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[PSUBS-MAILIST] RE: COG v's COB
- To: <personal_submersibles@psubs.org>
- Subject: [PSUBS-MAILIST] RE: COG v's COB
- From: "Hugh Fulton" <hc.fulton@gmail.com>
- Date: Sat, 8 May 2010 10:54:11 +1200
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- In-reply-to: <1OAU4b-0VSRto0@fwd07.aul.t-online.de>
- References: <1OAU4b-0VSRto0@fwd07.aul.t-online.de>
- Reply-to: personal_submersibles@psubs.org
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Hi Carsten,
You raised a good point. Centre of Gravity. What is your distance between
center of gravity and center of buoyancy both on surface and submerged? It
was nice to see the Comsub on your website of Euronaut.org and I would like
to know what the PA210009 relates to. Regards, Hugh
-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of
MerlinSub@t-online.de
Sent: Saturday, 8 May 2010 8:20 a.m.
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] stainless vs aluminum
The main ballast tanks of Eurosub are made from aluminium.
The main reason was the center of graphity of the boat in height direction.
For the reason that I also can not weld alumium we give the welding away to
a yard.
In general I work better with stainless but be carefull - stainless in
combination
with other metals like brass/bronze etc can give way very quick in
saltwater.
Stainless to weld is relative easy but weld schrinking and bending of the
metall is an issue.
vbr Carsten
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