Search found 498 matches

by jhalek90
Sun Sep 13, 2009 9:51 am
Forum: Pneumatic Cannons
Topic: Piston in a Cross cannon
Replies: 19
Views: 2113

Starwars didn't come to mind, a plastic low pressure version of the decimator with the sides rotated came to mind. Actually, I saw the decimator as the glue on this valve was drying... haha I thought i was being sorta original. But i guess not. So, MrC Why would the air chambers be more efficient i...
by jhalek90
Sat Sep 12, 2009 12:31 pm
Forum: Pneumatic Cannons
Topic: Piston in a Cross cannon
Replies: 19
Views: 2113

The 1200FPS reading needs further testing.... but bear in mind that the barrel i used for that test was WAY longer. probably around 5'
by jhalek90
Sat Sep 12, 2009 11:18 am
Forum: Hybrid Cannons
Topic: Just Went Mach 1
Replies: 30
Views: 3417

I love the sound of that last shot.

Congrats mate!!! i am hoping to do the same very soon.(I may already have..... woot)
by jhalek90
Sat Sep 12, 2009 11:15 am
Forum: Pneumatic Cannons
Topic: 1'' Bouncy ball pistol with clip system. With video
Replies: 76
Views: 8354

All right children... i built a chronny: http://www.spudfiles.com/forums/home-made-infared-chronograph-how-to-very-acurate-t19209.html At 120, psi... the most i will take a sprinkler valve up to, i hit around 850 FPS my NEW cannon: http://www.spudfiles.com/forums/piston-in-a-cross-cannon-t19231.html...
by jhalek90
Sat Sep 12, 2009 11:01 am
Forum: Pneumatic Cannons
Topic: Sprinkler Pneumatic Sniper
Replies: 38
Views: 4138

Go back to home depot.... and make a 1'' piston valve. Use a 1'' wood dowel for the piston.. and some rubber from an extra boot for the sealing face... thats what i did... apart from the boot.. lol http://www.spudfiles.com/forums/piston-in-a-cross-cannon-t19231.html In that gun... i put the valve in...
by jhalek90
Sat Sep 12, 2009 10:50 am
Forum: Pneumatic Cannons
Topic: Piston in a Cross cannon
Replies: 19
Views: 2113

Piston in a Cross cannon

So heres what I got: Barrel .5'' or 1'' chambers: APROX (1''x16'') each Piston valve housed in a cross piece.... works juts like a t Pilot... modded 1'' sprinkler valve. This gun was clocked at 1200 FPS with my homeade chrony http://www.spudfiles.com/forums/home-made-infared-chronograph-how-to-very-...
by jhalek90
Sat Sep 12, 2009 10:21 am
Forum: General How-To & Discussion
Topic: Home made infared chronograph How To. Very Acurate
Replies: 31
Views: 14090

jhalek90: How did you launch the bouncy ball? Mach 1 is pretty unlikely, even anything over 1000 FPS is pretty unlikely without a very serious cannon. The second time domain is the time from gate to gate. Usually the sound card won't have any problems with this time (and frequency) domain but the a...
by jhalek90
Thu Sep 10, 2009 4:18 pm
Forum: Pneumatic Cannons
Topic: Sawed-off III, progress pics.
Replies: 36
Views: 7139

Dang. that looks wicked.

Can we see some damage por... i mean pics.
by jhalek90
Thu Sep 10, 2009 4:12 pm
Forum: General How-To & Discussion
Topic: Home made infared chronograph How To. Very Acurate
Replies: 31
Views: 14090

thanks tec. I must post pone my HOW to for A few hours... while i run a few more tests....It would appear that i have a bouncy ball traveling at 1200+ Ft/s is it possible that i have hit mach1?? with a bouncy ball??? This is why i need more tests... i am a little bit, skeptical of that data... altho...
by jhalek90
Thu Sep 10, 2009 2:34 pm
Forum: General How-To & Discussion
Topic: Home made infared chronograph How To. Very Acurate
Replies: 31
Views: 14090

@jimmy: Man, you know what your talking about! 44100 samples each second make a lot more seance. The symbols, i found on google... not sure if they are right... ill fix it when i write up a good how to today. As for the RED leds.... i am going to use infrared to reduce and interference... and also.....
by jhalek90
Wed Sep 09, 2009 9:40 pm
Forum: General How-To & Discussion
Topic: Home made infared chronograph How To. Very Acurate
Replies: 31
Views: 14090

The 1'' bouncy ball pistol. at 35 PSI Thought so, fairly good for such a small launcher and low pressure. Sounds about right, 240fps with that cannon. Yes, i was quite happy with that shot, for only using 35 Psi. haha Here is a simple wiring diagram i just made in photoshop.... not to good... but e...
by jhalek90
Wed Sep 09, 2009 9:15 pm
Forum: General How-To & Discussion
Topic: Home made infared chronograph How To. Very Acurate
Replies: 31
Views: 14090

PS: in the file above, a bouncy ball was clocked at 238.09450... FPS Not bad, what cannon was that with? BTW, if you clean the topic up and make it more clearer and easier to follow with some pictures and diagrams to help, me or another mod might sticky it. There are other how-to's like this, but i...
by jhalek90
Wed Sep 09, 2009 8:17 pm
Forum: General How-To & Discussion
Topic: Home made infared chronograph How To. Very Acurate
Replies: 31
Views: 14090

here are a few samples files. http://img27.imageshack.us/img27/2082/testfile.jpg http://img33.imageshack.us/img33/6599/testfile2.jpg 3 points/0.0005 seconds 1/0.0005=20,000 samples.... but there are 3 per 0.0005 so 20,000x3=60,000 samples/second. If my numbers are correct. PS: in the file above, a b...
by jhalek90
Wed Sep 09, 2009 7:20 pm
Forum: General How-To & Discussion
Topic: Home made infared chronograph How To. Very Acurate
Replies: 31
Views: 14090

jonnyboy wrote:Nice although the website you linked to is jimmy101's (or something like that) I don't know if he posted a how to on it but hes defiantly linked to there before.
I am not trying to claim it as my own design, i said that the site was not my own.

~Jhalek90
by jhalek90
Wed Sep 09, 2009 6:51 pm
Forum: General How-To & Discussion
Topic: Home made infared chronograph How To. Very Acurate
Replies: 31
Views: 14090

Home made infared chronograph How To. Very Acurate

I have been looking around my town for a place where i can use a chronograph, but have been unable to find one. The paint ball store wont test homemade guns, the gun ranges will only test explosive powered, lead flinging weapons. I got the same answer every place i tried. The paintball store, howeve...