Pneumatic

[wazio]

Just going to run a 1/4 npt tap through it when it comes... From Belgum, um... should take like a month :-p

Run a 1/2 tap through it Chad, 1/4 if for the weak With a 1/2, you should theoretically get 4 x the flow rate over a 1/4. More Flo is good

Marauder has a 70mm bore ram with a 25mm Burket valve on it running with full pressure CO2 and it rockets bots around...
http://www.robowars.org/forum/album_pic.php?pic_id=478http://www.robowars.org/forum/album_pic.php?pic_id=478
http://www.robowars.org/forum/album_pic.php?pic_id=909http://www.robowars.org/forum/album_pic.php?pic_id=909
Marauders ram/valve

[wazio]

woops, that should have been 1/2.... I am actually thinking of making my bot look something like Marauder. I will have the 4 angled sides and then weld up some Ti tube into the fork assembly. Should look something like complete controls front end. I am thinking 6.5 Tall x 15 x 12 All ish. Armor is probably going to be a kevlar shell with some Ti attached to the bottom. As soon as I get the cylinder I will make the CAD. The gears are starting to turn. I need to have it done by Feb next year! :-p

~Chad

Been a while since I have made a post! But I got my Mario cylinder yesterday in the mail and it is now time to start building I guess. Their is a pic of the valve and cylinder on my profile. I need to order the fittings that I will need and another on/off valve to meet the RFL rules. Anybody know a good on/off that is rated for more than 600PSI? All the ones that I have found on McMaster are only good for 600. I orderd 2 of the new banebot gearmotors for the drive.. ( http://banebots.com/osc/product_info.php?cPath=36_63&products_id=224http://banebots.com/osc/product_info...roducts_id=224 ) I also have a 3 cell 11.1v 2600 Li-p batt that will make this beast move. The shape will be kinda like the auzi bot I think. I am also going to get a little RC gizmo made that will open the vlave for a set time, in order to save Co2. I will just hit the button on my radio and the valve will open for .5 Seconds (or whatever time I want) then close again. It will also boots the voltage to the vavle @ 30v. What do you all think is a good time for the valve to be open? .5 seconds, .3, 1.0, .43957693? With any luck I should be able to fire the cylinder in a week or so. Any tips or comments are welcome. Thanks!!!

[philip_taylor]

You could try a paintball valve for an on/off valve (assuming you dont want high flow). There are ball valves available that are rated to 1000 psi. I have a 3/4 inch one that weighs about 300 g.

I replaced the 24 v coil for a 12 v coil on mine so that I could fire it from 18 v.

Well, I got all my brass fittings but the tanks will not screw into the 1/2 NPT fitting. I thought that the tanks were 1/2 NPT. Anyobdy know what the thread size is on the outter and innter of most paintball tanks?

CGA 320
Cylinder valve outlet thread: .825 - 14 TPI

1/2 NPT .840 - 14 TPI
1/2 BSP .825 - 14 TPI

Also known as an ASA Thread


(Message edited by woody on November 24, 2005)

5/8-18UNF-2B http://www.catalinacylinders.com/http://www.catalinacylinders.com/

[wazio]

Ok, Well I am ready to test everything... But I need some info on this burket. Is this a NO or NC valve? I hooked everything up and it seems to be a NO valve... I thought it was NC. Anybody care to tell me what it really is? Thanks!