Search found 1099 matches

by SpudUke5
Sat Feb 21, 2009 2:24 pm
Forum: Off-Topic Hobbies
Topic: I'm an idiot
Replies: 24
Views: 4866

Klondike? I live on ohio and im not sure what your talking about. We have lake erie in cleveland so we have the lake effect which can alter temperatures and amount of snow.

Its really not that wonderful :(
by SpudUke5
Sat Feb 21, 2009 2:02 pm
Forum: Hybrid Cannons
Topic: Oxy hybrid fueling question
Replies: 15
Views: 2995

Well its a little more complicated than that. When propane, C3H8, combusts it requires 5 moles of oxygen to 2 moles of propane. So for a ratio of how much you need, its a 5:2 ratio of oxygen:propane. So you need 80% oxygen and 20% propane. But you need to account for the 21% of oxygen in the atmosph...
by SpudUke5
Fri Feb 06, 2009 7:43 pm
Forum: Off-Topic Hobbies
Topic: stirrup pump help
Replies: 31
Views: 5312

Also refer to this post. This should clear things up on how the check valve works.
by SpudUke5
Wed Jan 28, 2009 11:37 am
Forum: Off-Topic Hobbies
Topic: Railgun project thread
Replies: 6
Views: 1295

Interesting, i have been researching railguns recently and have put in some thought about making one. But i would still need to learn more about its operation and electronics, but i do know the general concept.

Now can you tell me what are you using a triggered burst disc injection for?
by SpudUke5
Mon Jan 12, 2009 8:30 pm
Forum: Off-Topic Hobbies
Topic: Mr. Commonsense has passed away
Replies: 28
Views: 5453

Common Sense finally gave up the will to live, after a woman failed to realize that a steaming cup of coffee was hot. She spilled a little in her lap, and was promptly awarded a huge settlement. Ah, i remember that, the McDonalds settlement for when a woman spilled hot coffee on herself and then su...
by SpudUke5
Thu Jan 08, 2009 11:12 pm
Forum: Miniature Guns
Topic: pneumatic pen gun v2 - added video
Replies: 34
Views: 18234

Well thats a possibility, that got me thinking. Maybe i can heat the chamber (brass) and then push it through the rubber so that i get a nice piston cut. That might work.
by SpudUke5
Thu Jan 08, 2009 9:24 pm
Forum: Miniature Guns
Topic: pneumatic pen gun v2 - added video
Replies: 34
Views: 18234

I just got some 1/4inch thick rubber from mcmaster, and i cant find a way to cut a nice piston from the rubber so im curious on how you cut such a nice piston shape.
by SpudUke5
Thu Jan 08, 2009 3:28 pm
Forum: Pneumatic Cannons
Topic: Psycix's first pneumatic. (coaxial piston)
Replies: 8
Views: 3423

Well it is about time. It looks nice with clean construction.

What kind of pressure do you use this at?
by SpudUke5
Wed Jan 07, 2009 10:55 pm
Forum: Combustion Cannons
Topic: is alcohol a useable fuel?
Replies: 21
Views: 6710

Well you can do this but it would be better if you did a fuel measurements to find out how much is actually needed for optimal performance. To do this, you just have to do some fairly simple chemistry. The combustion of isopropyl alcohol id as follows: 2C3H8O + 9O2 -> 6CO2 + 8H2O So the ratio of oxy...
by SpudUke5
Sat Jan 03, 2009 2:39 pm
Forum: Miniature Guns
Topic: pneumatic pen gun v2 - added video
Replies: 34
Views: 18234

Looks nice and promising. Now ill prob get the some 1/4 inch rubber so i can finish my pen gun.

By the way, didnt that leave a hole in your wall?
by SpudUke5
Sat Jan 03, 2009 2:22 am
Forum: General How-To & Discussion
Topic: home made compressor (i have reached 1800psi)
Replies: 92
Views: 17574

can we see more pictures of it and the different systems.

This caught my interest when i see that you reached 1000psi.
by SpudUke5
Mon Dec 29, 2008 10:03 pm
Forum: General How-To & Discussion
Topic: Death of a DVD Player
Replies: 27
Views: 3619

Impressive as usual.

Didnt know a plum could do that much damage.

Man i wish it was spring here, i want to make a pneumatic inline cannon.
by SpudUke5
Fri Dec 26, 2008 6:56 pm
Forum: Pneumatic Cannons
Topic: STV ver. 2 clear inline piston valve
Replies: 25
Views: 12737

Truly innovative.

I like it, i may decide to do one like this for myself; i need a new large bore, inline cannon.
by SpudUke5
Thu Dec 25, 2008 8:01 pm
Forum: General How-To & Discussion
Topic: Propane Bottle Adapter
Replies: 7
Views: 2750

Well, not be a stickler, but bcarms has this. I use this on my current propane tank. Works great.
by SpudUke5
Wed Dec 17, 2008 3:26 pm
Forum: General How-To & Discussion
Topic: (new Video!) The Great Spudgun Symphony
Replies: 68
Views: 8911

I think its great for a first time. Most of the beats ran together pretty good so i give it a thumbs up, as well as the first video.