[PSUBS-MAILIST] Marine trim tab actuator

[hank pronk via Personal_Submersibles]

 Most electric actuators are ip65 or ip66, so they can be sprayed with water.  You can get ip69 rated so they can be submerged is all.  I am making a version that can handle 500 feet without extra compensating.  The actuators will be under a constant internal pressure all the time.  The internal pressure is not to prevent leakage but rather to reinforce the light body.  I will put one in my chamber and see if the internal pressure is actually needed.  I am just planning ahead and expect to add air.Hank
    On Wednesday, October 4, 2017, 10:05:49 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Brian,can't remember off hand but I don't recall them being able to besubmersed too far. They are regarded as waterproof!We had a good look at the Lenco trim tab actuator a number ofyears ago, with Frank giving a talk on electric linear actuators at a Psub conference.I fibreglassed over one & oil compensated it. I was going to mount a rubber boot over the piston, but gave up on it.Hank is looking at making up his own compensated actuator foran electric manipulator. ( hope that wasn't a secret Hank) Alan
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On 5/10/2017, at 4:15 PM, Brian Hughes via Personal_Submersibles <personal_submersibles at psubs.org> wrote:



The electric version. Anyone know if they'd be water proof at depth?



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