[he takes a bow . . . :-)
----- Original Message -----
Sent: Friday, December 02, 2005 6:31
AM
Subject: Re: [PSUBS-MAILIST] Dive Plane
Mechanical Linkages
Thanks Rick, just the kind of stuff I am looking for...straight into the
data folder.
Joe
From: "Rick and Marcia" <empiricus@telus.net> Reply-To:
personal_submersibles@psubs.org To:
<personal_submersibles@psubs.org> Subject:
Re: [PSUBS-MAILIST] Dive Plane Mechanical Linkages Date: Thu, 1
Dec 2005 20:49:24 -0800
I guess what I'm really asking is about
installation and maintenance practicality. Which system would create less
and smaller holes in the crew compartment and be easier to deal
with?
Hi, Joe - I'm opting for SS marine cable around pulleys. Cheaper
than Teleflex!!!
As far as bulkhead penetrations, I'll be using
small bellows zap-strapped onto my cables. Similar to
what motorcycle choke cables have. Not sure if the m/cycle cable
bellows will withstand the marine environment but they're cheap enough to
replace on a regular basis.
I'll also be keeping all cockpit/bulkhead
penetrations low (when appropriate) for obvious reasons. My
compensating regs will be as low as I can get them to maintain a slight
overpressure in the cabin. Leaks will turn up as bubbles escaping
rather than water sprays all over my head.
Rick
Vancouver
----- Original Message -----
Sent: Thursday, December 01, 2005
11:15 AM
Subject: Re: [PSUBS-MAILIST] Dive
Plane Mechanical Linkages
Brian,
If I recall, you are the one building something similar to Deep Flight.
In that case, the differential control surfaces you describe are just the
ticket if you are going to "fly" underwater and want that kind of
maneuverability. You have your rudders controlling motion about the
longitudinal axis of the boat where an aircraft uses them for the vertical
axis. Im going for lateral axis control only from the dive planes.
In my case, I won't need to bank at all, small course corrections with
a conventional rudder because of my speed and underwater profile should be
quite sufficient. I am after the same control profile as those old fleet
type subs.
I guess what I'm really asking is about installation and
maintenance practicality. Which system would create less and smaller holes
in the crew compartment and be easier to deal with?
Thanks
Joe
From: "Brian Cox"
<ojaivalleybeefarm@dslextreme.com> Reply-To:
personal_submersibles@psubs.org To:
<personal_submersibles@psubs.org> Subject: Re:
[PSUBS-MAILIST] Dive Plane Mechanical Linkages Date: Thu, 1
Dec 2005 09:52:36 -0800
Joe,
I'm using the same type of system on my sub, I have a sitck and
rudder arrangement like on an airplane. I have foot pedals that
contol opposing side " ailerons" which turn in the opposite directions
for banked turns. The stick controls the rear rudder, which is a
side to side motion on the stick, and for accending or decending the
stick is pushed forward ( for down) and back ( for up ).
This is what I have been working on for the last few weeks on my to
scale mock up. Everything is pretty straight forward linkage,
however the side to side motion on the stick, for rudder control are
miter gears so I can change that motion perpendicularly. An on one
of the foot pedals I needed to use two meshing gears to reverse the
motion with a counter shaft, so I could get a better angle (leverage) on
the pedal. All these motions are turning thru hull shafts in a
rotating manner.
Regards
Brian
----- Original Message -----
Sent: Thursday, December 01, 2005
08:43
Subject: [PSUBS-MAILIST] Dive
Plane Mechanical Linkages
Since my boat as designed is primarily a snorkel boat
on the tiny diesel, dynamic flow over dive planes is critical to
control.
I have in mind a mechanical linkage system similar to
aircraft control surfaces with either a bell crank and pulley system
or better yet a pushrod and torque tube system.
Individual control of the bow and stern planes as in
the WWII boats is not really practical, so I am planning on an
interconnection via either a single lever or a side mounted wheel.
Very simple stuff, no hydraulics or electric motors.
I welcome comments and suggestions as every time I put
something out, my design is improved tremendously as a result of the
input.
Thanks
Joe
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