[PSUBS-MAILIST] gyro compass

Mon Jun 27 23:44:49 EDT 2016

https://www.microstrain.com/inertial/nodes

Sean


On June 27, 2016 9:10:25 PM MDT, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Hank,   do you know if there are any cheap inertial navigation systems
>out there?  I would thing the robotics people might have something like
>that .
>
> 
>
>Brian
>
>--- personal_submersibles at psubs.org wrote:
>
>From: hank pronk via Personal_Submersibles
><personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion
><personal_submersibles at psubs.org>
>Subject: Re: [PSUBS-MAILIST] gyro compass
>Date: Mon, 27 Jun 2016 21:06:25 +0000 (UTC)
>
>Its Aliens, Alan,
>
>I tried it inside the sub and it tries to work but is totally off.  I
>did squeeze it with the body off to simulate depth and it worked fine
>in the shop being squeezed.  
>
>Hank
>
>
>
>On Monday, June 27, 2016 2:39 PM, Alan James via Personal_Submersibles
><personal_submersibles at psubs.org> wrote:
>
>
>
>Hank,
>
>I think your theory about the UFO is looking good at this stage.
>
>It didn't work at 10ft, that's about 5psi; So have you tried squeezing
>
>it in various places to replicate that? Or what about mounting it
>
>inside the hull on a pole in the center of the dome area, as far
>
>as possible from the hull. If it worked it would eliminate any Alien
>
>influences & indicate that the water pressure was the problem.
>
>Alan
>
>_____________________________________________
>From: hank pronk via Personal_Submersibles
><personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion
><personal_submersibles at psubs.org> 
>Sent: Monday, June 27, 2016 11:26 PM
>Subject: Re: [PSUBS-MAILIST] gyro compass
>
>
>Alan,
>
>I took my compass apart and it is perfect, it works perfect in my shop
>etc.  I put it in the lake and it is stuck on N most of the time. 
>Occasionally it will move. I think there is some mineral interference
>or an old sunken UFO messing with it.  
>
>Hank
>
>
>
>On Monday, June 27, 2016 5:11 AM, Alan James via Personal_Submersibles
><personal_submersibles at psubs.org> wrote:
>
>
>
>Hank, 
>
>why would you want a turn & bank indicator above some sought of
>compass?
>
>There are a multitude of inexpensive underwater compasses that scuba
>divers use,
>
>although they may be a bit small to be read at a distance. Possibly
>there is some
>
>issue with the compression of the oil stopping your compass from
>functioning?
>
>Mounting the compass outside the hull seems to be standard practice & I
>haven't
>
>heard of any failing. Perhaps someone with previous issues with them
>could comment.
>
>Alan
>
> 
>
>
>
>_____________________________________________
>From: hank pronk via Personal_Submersibles
><personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion
><personal_submersibles at psubs.org> 
>Sent: Monday, June 27, 2016 10:37 PM
>Subject: Re: [PSUBS-MAILIST] gyro compass
>
>
>Kieth,
>
>I stand corrected, a turn and bank indicator is just the ticket and
>tons of them on eBay for cheap.  I was focusing on compass only, but
>these indicators are much cheaper and more available.  
>
>Thanks' for the tip
>
>Hank
>
>
>
>On Sunday, June 26, 2016 6:25 PM, hank pronk via Personal_Submersibles
><personal_submersibles at psubs.org> wrote:
>
>
>
>Hi Kieth,
>
>My understanding is the aircraft units are noisy, I assume that is the
>air units.  They are hard to find in guaranteed working condition for a
>price that works for me.  If you know of any for a descent price-please
>let me know.
>
>Hank
>
>
>
>On Sunday, June 26, 2016 6:16 PM, k6fee via Personal_Submersibles
><personal_submersibles at psubs.org> wrote:
>
>
>
>Hank, 
>
>
>Try using a gyro compass ( or atifical horizon) from an aircraft. They
>sre either air, vaccum or electric  powered.
>
>
>Keith 
>
>
>
>
>Sent from my Verizon, Samsung Galaxy smartphone
>
>
>-------- Original message --------
>
>From: hank pronk via Personal_Submersibles
><personal_submersibles at psubs.org> 
>
>Date: 6/26/16 4:11 PM (GMT-08:00) 
>
>To: Personal Submersibles General Discussion
><personal_submersibles at psubs.org> 
>
>Subject: [PSUBS-MAILIST] gyro compass 
>
>
>I am going to try to make a gyro compass, looks doable.  I don't care
>about what direction I am going-I just want to go in a strait line.  I
>will point the sub in the direction I want to go at the surface, then
>turn on the gyro and sink.   Then I can just follow the gyro.
>
>Hank
>
>
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