Look at hospital beds.. we get our from ebay.. they run inside on 24 Volts. And normaly have a watertight casing against blood and other human items.. <vbra676539@aol.com> schrieb: > I'm going to try the motor controls from Minn-Kota. We'll see how that works out. Where did you find the servo units? Maybe an American company offers them as well. > Vance > > > -----Original Message----- > From: Emile van Essen <emile@airesearch.nl> > To: personal_submersibles@psubs.org > Sent: Tue, 9 Jun 2009 5:58 pm > Subject: RE: [PSUBS-MAILIST] Subdate / rudder servo > > > > > Hi Alec, > > > > The servo is a 24VDC motor with worm gear/ thread spindle reduction. No electronics are planned and the spindle has a adjustable endswitch. I have a mechanical background so I “avoid” complicated electronics……. > > Zero position is given by a rudderposition Indicator. You know the sensor can be a simple potentiometer > > So all by the KISS rule. However, I understand the benefit of electronic control; I think it is very useful on a sub to have a steering servo that can be linked to the (gyro) compass. > > > > Regards, Emile > > > > > Van: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] Namens Smyth, Alec > Verzonden: dinsdag 9 juni 2009 14:19 > Aan: personal_submersibles@psubs.org > Onderwerp: RE: [PSUBS-MAILIST] Subdate > > > > > > Hi Emile, > > > > I always enjoy looking at the solutions you come up with. Can you tell us more about the servo and it's control electronics? My sub has a PLC on board and I was thinking of leveraging that to control the rudder and dive planes. So far I was thinking of using large stepper motors, and to prevent them from pulling a continuous curr > ent to hold position, the control surfaces are balanced. But a worm gear of course holds it's position without any current draw at all, so is a very interesting idea too. What I'm wondering about is whether or how you ;feed the motor position back to the electronics. > > > > thanks, > > > Alec > > > > > The contents of this e-mail are intended for the named addressee only. It contains information that may be confidential. Unless you are the named addressee or an authorized designee, you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it. > > From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Emile van Essen > Sent: Sunday, June 07, 2009 2:48 PM > To: personal_submersibles@psubs.org > Subject: [PSUBS-MAILIST] Subdate > > Hi all, > > > > Good progress on our Kreideseesub/ Eurosub project. > > > > http://picasaweb.google.nl/submachine55/Kreideseesub# see the last pictures. > > > > This weekend we cut, fit check and step weld the main ballast tanks. > > Carsten decided to make the MBT from Alu instead of GRP for production and safety reason. > > > > Also the steering servo an spool for the emg. Buoy are in > > > > This month all metal work will be finished so the hull can be sandblasted and painted. > > > > Regards, > > > > Emile van Essen > > www.AiResearch.nl > > Hobbemalaan 54 > > 1816GE Alkmaar > > 0031-72-5122401 / 0031-6-46375374 > > > > > > > > No virus found in this in > coming message. > Checked by AVG - www.avg.com > Version: 8.5.339 / Virus Database: 270.12.58/2164 - Release Date: 06/08/09 17:59:00 > > > ************************************************************************ ************************************************************************ ************************************************************************ The personal submersibles mailing list complies with the US Federal CAN-SPAM Act of 2003. Your email address appears in our database because either you, or someone you know, requested you receive messages from our organization. If you want to be removed from this mailing list simply click on the link below or send a blank email message to: removeme-personal_submersibles@psubs.org Removal of your email address from this mailing list occurs by an automated process and should be comple te within five minutes of our server receiving your request. PSUBS.ORG PO Box 53 Weare, NH 03281 603-529-1100 ************************************************************************ ************************************************************************ ************************************************************************