|
An idea I've considered is buying a large exercise
ball and inflating it till it was quite firm. I'd use that as the male
mould. Take the female off that one and use it every time I'd need to
rebuild the nosecone. Like when my obstacle avoidance sonar
failed.
Needless to say it wouldn't have any surface
patterns, ribs, seams, etc. At least I'd try to get a seamless one.
Less work later on to grind off funny lines and "made in China"
labels.
One consideration is that the ball would probably
not be to scale. Could possibly use only part of the arc of the ball for
the nosecone. That way the scantlings could be faired into the
cone.
Rick L.
Vancouver
----- Original Message -----
Sent: Sunday, December 04, 2005 3:37
AM
Subject: RE: [PSUBS-MAILIST] manipulator
arms
As a matter of fact Rick, check out Brian Lula's observatory construction
pics for ideas on your spherical mockup. Not that second monster of his, but
the first one he built in his yard.
http://www.heavensgloryobservatory.com/
Ahh...too many interests, not enough life to do it all!
Joe
From: "Joseph Perkel" <joeperkel@hotmail.com>
Reply-To:
personal_submersibles@psubs.org
To:
personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST]
manipulator arms
Date: Sun, 04 Dec 2005 02:49:49 +0000
Rick,
"Want to start the hull mockup but have not
yet figured out how the make a hemisphere form plywood yet."
There are good hints about this within the
homebuilt astronomical observatory community.
Joe
From: "rick miller" <rickm@pegasuscontrols.com>
Reply-To:
personal_submersibles@psubs.org
To:
<personal_submersibles@psubs.org>
Subject:
[PSUBS-MAILIST] manipulator arms
Date: Sat, 3 Dec 2005
17:32:49 -0800
hi guys
I solved the rotation
problem and found a pump to use for the hydraulics. parker has a piston
pump that will withstand 500 psi on the inlet and is available in 48 volt
dc so i can use a pressure comp resivor and flood the solinoids in
it. And using parker te series hyd motor for the rotation of the
claw i shoud be able to get about 2 - 10 rpm using a pwm for the motor
controller. i called alllen bradley about using one thier remote i/o
packages in the resivor, they had some missgivings about it, but i
figure if i epoxy encapsulate it it should live . That will save a lot on
hull pentrations because i will only have a power feed/ 2wire and a
data feed/2 wire. Still working on a budget price of about
2000.00$ for the parts for both. will start building the mockup soon.
Want to start the hull mockup but have not
yet figured out how the make a hemisphere form plywood yet. The basic plan
still calls for no mechanical hull pentrations. I also found a great
manufacture for brass and stainless hyd rams. the base pivots and wrist
pivot use off the shelf food grade pillow block bearings, stainlesss and
composite, wanting on the manufacturer to get back to me with the
mount strenghts.
rick
m
************************************************************************
************************************************************************
************************************************************************ 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 complete within five minutes of our server receiving
your request. PSUBS.ORG PO Box 311 Weare, NH 03281 603-529-1100
************************************************************************
************************************************************************
************************************************************************
************************************************************************
************************************************************************
************************************************************************ 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 complete within five minutes of our server receiving
your request. PSUBS.ORG PO Box 311 Weare, NH 03281 603-529-1100
************************************************************************
************************************************************************
************************************************************************
|