Search found 111 matches

by Gunner
Tue Nov 06, 2012 5:18 am
Forum: Hybrid Cannons
Topic: +20x piston hybrid
Replies: 5
Views: 2205

OK, thanks for good answers. What is max ratio(piston area:"thin area") that is safe to use? I think that 6 sounds ok, but 7-> sounds risky because if the piston is too loose, it leaks so much that the piston wont open? If think that Im gonna use spool valve, because Im afraid that the dead volume i...
by Gunner
Wed Oct 31, 2012 3:05 pm
Forum: Hybrid Cannons
Topic: +20x piston hybrid
Replies: 5
Views: 2205

+20x piston hybrid

As you can see the title, Im designing high mixture hybrid and one thing that is the "problem" is this: What kind of piston area ratios you guys use? I know that the area backside of the piston must be much bigger than the area of frontside of the piston which seals the barrels(the little area that ...
by Gunner
Fri Oct 26, 2012 8:44 am
Forum: Hybrid Cannons
Topic: Smallest possible size high power ingition module?
Replies: 6
Views: 2219

OK Thanks, but there are only two possible choices that I could use, Triggered spark gap or Trigger transformer spark but the trigger transformer spike is way too weak for this use I have tested it earlier, it sou weak that it doesnt ignite the main spark. Im going to find very small car or motorcyc...
by Gunner
Fri Oct 26, 2012 7:02 am
Forum: Hybrid Cannons
Topic: Smallest possible size high power ingition module?
Replies: 6
Views: 2219

No and like I said, I would need also with camera flash somekind of ignition coil and cars ignition coil is wayy too big. :)
by Gunner
Fri Oct 26, 2012 5:27 am
Forum: Hybrid Cannons
Topic: Smallest possible size high power ingition module?
Replies: 6
Views: 2219

Smallest possible size high power ingition module?

So im wondering what is the smallest possible size yet powerful enough to ignite 30x mix? I know that I have to use max like 1mm spark gap and it must be much more powerful than like bbg ignitor. Basic disposable cam+ingition coil doesnt work because this circuit have to be very small. I dont have s...
by Gunner
Fri Jan 29, 2010 3:38 am
Forum: General How-To & Discussion
Topic: 4mm ETG
Replies: 53
Views: 10494

245Tommy: Any ideas of output velocity?
by Gunner
Thu Jul 09, 2009 10:28 am
Forum: General How-To & Discussion
Topic: My compressor, 300 psi and more (..... much more :-D )
Replies: 169
Views: 64948

POLAND_SPUD: Are yours compressors made by Danfoss?
by Gunner
Mon Jul 06, 2009 4:15 pm
Forum: General How-To & Discussion
Topic: My compressor, 300 psi and more (..... much more :-D )
Replies: 169
Views: 64948

POLAND_SPUD: Were yours all compressor able to get to 40bar or more? :D
by Gunner
Mon Jul 06, 2009 3:41 pm
Forum: General How-To & Discussion
Topic: My compressor, 300 psi and more (..... much more :-D )
Replies: 169
Views: 64948

Crap...my fridge compressor cant go higher pressures than 20bar :evil:

Edit:Sorry, I didnt remember that double-posting isnt allowed :D
by Gunner
Thu Jul 02, 2009 10:15 am
Forum: General How-To & Discussion
Topic: My compressor, 300 psi and more (..... much more :-D )
Replies: 169
Views: 64948

Haa...I finally got my fridge compressor :D Ill have to test it later today, my test target is 0.5liter plastic bottle :)
by Gunner
Tue May 12, 2009 4:03 am
Forum: Pneumatic Cannons
Topic: Homemade high pressure pump
Replies: 2
Views: 1016

Homemade high pressure pump

Hey! I quickly drew this scetch http://www.aijaa.com/v.php?i=4183888.jpg and I have little question from it. Because that pump should work when you push the piston down, but how about then when you pull the piston back, how the "new air" gets into the pump chamber? Should I do the somekind of check ...
by Gunner
Sat Jan 17, 2009 2:33 pm
Forum: Hybrid Cannons
Topic: 1/4 ballvalve max. pressure?
Replies: 9
Views: 1770

1/4 ballvalve max. pressure?

What do you think that if I make 30x mixture and Ill use that valve so does it handle it?
by Gunner
Sat Sep 06, 2008 6:31 am
Forum: Hybrid Cannons
Topic: 10mm Hybrid cannon
Replies: 44
Views: 15415

Thanks...I think that this is much easier because you just have to weld a big nut to your chamber and then just get a big bolt and weld your barrel to it :wink:
by Gunner
Mon Sep 01, 2008 1:37 pm
Forum: Hybrid Cannons
Topic: 20x-30x hybrid gun
Replies: 35
Views: 6443

Just formed crack.
by Gunner
Sun Aug 31, 2008 11:59 am
Forum: Hybrid Cannons
Topic: 20x-30x hybrid gun
Replies: 35
Views: 6443

OK, here is the picture from cracked chamber:
Image
:D