[PSUBS-MAILIST] gyro compass

[emile via Personal_Submersibles]

Hank, Alan

 

A turn indicator can be useful; on a flat seafloor you can make a 90 deg turn without noticing.  The fluxgate compass seems to slow to prevent this. The gyro compass is quicker but get inaccurate with time.

 

 

Regards, Emile

 

Van: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] Namens Alan James via Personal_Submersibles
Verzonden: maandag 27 juni 2016 13:11
Aan: Personal Submersibles General Discussion
Onderwerp: Re: [PSUBS-MAILIST] gyro compass

 

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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