Search found 251 matches

by matti
Tue Apr 24, 2018 12:27 pm
Forum: General How-To & Discussion
Topic: GGDT/HGDT Request Thread
Replies: 108
Views: 16034

Re: GGDT/HGDT Request Thread

Cthulhu wrote:Does this look right for a modified 1 inch sprinkler valve?
I'm getting very odd results using the optimization tool (such as a 1 inch chamber to 100 inch barrel).
That should be 22g (grams) not 22oz (= 620 grams) :wink:
by matti
Mon Apr 02, 2018 3:31 am
Forum: SpudFiles Discussion
Topic: 2018 Impromptu Non-Ghetto Contest
Replies: 24
Views: 3080

Re: 2018 Impromptu Non-Ghetto Contest

Well, looks like this is another contest that failed to get off the ground. :( It's April 2nd here. Thanks to all who showed interest, and hopefully we can have a more successful event in the future. Oh no :shock: I think we need longer time to participate, two months is not enough for some of us :...
by matti
Mon Mar 19, 2018 1:22 pm
Forum: Hybrid Cannons
Topic: Thoughts on 10X large hybrids and DDT?
Replies: 8
Views: 936

Re: Thoughts on 10X large hybrids and DDT?

You probably know this, but Utrons CLGG might give some ideas on burst disc and combustion control, there is some good information in the chapter "Combustion and pressure control" here is the document: http://www.dtic.mil/get-tr-doc/pdf?AD=ADA462130 example, "Pressure waves in the propellant gases a...
by matti
Mon Jan 29, 2018 11:45 am
Forum: SpudFiles Discussion
Topic: 2018 Impromptu Non-Ghetto Contest
Replies: 24
Views: 3080

Re: 2018 Impromptu Non-Ghetto Contest

mark.f wrote:
matti wrote:Hope to do something totally new :idea:
That's the idea. :D
Btw.. Should this competition be also mentioned in the front page ? It took me some time to find this thread :roll:

The last front page post has been there for long time :D
by matti
Sun Jan 28, 2018 11:28 am
Forum: SpudFiles Discussion
Topic: 2018 Impromptu Non-Ghetto Contest
Replies: 24
Views: 3080

Re: 2018 Impromptu Non-Ghetto Contest

I think it's time for me to participate to my first spudfiles contest :lol:

Haven't done actual spudgun in many years. Since this is a non ghetto contest, I will give it my best with cnc machines and 3D printing. Hope to do something totally new :idea:
by matti
Mon Oct 02, 2017 10:56 am
Forum: Pneumatic Cannons
Topic: QEV 200bar helium canon
Replies: 10
Views: 943

Re: QEV 200bar helium canon

Wow great. Always handy to have somebody that also uses metric. Not that imperial is an issue, but i can always convert things. But it sometimes is easier for me to learn, if i read tutorials etc then i get a faster idea in my head on wall thickness etc. But i guess people have the same issues if t...
by matti
Sun Oct 01, 2017 11:14 pm
Forum: Pneumatic Cannons
Topic: QEV 200bar helium canon
Replies: 10
Views: 943

Re: QEV 200bar helium canon

I could probably help. I have a vey nice stainless steel 1/2 " T fitting with very thick walls well suited for high pressures. I could machine suitable parts for it from stainless steel to make a piston valve from it. I'm a professional cad designer and cnc machiner. (I'm from Finland, so metric uni...
by matti
Tue Jul 04, 2017 11:08 pm
Forum: General How-To & Discussion
Topic: "In the world of spuds today"
Replies: 2411
Views: 136823

Re: "In the world of spuds today"

Still here, arrived when I was 12 and now I'm 20. Time flies. I swear it never leaves you, I still have an odd fascination with valves and pipes and all sorts... I'll build something someday. Nive to hear from you! Same here.. I got here when I was 15 and now I'm close to 27. I can't even look at l...
by matti
Wed Jun 28, 2017 11:08 pm
Forum: Pneumatic Cannons
Topic: Vortex Cannon design need help
Replies: 6
Views: 902

Re: Vortex Cannon design need help

faster valve and smaller chamber is the way to go.. Not my fist time building vortex cannon...

Image
by matti
Wed Jun 28, 2017 11:11 am
Forum: Pneumatic Cannons
Topic: Vortex Cannon design need help
Replies: 6
Views: 902

Re: Vortex Cannon design need help

Welcome!

I'm pretty sure you have too large chamber for that size nozzle.. you might also want to upgrade to QEV (quick exhaust valve), like the other one that Jack linked.. actually the smaller cannon linked is quite exactly what you probably want..
by matti
Tue Jun 20, 2017 6:25 am
Forum: Pneumatic Cannons
Topic: Rotation mechanism Revolver pneumatic
Replies: 7
Views: 1035

Re: Rotation mechanism Revolver pneumatic

Welcome!

Solar here build a launcher called Eclipse, search it with the forum search and you will find lot of information about similar system.
http://eclipsedefense.com/products.html
by matti
Fri Jun 09, 2017 1:30 am
Forum: BB, Airsoft, and Pellet Guns
Topic: BFG #7
Replies: 57
Views: 6830

Re: BFG #7

Not sure how I did miss this.. at least the latest pictures :D Fantastic job :alien:
by matti
Tue Apr 18, 2017 4:02 am
Forum: General How-To & Discussion
Topic: Hello From New Member
Replies: 10
Views: 909

Re: Hello From New Member

Hello! new members are always welcome here! I have been member here for about 12years and still visit nearly every day :D
by matti
Sat Mar 11, 2017 1:21 pm
Forum: Ammo & Parts
Topic: The Offcial Machinist Thread: Revised 01/04/2014
Replies: 1095
Views: 65080

Re: The Offcial Machinist Thread: Revised 01/04/2014

Just a showcase of some stuff I have created, not really machined, more like sculptered, I only have access to a decent drill press, the rest is all hand tools. Mostly not spudgun related parts. If your'e patient and good with tools it's surprising what you can make. Very nice work! It would ne nic...
by matti
Sun Feb 26, 2017 11:41 am
Forum: SpudFiles Discussion
Topic: Facebook page ?
Replies: 7
Views: 1698

Re: Facebook page ?

It had one, not probably official one but anyway.. I remember it was quite dead and probably that way it's removed or something.