Re: [PSUBS-MAILIST] Motors and Speed Controllers

["Peter Madsen" <peter@submarines.dk>]

Sirs,

We have used a 4QD controller on Kraka, that worked ok in the workshop, and 
during extended full power tests at quayside. However - after one harbor 
cruise on diesel - it newer worked again and was replaced with a set relay´s 
and a resister. Very mixed fealings.

Regards,

Peter
----- Original Message ----- 
From: "Bryce Yarbrough" <byarbrough@mac.com>
To: <personal_submersibles@psubs.org>
Sent: Friday, October 05, 2007 1:40 AM
Subject: [PSUBS-MAILIST] Motors and Speed Controllers


> Just want to know what you all think on the selection of speed  controller 
> I have found:
>
> http://www.4qd.co.uk/prod/4qd.html
>
>
> And I want to know what you guys recommend for an electric motor for:
>
> A) the Main Engine (single prop, going for 8 Knots Submerged on  electric)
>
> B) Bow Thruster to aid in turning
> It will be in the submarine, with a shaft like tube running from one  side 
> to the other.
>
>
> -Bryce
>
>
>
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