pneumatic help

[mattsdragons]

i would like some pictures of peoples various pneumatic systems (lifters and flippers) and lists of all the parts needed for a LP pneumatic system?

also, would anyone with some good experience with pneumatic be able to almost mentor me and help we through building and answer questions? (which there will be a lot of probably)

[jonny]

Re: pneumatic help

i can help you with pneumatics if you want

[mattsdragons]

Re: pneumatic help

can anyone give me a good lost with some specifications for different parts for a LP pneumatic system?

if i positioned the ram right etc i should be able to flip other robots in the air etc?

[jonny]

Re: pneumatic help

providing you have enough flow/bore/stroke/pressure yes . would you like a list of everything for a low pressure pneumatic setup?

[mattsdragons]

Re: pneumatic help

would be helpful

[jonny]

Re: pneumatic help

for the setup i used:

regulator
5/2 solenoid valve
push fits + 8 and 12mm tubing
pneumatic ram (sometimes called a pneumatic cylinder)
2x 2kg co2 tanks (1 buffer 1 reservoir)
1 x smaller regulator ( to save gas on flipper return)
a load of guages connectors and adapters
battleswitch
ball valve for venting gas
PRV
2 quick exhaust valves

i may have forgotten 1 or 2 things

[jonny]

Re: pneumatic help

Regulator- turns fully pressure co2 into low pressure co2

5/2 solenoid valve- changes/stops the flow of co2. 5/2 means 5 port 2 way. 1 port for input, 2 ports for exhaust, and 2 outputs. when the solenoid is energised the flow changes from output 1 to output 2 and excess co2 is vented. hard to explain see: http://howto.killerhurtz.co.uk/pneumatics.htm

push fits- go into ports and hold tubing.

pneumatic ram- for double acting (uses co2 to go up and down) co2 goes in 1 end and ram extends, co2 goes into other end ram goes down.

co2 tanks- hold co2, the main tank with the full pressure co2 is reservoir, the tank with low pressure co2 is called the buffer

smaller regulator- turns low pressure co2 to even lower pressure

guages- to measure the pressure

adapters- to fit stuff together

battleswitch- plugs into your receiver and is used to control a solenoid valve

ball valve- a small valve i used to vent the pressure from the low pressure system ( this is mandatory)

prv- vents the gas if the pressure gets to high. ie if your system is a 10 bar one set the prv for 11bar, if 11bar is reached the prv will release gas. prv= pressure releif valve

quick exhaust valves- hard to explain, see the link i sent you.

[mattsdragons]

Re: pneumatic help

everything for a LP system used, and not HP. can you tell me if these diagrams of the systems and parts lists are correct and my understanding of were a buffer tank goes. And the funny things on the buffer tanks are T-fittings but it dawned on me after photgraphing it arrows would be better so ignore the pipe type things above the T-fittings


single acting system:
parts list:


were i think the buffer tank goes:



double acting system:
parts list:


and again, were i think the buffer tank goes:


full shot of the system diagram:


(Note, all images cortesy of Building Bots 'designing and building warrior robos' 2 by William Gurstelle)

[blazerbotics]

Re: pneumatic help

buffer tank is after the regulator, number 7 on that picture is a buffer tank (although called an acumulator). Check out http://howto.killerhurtz.co.uk/pneumatics.htm and woodys pages http://www.teamonslaught.fsnet.co.uk/pneumatics.htm http://www.teamonslaught.fsnet.co.uk/pneu.htm

[woody]

Re: pneumatic help

http://www.teamdavinci.com/understanding_pneumatics.htm

[mattsdragons]

Re: pneumatic help

I'm now leaning more towards a single acting ram system and going on advice, by placing the ram correctly I should be able to get a flipper that is very close to some high pressure systems.

[mattsdragons]

Re: pneumatic help

So he buffer tank is normally empty until the regulator has enough gas, the gas from the regulator goes to the tank were it sits until the 'normally closed 2 way valve' is opened and then it rushes out into the ram?

[woody]

Re: pneumatic help

So he buffer tank is normally empty until the regulator has enough gas, the gas from the regulator goes to the tank were it sits until the 'normally closed 2 way valve' is opened and then it rushes out into the ram?

I'm not sure what you mean by normally empty ..it's an empty tank that is filled from the main co2 tank via the pressure regulator at the start of a fight....

The regulator supplies gas at the set / required pressure...it can be ANY type of pneumatic valve.

[mattsdragons]

Re: pneumatic help

ah, after re-reading the whole thing about 3 times i think i understand how it all works