x higher than steel vs teflon). Has ...
by Doodmens
Tue Sep 20, 2016 8:05 am
Forum: General How-To & Discussion
Topic: Is spudding dead?
Replies: 102
Views: 25676

Re: Is spudding dead?

Haha that's pretty DOPE you could say!
by Doodmens
Fri Sep 16, 2016 3:39 pm
Forum: Pneumatic Cannons
Topic: Wacky Breechloading Launcher
Replies: 10
Views: 1319

Re: Wacky Breechloading Launcher

I must agree with DaVinci then :)

You should throw some math at it to see under what circumstances it would work. I wonder though, what do you exactly mean by choke? Something to time when the air enters the chamber, but how? (if not manually)
by Doodmens
Fri Sep 16, 2016 3:26 pm
Forum: SpudFiles Discussion
Topic: Using the front page
Replies: 7
Views: 1721

Re: Using the front page

Good to see that it caught on!
by Doodmens
Fri Sep 16, 2016 3:22 pm
Forum: Pneumatic Cannons
Topic: QEV and building up
Replies: 11
Views: 2138

Re: QEV and building up

I do not have experience with the norgren valves, but I can say that a cheap Chinese valve will work just fine! I have started using those and I still do because 1) they are very simple 2) easy to mod 3) very cheap (although you said money isn't the issue). http://www.ebay.com/itm/Black-Pneumatic-Qu...
by Doodmens
Fri Sep 16, 2016 4:50 am
Forum: Pneumatic Cannons
Topic: Wacky Breechloading Launcher
Replies: 10
Views: 1319

Re: Wacky Breechloading Launcher

Nice, I think this is a very elegant design. Curious to see how it will perform. Hooking up the trigger cocking to the regulator piston something I hadn't thought of before...
by Doodmens
Sun Sep 11, 2016 11:49 am
Forum: Pneumatic Cannons
Topic: Considerations to have when building a Coaxial Piston Cannon
Replies: 4
Views: 989

Re: Considerations to have when building a Coaxial Piston Ca

I find your considerations very interesting, and I don't have a proper answer to all of them, but I can address one; The issue with pure mechanical action is generally that you can't go very high pressure without 'ridiculous' mechanical force to open the valve. That is what has stopped me from using...
by Doodmens
Sat Sep 10, 2016 10:15 am
Forum: SpudFiles Discussion
Topic: Using the front page
Replies: 7
Views: 1721

Re: Using the front page

EDIT - Oh and about the YouTube channel... I don't Youtube much, but I do have some sort of channel that was used for the videos on the home page and a few other areas. Perhaps there is a way for me to allow others to add to the channel? I think one can create a 'topic' where everyone can add video...
by Doodmens
Wed Sep 07, 2016 9:21 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Bolt action BB loader - Issues
Replies: 5
Views: 1547

Re: Bolt action BB loader - Issues

Tried that, without much success
by Doodmens
Sun Sep 04, 2016 11:32 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Bolt action BB loader - Issues
Replies: 5
Views: 1547

Bolt action BB loader - Issues

Hello, It's been a while since I finished a rifle, but right now I'm very close. (that's the mechanical part, haven't started on the stock yet, boring..) Here are a few pictures: http://i.imgur.com/RsiVika.jpg http://i.imgur.com/RmSttCD.jpg http://i.imgur.com/5tbKCoL.jpg And now the part I'm having ...
by Doodmens
Sun Sep 04, 2016 8:03 am
Forum: SpudFiles Discussion
Topic: Using the front page
Replies: 7
Views: 1721

Using the front page

Hi guys, I visit the site quite often, and I am getting a little tired of this 'SpudFiles recently did a spud shooting event...' That was almost 3 years ago. I think it would be nicer to show either weekly or monthly 'spotlighted' posts, that could be; interesting designs, nicely crafted launchers, ...
by Doodmens
Thu Jul 14, 2016 11:41 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Air Tank Materials?
Replies: 8
Views: 952

Re: Air Tank Materials?

http://www.copper.org/applications/plumbing/cth/design-installation/cth_3design_burst.html If you click on the tables you'll see that copper is a pretty good material, and steel is even stronger of course. The critical part here is the joint, so I'd recommend not going above 1000 psi without welded ...
by Doodmens
Thu Apr 21, 2016 3:48 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Solenoid needed for HPA single-shot sniper - ideas?
Replies: 1
Views: 809

Re: Solenoid needed for HPA single-shot sniper - ideas?

How HPA is your HPA? The regular chinese valves generally don't take more than 10 bar. For the timing I recommend you use a microcontroller such as an Arduino, which are cheap (if you get a chinese ripoff), easy to program and use