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Re: [PSUBS-MAILIST] Push Pull Cable Rudder Control Means

Hi Frank
I pulled my actuator apart today and was surprized how flimsy it was. Plastic gears etc, I'll definitely have
to oil compensate it to equalize the 78lb water pressure that will be on it at 300ft, not to mention double that at test depth.
By recollection these things slow down a fare bit under load, so it will operate slow on the outward stroke & fast on the inward stroke at depth
without compensation.
The motor is sealed as I feared but has some holes round it that will let oil in slowly. Hopefully I'll get most of the air out. There are a couple of
small micro switches on a circuit board that can't be potted & with luck they'll take the pressure, but they could be a weakness that could show
up any time.
Will take progress photos of the oil compensation & let you know how it works out.
Regards Alan
----- Original Message -----
Sent: Thursday, June 25, 2009 3:01 AM
Subject: Re: [PSUBS-MAILIST] Push Pull Cable Rudder Control Means

Thanks Alan. That's inspiring! It seems it wouldn't be a big problem to oil compensate one of those. I don't think you'd need to protect the motor from the oil. If a trolling motor works while filled, the actuator motor should be fine too. Sounds like some of the guys are using WD40 as compensating oil. The only thing I'd worry about there was compatability with the wire insulation. Keep me informed on how that actuator works out. Frank D.