Pneumatics

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Team Nuclear
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Pneumatics

Post by Team Nuclear » Sat Oct 23, 2010 1:32 pm

I'm off the FRA and have several robots I know my stuff.
But where can I a pneumatic set suitable for a ant?

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Post by josh » Sat Oct 23, 2010 1:48 pm

There isnt really anything comercially available anymore, you could look into pneumatic air retracts for rc planes or lego pneumatics but really best bet is to start machining.
try: www.giantcod.com or www.hobbyking.com
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Jonny
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Post by Jonny » Sat Oct 23, 2010 2:46 pm

i can sell you lego pneumatics if you want
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Shakey
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Post by Shakey » Fri Oct 29, 2010 3:43 pm

Didn't think It warranted a new thread. Would this do for an actuator?
http://www.hobbyking.com/hobbyking/stor ... oduct=8352
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Jonny
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Post by Jonny » Fri Oct 29, 2010 5:35 pm

it looks good but there is no information on what pressure it can take
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Post by muchalucha » Fri Oct 29, 2010 6:09 pm

Nice find there !!, Most rc stuff ive come across operates at about 60 psi so at a guess id say 50-60 psi to be safe. Just from the looks of it id say that could take 60 psi but you cant relly be sure until youve bought it of course. Thanks for finding that, bookmared :D.
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bitternboy
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Re: Pneumatics

Post by bitternboy » Fri Sep 16, 2011 8:29 pm

Just wondering if anyone had used on of these before and if they knew what pressure rating it is...
http://www.giantcod.co.uk/operated-swit ... 03734.html
Sorry for using an ancient thread.

EDIT: and also, this cylinder appears to be double acting. Could I convert it by plugging the second port and putting elastic on the thing it would be firing be it flipper, claw etc.?
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Team Nuclear
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Re: Pneumatics

Post by Team Nuclear » Sat Sep 17, 2011 11:43 am

I use that valve and it works at 8bar(ish) it isnt the best valve as it has a useless flow rate
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Re: Pneumatics

Post by Andrew_Hibberd » Sat Sep 17, 2011 9:12 pm

That valve is rated at 8 bar and the behemoth guys have used it in vx since AWS13. It should be ok up to 200psi. Technobots sell rams that are ok for 145psi. I acurrently working on the new anticide which is using a lego ram
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bitternboy
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Re: Pneumatics

Post by bitternboy » Sun Sep 18, 2011 9:15 am

Team Nuclear wrote:I use that valve and it works at 8bar(ish) it isnt the best valve as it has a useless flow rate
Would that mean I'd be restricted to a slow flip?
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bitternboy
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Re: Pneumatics

Post by bitternboy » Mon Sep 19, 2011 10:39 am

Also, I forgot to link in the ram I was looking at...
http://www.technobotsonline.com/9.5mm-c ... troke.html
Advisable?
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Re: Pneumatics

Post by peterwaller » Mon Sep 19, 2011 10:58 am

That ram is requires compressed gas to move in both directions so you only get half the number of flips than for one that is spring return.

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bitternboy
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Re: Pneumatics

Post by bitternboy » Mon Sep 19, 2011 11:00 am

If I used a 3 port valve to fill it, leave the second port on the ram open, and put an elastic return on the flipper, would that work?
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Re: Pneumatics

Post by Andrew_Hibberd » Mon Sep 19, 2011 1:33 pm

That ram would be good, anticide used the 25mm version. That 5 port valve would give you a good flip if you can move the piston fast enough. Needs a servo to activate it.

If you fill the robot with a 3 port valve you need to block the 3rd port or you will vent the robot when you disconnect the pump. Have a quick read of the anticide thread here for ideas: http://robotwars101.org/forum/viewtopic.php?f=1&t=1262

I have almost all the parts for two new anticides, lets hope I can get one running in the next few days for the RCFC.
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Team Nuclear
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Re: Pneumatics

Post by Team Nuclear » Mon Sep 19, 2011 5:08 pm

im going to make a cylinder for my pneumatic ant which will be 20mm bore 30mm stroke,
What should I use for the seals?
Also I'm looking for a 3/2 solenoid valve that weighs <15g and is under £50 so if anyone could post me a link to one that would be great.
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