Air Cylinder

[Reggie335]

Is it Okay to use This kind of Air Cylinder

[Tristan Lall]

No. R76 requires a minimum rating of 125 lb/in2.

(That general style of air cylinder appears to be allowable.)

[Reggie335]

No. R76 requires a minimum rating of 125 lb/in2.

(That general style of air cylinder appears to be allowable.)

Are Any of These Okay To use.
http://www.amazon.com/SMC-NCMB125-0600C-Stainless-Cylinder-Mounting/dp/B007P70KO2/ref=sr_1_31?ie=UTF8&qid=1362110699&sr=8-31&keywords=air+cylinder

[Kevin Sevcik]

Weird. There's an exception for solenoid valves rated under 125psi, but not for cylinders. Anyways, Tristan's correct, that's illegal as it's only rated for 100psi.

[Reggie335]

Weird. There's an exception for solenoid valves rated under 125psi, but not for cylinders. Anyways, Tristan's correct, that's illegal as it's only rated for 100psi.

This Is not the Actual Cylinder But I was wondering About The Style. I don't really Know about This Style. Its Has One Air Input Hole and i didn't know if it was okay to use.

(Note: The Maximum Working Pressure is 247 , On our Cylinder )

[Kevin Sevcik]

Single ported spring return cylinder that's rated over 125psi? Sounds like an air cylinder that's rated over 125psi to me.

[artdutra04]

There is nothing in the rules that prohibits the use of single-acting pneumatic cylinders.

[EricH]

This Is not the Actual Cylinder But I was wondering About The Style. I don't really Know about This Style. Its Has One Air Input Hole and i didn't know if it was okay to use.

(Note: The Maximum Working Pressure is 247 , On our Cylinder )

For future reference, that's a spring return cylinder. Air goes in, the spring compresses, the piston moves. Remove the air pressure, the spring shoots the cylinder back to its home position.

As for whether it's OK to use per the rules, I can't find anything prohibiting any type of cylinder (see R78-H) as long as it's appropriately pressure-rated and unmodified.

[Reggie335]

Thanks For The Help, Also Do anybody know were i kind find out how to connect the single-acting pneumatic cylinders to the Single Solenoid

(Note: This Are the kind of Cylinders We are using http://www.amazon.com/SMC-NCMB075-02...s=air+cylinder

[artdutra04]

To use a single-acting with the solenoids usually seen in FRC, just plug the tubing into one of the two outputs of the solenoid and put a plug into the other output.

[Reggie335]

To use a single-acting with the solenoids usually seen in FRC, just plug the tubing into one of the two outputs of the solenoid and put a plug into the other output.

How Can i Plug it.

[artdutra04]

How Can i Plug it.With one of these (http://www.automationdirect.com/adc/Shopping/Catalog/Pneumatic_Components/Pneumatic_Fittings_-a-_Air_Couplings/Threaded_Fittings/Brass_Hex_Head_Plug/BFHHP-18N) if your solenoid has threaded connectors or one of these (http://www.automationdirect.com/adc/Shopping/Catalog/Pneumatic_Components/Pneumatic_Fittings_-a-_Air_Couplings/Push-to-Connect_Pneumatic_Fittings_(Thermoplastic)/Plug/PLUG14) if the solenoid has built-in push-to-connect fittings.

[Kevin Sevcik]

To use a single-acting with the solenoids usually seen in FRC, just plug the tubing into one of the two outputs of the solenoid and put a plug into the other output.Art,
I've seen 5/2 valves out there in FRC. That's actually the style that Vex sells. A 5/2 valve is always sending pressure to one of the output ports. You'll need to plug one of the outputs in that case, or you'll end up dumping pressure to atmosphere when you're exhausting the cylinder. You need either a double solenoid 5/3 center exhaust valve or a single solenoid 3/2 valve.

[Reggie335]

Art,
I've seen 5/2 valves out there in FRC. That's actually the style that Vex sells. A 5/2 valve is always sending pressure to one of the output ports. You'll need to plug one of the outputs in that case, or you'll end up dumping pressure to atmosphere when you're exhausting the cylinder. You need either a double solenoid 5/3 center exhaust valve or a single solenoid 3/2 valve.

Okay Thanks, Also so is it okay to use these Cylinders: http://www.amazon.com/SMC-NCMB075-0400S-Stainless-Cylinder-Mounting/dp/B007P70OD4/ref=sr_1_48?ie=UTF8&qid=1362156733&sr=8-48&keywords=pneumatic+cylinder

[Kevin Sevcik]

Okay Thanks, Also so is it okay to use these Cylinders: http://www.amazon.com/SMC-NCMB075-0400S-Stainless-Cylinder-Mounting/dp/B007P70OD4/ref=sr_1_48?ie=UTF8&qid=1362156733&sr=8-48&keywords=pneumatic+cylinderYou should be able to answer that from what we've covered in this thread, so why don't you tell me what you think the answer is and why, and then I'll tell you if you're correct. Teach a man to fish and all that.

[Reggie335]

You should be able to answer that from what we've covered in this thread, so why don't you tell me what you think the answer is and why, and then I'll tell you if you're correct. Teach a man to fish and all that.

What i have Learn the Minimum Working Pressure Is 124psi. i our cylinder Max pressure is 250psi and the rule don't have any restriction on what type of air Cylinder we use so. I say We Can Use These Air Cylinders

[Kevin Sevcik]

What i have Learn the Minimum Working Pressure Is 124psi. i our cylinder Max pressure is 250psi and the rule don't have any restriction on what type of air Cylinder we use so. I say We Can Use These Air CylindersCorrect! Well. The max working pressure of the cylinder has to be 125psi, but 124psi is close enough, heh. Go forth and select air cylinders with confidence, as you now know all you need to determine if they're legal or not.

[Reggie335]

:D Correct! Well. The max working pressure of the cylinder has to be 125psi, but 124psi is close enough, heh. Go forth and select air cylinders with confidence, as you now know all you need to determine if they're legal or not.

Thank You Very Much For The Help

[Racer26]

Art,
I've seen 5/2 valves out there in FRC. That's actually the style that Vex sells. A 5/2 valve is always sending pressure to one of the output ports. You'll need to plug one of the outputs in that case, or you'll end up dumping pressure to atmosphere when you're exhausting the cylinder. You need either a double solenoid 5/3 center exhaust valve or a single solenoid 3/2 valve.

Not sure why you think that you couldn't run a spring return cylinder on a 5/2 valve.

5/2 single solenoid valves typically used in FRC have 3 ports on the input side (EA, P, and EB), and 2 ports on the output side (A, and B). When the solenoid is not energized, P->A and B->EB. When the solenoid IS energized, P->B and A->EA. If I connect my spring return cylinder's port to B, and plug A (either with a brass plug, or a hose to a T that has a loop of hose between its other two legs), this will work perfectly.

Truly, I have even built a pneumatic system on an FRC bot that could stop in the middle of its travel by using a second valve to control whether or not EA/EB goes to atmosphere.

[Kevin Sevcik]

Not sure why you think that you couldn't run a spring return cylinder on a 5/2 valve.

5/2 single solenoid valves typically used in FRC have 3 ports on the input side (EA, P, and EB), and 2 ports on the output side (A, and B). When the solenoid is not energized, P->A and B->EB. When the solenoid IS energized, P->B and A->EA. If I connect my spring return cylinder's port to B, and plug A (either with a brass plug, or a hose to a T that has a loop of hose between its other two legs), this will work perfectly.

Truly, I have even built a pneumatic system on an FRC bot that could stop in the middle of its travel by using a second valve to control whether or not EA/EB goes to atmosphere.*clears throat*I've seen 5/2 valves out there in FRC. That's actually the style that Vex sells. A 5/2 valve is always sending pressure to one of the output ports. You'll need to plug one of the outputs in that case, or you'll end up dumping pressure to atmosphere when you're exhausting the cylinder.But, of course, if you have a 3/2 valve, plumbing is a lot simpler and less prone to leaks.

[Racer26]

But, of course, if you have a 3/2 valve, plumbing is a lot simpler and less prone to leaks.

True.