[PSUBS-MAILIST] actuators

[Alan via Personal_Submersibles]

Hank,
You jogged my memory about the actuator being in two separate halves.
How are you going to seal the cable entry? Can you drill & tap for a hose
fitting & send your air & wires in through that?
How are you doing the air compensation; modified second stage regulators
or are you adding over pressure as with Cliff / Hugh's relieving regulator?
Cheers Alan

Sent from my iPad

> On 29/11/2017, at 8:52 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Alan,
> I have just  disassembled my new electric actuator and am extremely please with the way it is built.  It is very light and operates smoothly.  The speed is perfect and about the same as my hydraulic  functions on my current arm.  Air compensating will be a breeze by drilling into the end cap and threading in a fitting.  A second vent hole will have to be drilled in the casing to allow air to move freely between the two halves of the actuator body.  I spent about 250 Canadian for one actuator, so a four function arm would be 1,000 dollars.  I will put it all together and see how it works but I am confident it will be a big improvement on a hydraulic set up both in cost and weight, not to mention complexity.  By adding air compensation, it gives me an excuse to air compensate my vertical thrusters.  I will mount a dedicated air tank for this set up.
> Hank
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