Single Acting Cylinders or Double Acting Cylinders?

VEX Robotics Competition Discussion VRC > Nothing But Net (15/16)
1

Hi,

I was wondering which one will be better to purchase Single Acting Cylinders or Double Acting Cylinders for this years game?

Thanks,
Yogi

2

Double acting, more compact, plus can be converted to single acting.

3

It really depends on what you are using them for. Single acting pneumatics work well for a task that requires a force in a single direction, while double acting are better suited for a task that requires the ability to have two distinct positions for the part the pneumatics are being used for.

4

I would say double acting cylinders everytime. Here’s why.

With a single acting cylinder, you can have only one setup, powered out and spring return. Whereas with double acting cylinders are a lot more versatile. They can be:
Powered out and powered in;
Powered out and Rubber banded in;
Rubber banded out and powered in.
Also, they are not much more expensive than the single acting cylinders. Only three dollars difference. The double acting solenoids however, cost quite a bit more than the single action solenoid. You only need them if you plan on powering the cylinder out and in.

5

Planing to use it to launch balls mainly for this years game. Also how would you convert the double into single acting cylinder

6

to convert plug the unused solenoid port with a solenoid fitting with an orange plug in it, you can buy it separately on smc website.

7

Thanks everyone for the help. We will go with double acting cyclinder.

8

Power in and no power out
Power out and no power in

This is crucial in making pneumatic lift assist. But I assume you wouldn’t make pneumatic assisted lifts this year.