Search found 1039 matches

by Velocity
Sat Jul 21, 2012 8:50 pm
Forum: Pneumatic Cannons
Topic: what kind of valve is best?
Replies: 13
Views: 2166

Diaphragm valves VS piston valves is an interesting debate. The diaphragm valve (such as the dust collector valve) is clearly superior in opening time (it is, after all, just a very lightweight piston). However, often times diaphragm valves do not allow for full flow. I personally own 5 or so of the...
by Velocity
Wed Jul 04, 2012 11:27 am
Forum: Pneumatic Cannons
Topic: Piston Travel Distance in a Tee Valve
Replies: 10
Views: 1368

Thanks for all the responses. I realize that there may be an easy way to begin testing this subject. If the piston is constructed from threaded rod, the length of the piston can be changed by moving the location of the sealing face. By moving the sealing face forward or backward, it would have the e...
by Velocity
Tue Jul 03, 2012 11:12 pm
Forum: Pneumatic Cannons
Topic: Piston Travel Distance in a Tee Valve
Replies: 10
Views: 1368

Piston Travel Distance in a Tee Valve

I've been thinking about piston travel distance lately. The old rule is that the piston should travel back one quarter of the diameter of the exit for maximum efficiency. This can be easily derived; allow r=radius of the exit port, d=diameter of the exit port, L=piston travel: Flow through area arou...
by Velocity
Sun Aug 22, 2010 1:51 pm
Forum: Combustion Cannons
Topic: 6.3L Wogglecannon
Replies: 12
Views: 2864

Thanks for the responses everyone. With regards to using it as a 2x hybrid, I am surprisingly not inclined...mostly due to the larger diameter pipe, the (thinner) SCH 40 thickness, and to the electrodes being drilled through the pipe alone. I'm a scardy-cat when pressurizing my pneumatic (which has ...
by Velocity
Sat Aug 21, 2010 8:18 pm
Forum: Combustion Cannons
Topic: 6.3L Wogglecannon
Replies: 12
Views: 2864

6.3L Wogglecannon

It’s been quite a while since I posted anything (seems like around two years since I posted any type of cannon). Though I’ve made the occasional thing here and there, college applications and subsequently being at college have consumed most of my free time. I finally found some time to make somethin...
by Velocity
Tue Jun 30, 2009 11:56 am
Forum: SpudFiles Discussion
Topic: Inonickname ads
Replies: 11
Views: 1074

Maybe he did change it...Ads by GoogIe
by Velocity
Thu Jun 18, 2009 11:48 pm
Forum: Pneumatic Cannons
Topic: Homemade Diaphragm Valves
Replies: 5
Views: 2353

Diaphragm valves often have less power than piston valves. While the opening speed is superior due to the low weight of the diaphragm, the flow is restricted.
by Velocity
Fri May 22, 2009 12:01 pm
Forum: General How-To & Discussion
Topic: Special PVC fittings
Replies: 4
Views: 321

I'm pretty sure "furniture grade" is thinwall and not pressure rated. I've seen PVC furniture before, and I don't think I would trust the fittings with pressure.
by Velocity
Thu Apr 23, 2009 11:19 pm
Forum: Off-Topic Hobbies
Topic: Workshop equipment
Replies: 66
Views: 3581

I would have to disagree with Technician1002 and those who support him. I bought a 7x12 Cummins mini-lathe a while back, and I have had no complaints. I have built several piston valves and several other projects, and accuracy has not been a problem. Of course, the larger lathes will probably have m...
by Velocity
Sun Apr 05, 2009 1:59 pm
Forum: General How-To & Discussion
Topic: Calling all POMS! AGAIN!
Replies: 28
Views: 1210

Bid sniping...<a href="http://www.spudfiles.com/spudtech_archi ... mich">good times...</a>
by Velocity
Sat Mar 28, 2009 5:06 pm
Forum: Pneumatic Cannons
Topic: Sneak Peek (56K Warning)
Replies: 14
Views: 2033

I talked to you in the PM's, but not here, so here goes...nice valve :wink: Your building style is very similar to mine...make something decent, realize there is a small cosmetic problem, and build another one to fix the problem...I've currently gone through 4 of these types of valves for one reason...
by Velocity
Fri Mar 27, 2009 7:28 pm
Forum: Pneumatic Cannons
Topic: Pics Now...My First Copper...Soon to be walking cane gun ...
Replies: 19
Views: 4219

Great creation you got there...but the ammo boxes are what makes this post really cool :o
by Velocity
Fri Mar 27, 2009 3:16 pm
Forum: Pneumatic Cannons
Topic: Pics Now...My First Copper...Soon to be walking cane gun ...
Replies: 19
Views: 4219

so...pictures? :wink:
by Velocity
Thu Mar 19, 2009 3:17 pm
Forum: Ammo & Parts
Topic: Spray-Painting Gradients
Replies: 10
Views: 7640

by Velocity
Sun Mar 01, 2009 9:04 pm
Forum: SpudFiles Discussion
Topic:
Replies: 70
Views: 3444

Just wondering, whatever happened to BCARMS anyways? I understand that people were having significant troubles regarding long delays in their orders.