Search found 342 matches

by Gepard
Wed Dec 26, 2007 5:12 pm
Forum: Ammo & Parts
Topic: Is this legal?
Replies: 58
Views: 3258

@Jimmy I would counterweight the rocket by filling the nose cone with clay or something easy to pack in there to that it flies straighter out of the barrel Don't fill the nosecone with clay as it'll make it nose heavy and even more likely to tumble/point down before ignition making it extremely dan...
by Gepard
Thu Nov 01, 2007 1:19 pm
Forum: Pneumatic Cannons
Topic: HEAL 320psi 20mm copper cannon (now with damage videos)
Replies: 163
Views: 24133

ammosmoke wrote:How did you end up spending $600 on that?
Welcome to the UK, the place where everything costs shedloads more.
by Gepard
Sun Oct 28, 2007 9:22 am
Forum: Pneumatic Cannons
Topic: 75mm Piston with 2" Porting
Replies: 26
Views: 3957

Very nice.

Mark,

M6 is the threaded rod size (M(etric) 6(mm))

The Tee is rated to 1.6MPa IIRC - 16bar.
by Gepard
Fri Oct 26, 2007 2:23 pm
Forum: General How-To & Discussion
Topic: 2nd fitting save
Replies: 8
Views: 1480

I'm thinking for fittings around 4", which when your the other side of the pond they cost a bomb.

And if your careful then you won't bore out too much.
by Gepard
Fri Oct 26, 2007 1:03 pm
Forum: General How-To & Discussion
Topic: 2nd fitting save
Replies: 8
Views: 1480

Best way is to cut the pipe off and then bore out the pipe very accurately on (ideally) a mill.
by Gepard
Tue Oct 23, 2007 4:08 am
Forum: Pneumatic Cannons
Topic: The True Power Of A Piston Valve
Replies: 35
Views: 1735

:lol: When you test something you want to test it above what you use it at regularly. A normal SG, when fired has a massive amount of shock on it. So when you test it you should put it under alot of shock as if your firing it. (I'm talking about chamber testing here) But only enough shock to test it...
by Gepard
Tue Oct 23, 2007 3:44 am
Forum: Pneumatic Cannons
Topic: The True Power Of A Piston Valve
Replies: 35
Views: 1735

<snip>@Gepard Increased shock isn't such a great idea, as it weakens the gun for the next time you use it. Although, what you are describing probably isn' that big a deal. <snip> I disagree I think for testing you should create as much as stress as possible short of damaging it. Everytime you fire ...
by Gepard
Mon Oct 22, 2007 3:34 pm
Forum: Pneumatic Cannons
Topic: The True Power Of A Piston Valve
Replies: 35
Views: 1735

I test all my things at 125psi first time.....if you use water there's no risk and you can cycle the pressure much quicker which increases the shock to the materials.
by Gepard
Mon Oct 22, 2007 2:37 pm
Forum: Off-Topic Hobbies
Topic: Website Tracking.
Replies: 26
Views: 1340

or, you can just have your computer continuously change its IP address... My friend's uncle's computer changes its IP 5 times a minute. There is no way to track that... You can't change the web address of a permananent site. How would any other computer on the internet find your web site if it's ad...
by Gepard
Mon Oct 22, 2007 2:03 pm
Forum: Pneumatic Cannons
Topic: The True Power Of A Piston Valve
Replies: 35
Views: 1735

How do you turn PVC into a plastic? Surely it already is.......
by Gepard
Mon Oct 22, 2007 2:01 pm
Forum: Pneumatic Cannons
Topic: Where to find a huge sprinkler valve to modify
Replies: 28
Views: 1004

I'm building a twin 3in ported cannon now and the piston valves alone cost alot to make nevermind the sprinklers.
by Gepard
Mon Oct 22, 2007 10:26 am
Forum: General How-To & Discussion
Topic: Widening a chuck
Replies: 7
Views: 503

Some drills you can unscrew the chuck and screw on a small lathe chuck.....

Dunno which ones though.
by Gepard
Mon Oct 22, 2007 9:24 am
Forum: General How-To & Discussion
Topic: Widening a chuck
Replies: 7
Views: 503

What you trying to hold? And what size?

If you can hold it from the inside then you can use two blocks of wood and clamp a piece fo rubber between them. Then if you tighten it the rudder will hold the piece whilst the wood should take up the force.
by Gepard
Sun Oct 21, 2007 4:34 pm
Forum: General How-To & Discussion
Topic: Anyone do 3D modelling?
Replies: 24
Views: 1298

Thanks guys,

Matt (sandman) will be doing the models and Jo's brother has said he'll provide the formulas for the simulating side of things. Just waiting on him now and then Matt and I can finish it.

Michael
by Gepard
Tue Oct 16, 2007 4:17 pm
Forum: SpudFiles Discussion
Topic: impromptu "challenges"
Replies: 25
Views: 1414

Sub forum?


Length