Pneumatics

[bitternboy]

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

[peterwaller]

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.

[bitternboy]

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?

[Andrew_Hibberd]

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.

[Team Nuclear]

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.

[bitternboy]

Would it vent? I was thinking putting a one way fill valve into the system so no worries about unwanted venting. Surely I'd need the 3rd port for exhaust.
I was thinking of putting the cylinder into the central valve, the tank into the right port and leaving the 3rd open. Position 1 would block the right port (preventing venting (pun not intended)) and leaving the other two open. Position 2 would open the central port and close the exhaust meaning compressed air would flow into the cylinder but out out of the valve. Position 1 would then close off the tank and open the exhaust leaving compressed air to flow out of the cylinder through the exhaust and letting the cylinder contract. Lather, rinse and repeat.

Scuse the long winded explanation I needed to explain it to myself a bit.

[bitternboy]

Oh, and I don't thing this is much different from the other but it's a less awkward shape.
http://www.giantcod.co.uk/operated-swit ... 03732.html

[bitternboy]

What tank size have people found to be suitible? I have to options in mind...

A tank made from 2 lynx bullet aerosols (5ml each): Equivalent to a 10ml can

A 35ml aerosol.

Thoughts?

[Andrew_Hibberd]

Anticides red tank was 2 gold spot breath freshners 11ml each. 22mm diameter 104mm long. This gave a decent number of flips

[bitternboy]

Ok, I'm thinking 3 lynx bullets... problem is, the more of my handywork there is the less reliable it tends to be.