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Re: [PSUBS-MAILIST] Rudder control

Hey Frank

I am using those actuators along with their position control units to work the vent pipes in my trim tanks.  I have some photos of what is inside them on my site.  Go to http://www.submarineboat.com/trim_tanks.htm and then scroll down to "Vent Pipes"

I'd think that building a 1ATM housing will be considerable work and there are several conductors that would have to pass through the hull for each actuator.  You might avoid some work if you used standard hydraulic boat helm parts for your rudder and thruster pitch controls. Somewhere I saw a stick helm (no wheel) that connected to a push-pull cable.  Maybe you could rig a stick to a cylinder on the inside and have that actuate a slave cylinder on the outside.

Good Luck
Doug J
www.submarineboat.com



-----Original Message-----
From: ShellyDalg@aol.com
To: personal_submersibles@psubs.org
Sent: Thu, 14 Aug 2008 9:08 am
Subject: Re: [PSUBS-MAILIST] Rudder control

Hi Guys. Here's the linear actuators I'm considering for rudder control and dive plane/side motor angle control. This approach would mean I can eliminate a hydraulic system with it's pump, tank, and double through hulls for each cylinder. The dive controls and rudder can then be just joysticks and simple, small, electric through hulls which are much easier to keep sealed than two hydraulic through hulls. Just need to fabricate a sealed housing for the actuator. Frank D.
http://cgi.ebay.com/Linear-Actuator-12-Volt-Static-Load-550-LBS-NEW_W0QQitemZ120285093602QQcmdZViewItem?IMSfp=TL0807191162r35270



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