pic: 2528 RoboDoves 30 sec, 30 point climb

[Andy A.]

Originally Posted by karpiron

We carry 256 cu in air storage. Stroking a 2" x 24" and (2) 1.5" x 12" cylinders consumes A LOT of air. We have to wait a full minute.

Have you explored using a dual working pressure solution? Actuating the unloaded portion of a cylinders movement (in this case the extension) with lower pressure air, say 15psi, can result in some huge air savings while still allowing you to actuate at a full 60psi in the loaded direction (retraction).

It does require more overhead in the form of additional regulators, tubing, fittings, solenoids etc., but may allow you to climb faster and/or reduce your storage requirements.

[Madison]

Isn't it disingenuous to say that it climbs in 30 sec. if it cannot work without waiting for the air tanks to refill?

Am I missing something?

[karpiron]

Yes, we did.
Our concern was risking rotation of the 2" cylinder's main hook.
We operate at 45 psi and the hook is nicely firm; 20 psi doesn't have the same resistance to twist.
We couldn't find a 24" stroke gas spring.


Madison:
Deceptive maybe. not disingenuous.