[Robotgroup] Ponginator work night

[brooksdesign]

the most important factor is the bore diameter and leighth of hoses conecting the parts .I may have an extra 3/8ths bore MAC high speed valve I got for the martial arts robot .I'll find and test it and if it works I'll get it into town sometime this week .
-brooks

-----Original Message-----
>From: Richard Abbott <dlluwh at sbcglobal.net>
>Sent: Sep 28, 2007 10:04 AM
>To: robotgroup <robotgroup at puremagic.com>
>Subject: [Robotgroup] Ponginator work night
>
> 
>  I appreciate all of Ed's hard work and thinking that have gone into this project. I didn't think it would be a piece of cake. Too bad you couldn't make it to the meeting last night. The surprise strippers were a real hit. Anyway, I just cleared it with the owner and he agreed to let us come to my work tonight and do our experimenting here. He is concerned about injury and legal issuse so I am going to draft some sort of " If I am injured, it's my own fault and I will not sue" document to ease his mind somewhat. I know we are a careful bunch, but stuff happens. So anybody who is interested in this and wants to throw their $.02 in, can come to my shop tonight from 7:00 till we decide to call it. The address is Randolph Austin Company, 2119 FM 1626, Manchaca
>
>Ed Xavier Gonzalez <ohlaser at swbell.net> wrote:
>  Well . . . I hate to send bad news, but, the results this evening 
>(actually, Friday morning at 01:00 AM) were a bit less than stellar (I've 
>been reviewing various websites to see if there is more to learn, so the 
>time is MUCH later than the actual start time of this note).
>
>Connecting the valve directly to the compressor, then the 1.5" pipe to the 
>valve and cranking the pressure up to 120psig+, the most I got was a measly 
>six feet before the ball hit the floor. I think the reason for the 
>lackluster performance is the total VOLUME of air, not the air PRESSURE 
>going through the valve body.
>
>After reviewing some of the designs previously sent, they all seem to 
>prefer a straight-through valve with a 90 degree shutoff directly connected 
>to an air bladder with the inside diameter of the valve that is the same as 
>the inside diameter as the pipe, or a MUCH larger valve body so there's no 
>internal flow limitations such as a water sprinkler valve. Of course, 
>everything needs to be as close to the maximum size of the output diameter 
>of the pipe as is feasible to minimize constrictions of the air flow. This 
>results in a full release of air with no restriction and an immediate 
>impulse of the entire volume of whatever storage cylinder is 
>installed. That's how they can get such incredible distances from all 
>their designs. A limitation they don't discuss is the 'single fire' nature 
>of their plans, so doing this multiple times will require multiple barrels 
>and lots of loading. Since I don't have a specific 1/2" to 3/4" pipe 
>adapter, I wasn't able to try the 24VAC sprinkler valve that's in the box, 
>Vern.
>
>I'd like to bring what I've tried to Vern's house Friday evening (if he and 
>all of you are available and interested), so you can see what I've 
>done. The only thing I'd ask is that we restrict our happy band to persons 
>over twenty years old so we can stick to accomplishing the goal rather than 
>children playing games and wasting time (I get REALLY grumpy when I work 
>until 2:20AM, huh?).
>
>Maybe I'm missing something in the simple connections I've made, so I plan 
>on getting the adapter previously mentioned and possibly a straight through 
>1.5" diameter shutoff valve if I can afford it, and stick each of them 
>inline without the existing electrical valve body. The manual valve will 
>make controlling the release essentially a manual process rather than 
>computer controlled, so the sprinkler valve might still be a viable option, 
>but it will require a 24VAC doorbell transformer to power it.
>
>I'd still like to consider trying the spring-steel/motor and the spinning 
>wheel designs if the sprinkler design doesn't work, so if someone else 
>would like to take over the pneumatic design so there can be parallel 
>attempts, now is the time to jump up and wave.
>
>Hey, Vern? You up to another group of people wandering aimlessly around 
>your garage late in the day? How about Saturday? You guys up for another 
>adventure at Vern's if he's up to it?
>
>
>
>Ed Xavier Gonzalez
>Oak Hill Laser
>ohlaser at swbell.net
>(512) 288-5243
>
>
>_______________________________________________
>Robotgroup mailing list
>Robotgroup at puremagic.com
>http://lists.puremagic.com/cgi-bin/mailman/listinfo/robotgroup


________________________________________
PeoplePC Online
A better way to Internet
http://www.peoplepc.com