Search found 2698 matches

by noname
Wed Dec 23, 2015 1:35 am
Forum: Ammo & Parts
Topic: The Offcial Machinist Thread: Revised 01/04/2014
Replies: 1095
Views: 81915

Re: The Offcial Machinist Thread: Revised 01/04/2014

Hope everything goes well Jrrdw.
Thanks Wyz but I'm looking for someone in the US or maybe Canada. Shipping across the ocean is probably too much for how little work I need done.
by noname
Fri Dec 18, 2015 9:12 pm
Forum: Ammo & Parts
Topic: The Offcial Machinist Thread: Revised 01/04/2014
Replies: 1095
Views: 81915

Re: The Offcial Machinist Thread: Revised 01/04/2014

Is anyone still active in this thread? I've been working on some parts in the machine shop at school but I accidentally graduated and they won't let me back in :(
by noname
Wed Oct 08, 2014 10:05 am
Forum: Off-Topic Hobbies
Topic: "Offtopic-posts-topic" NSFW
Replies: 6630
Views: 330256

Re: "Offtopic-posts-topic" NSFW

Great find Mark! :D
by noname
Fri Sep 26, 2014 10:28 am
Forum: Hybrid Cannons
Topic: New to hybrids
Replies: 67
Views: 9633

Re: New to hybrids

I had a hybrid firing a 6x with two badly tapped 1/4" NPT holes in the main part of the chamber. .One was a mistake hole which had a plug in it and the other had my spark plug in it. Neither hole ever had any problems, which was pretty surprising to me. If I ever had to it again I'd figure out some ...
by noname
Mon Sep 01, 2014 10:26 am
Forum: Pneumatic Cannons
Topic: AP Physics Project
Replies: 9
Views: 1832

Re: AP Physics Project

I could see a tennis ball getting chucked ~50 meters by those specifications. Getting a consistent valve that will seal at 5 or 10 psi will be the trick since that 3 meter shot sounds tricky.
by noname
Tue Aug 19, 2014 8:55 pm
Forum: Hybrid Cannons
Topic: My First Hybrid
Replies: 7
Views: 2169

Re: My First Hybrid

Looks good! Nice simple launcher with plenty of room for reconfiguration and modifications.
by noname
Fri Aug 08, 2014 6:57 pm
Forum: General How-To & Discussion
Topic: Union Mods for Burst Disk
Replies: 3
Views: 1583

Re: Union Mods for Burst Disk

This should be good to go! I'll be able to test fire in a couple weeks when I go back to school.
by noname
Thu Aug 07, 2014 12:06 pm
Forum: Pneumatic Cannons
Topic: Recycling pilot volume
Replies: 9
Views: 1590

Re: Recycling pilot volume

Personally I'd use the air to cycle a magazine; redirecting it to the chamber or barrel wouldn't do anything productive enough. The small pilot volume would be adequate to drive an air cylinder/piston rod though and that could translate to a magazine's elevator or ejecting an old shell and chamberin...
by noname
Fri Aug 01, 2014 3:12 pm
Forum: Hybrid Cannons
Topic: New to hybrids
Replies: 67
Views: 9633

Re: New to hybrids

Yep, a fueling/filling manifold is what I was suggesting.
I've only ever used a ball valve rated to 600 psi, just an ordinary ball valve off the shelf at the hardware store. It's always worked fine, but I've only shot at 6x mixes with it. I trust it would hold up to much higher mixes though.
by noname
Fri Aug 01, 2014 1:24 pm
Forum: Hybrid Cannons
Topic: New to hybrids
Replies: 67
Views: 9633

Re: New to hybrids

I've always liked SB15's method of filling air directly through the fueling manifold. It allows you to only have one valve to shut off the combustion chamber from all the gauges, filling, etc. It also ensure proper mixing, which I had trouble with previously.
by noname
Thu Jul 31, 2014 2:51 pm
Forum: Off-Topic Hobbies
Topic: WhatsApp spudfiles chat ?
Replies: 23
Views: 2860

Re: WhatsApp spudfiles chat ?

Maybe I'm a bit behind the times, but the smallest screen I currently own is a 17" laptop. ;) How about just using a public jabber server ? And I've got a flip phone from 2009! :D The chat we have now works as a chat but it's just so easy to miss people. I'd say it's partly because we're pretty wel...
by noname
Thu Jul 31, 2014 2:43 pm
Forum: Pneumatic Cannons
Topic: 300 psi pneumatic, a couple questions
Replies: 26
Views: 3003

Re: 300 psi pneumatic, a couple questions

Sounds like you're making a rather expensive pneumatic grenade :wink:
I've experienced PVC exploding on a couple occasions and it's never fun. Schedule 80 pipe might be able to handle 200 psi (might!) but I'd be very skeptical/terrified of 300 psi...
by noname
Thu Jul 31, 2014 2:39 pm
Forum: Pneumatic Cannons
Topic: QEV size/barrel diameter relationship
Replies: 3
Views: 898

Re: QEV size/barrel diameter relationship

A sprinkler valve can launch a golf ball pretty well; that's about a 1:2 ratio between the valve and barrel sizes. As long as the valve is decent, half the barrel size seems to work pretty well for casually chucking stuff. If you're aiming for high velocities of course you would want a bigger and be...
by noname
Mon Jul 28, 2014 7:27 pm
Forum: Pneumatic Cannons
Topic: 2" Pnuematic Cannon Build
Replies: 18
Views: 3068

Re: 2" Pnuematic Cannon Build

Looks good so far. If your tire valve feels a little loose or anything, don't worry. Under pressure they generally seal up well because the air in the chamber tries to push the valve out of the pipe.