Hi Jay,
2 degrees would be good enough for me.
I remember doing my piloting training with Mark Ragan and driving right back into a cloud of silt I had kicked off the bottom. I was only ten feet or so deep but it went totally black. It was very murky without the silt. My point is that I had no, NON, clue of direction.
Regards,
Ray
--- On Tue, 7/1/08, Jay K. Jeffries <bottomgun@mindspring.com> wrote:
From: Jay K. Jeffries <bottomgun@mindspring.com>
Subject: RE: [PSUBS-MAILIST] compass location
To: personal_submersibles@psubs.org
Date: Tuesday, July 1, 2008, 3:02 PM
Ray,
Depending on how it is mounted and the variety of unit
purchased, 2 deg. resolution is typical…higher resolution can be
obtained. In a Jeep, 2 deg. Resolution is not needed and can be
distracting while driving. A compass will not tell you that you are
drifting off course, only the direction you are pointed. Accelerometers
and gyroscopes are necessary to track drift.
R/Jay
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Ray Keefer
Sent: Tuesday, July 01, 2008 5:40 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] compass location
|
Hi Jay,
What is the resoluion like? I have a digital compass in my Jeep and its
good down to eight 45 degree segments: N, NE, E, SE, S, SW, W NW. For a sub I
would like to see something better then 10 degrees. Else by the time you know
you are drifting off course you are way off course.
Regards,
Ray
--- On Sun, 6/29/08, Jay K. Jeffries <bottomgun@mindspring.com>
wrote:
From: Jay K. Jeffries
<bottomgun@mindspring.com>
Subject: Re: [PSUBS-MAILIST] compass location
To: personal_submersibles@psubs.org
Date: Sunday, June 29, 2008, 1:37 PM
Another option that is very economical and adopts easily to different
magnetic fileds if you dive in different areas is a magnaflux compass.
Mount outside the hull with a digital readout inside. No moving parts
and very reliable.
R/Jay
-----Original Message-----
From: "Dan H."
Sent: Jun 29, 2008 3:46 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] compass location
The
magnetic compass wouldn't work inside the steel sub. I originally had
it closer to the viewport but it still didn't work there. It works
somewhat out on the fiberglass MBT but even out there it's not really
reliable. That's why I installed a gyro compass.
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