Bimba Cylinder Dimensions

[Adam.garcia]

Hello all!

I have been designing a custom two speed gearbox, and I have a question regarding the dimensions of the bimba cylinders.

What is the total length of this bimba cylinder while fully retracted? Fully extended?
http://www.andymark.com/product-p/am-0292.htm


What exactly is the difference between these two bimba cylinders?
http://www.andymark.com/product-p/am-0292.htm
http://www.andymark.com/product-p/am-0591.htm

Does the latter maintain an extended position when no air is pumped into the cylinder? If so, can the spring-style cylinder be used as a fail safe, in the event that the pneumatic system ruptures or the robot is undergoing a stall load situation?

Thanks everyone!