-- Original Message --
From: Steve Haywood <[EMAIL PROTECTED]>
To: [email protected]
Send: 04-06-2007
Subject: Re: [canals-list] Blue Nunn

On 03/06/07, Captain Beeky &amp;lang=en">[EMAIL PROTECTED]>
wrote:
>
>
>
> Next weekend I plan a blast down to Patch on low compression.


If you consider that Thames tugs powered by JP3s used to pull convoys of
six, sometimes eight, loaded barges against the tide, then you
will understand what 'under load' means for this engine. I really can't
understand why you'd EVER want to put it on low compression now. You'll undo
all the good that you seem to have done.


Yes but, after just one pint this evening . . . .  I think that the engine 
under load is doing the same amount of work whether UM is tied to an inflatable 
dolphin or the Ark Royal.

All the engine does is turn the prop which bites into the water, moving it 
backwards (or forwards). What type of motion follows depends on the shape of 
the hull, mass, drag and acceleration. And possibly barnacles.

I'll pour myself another.

Beeky

 



 

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thorNET, http://www.thornet.co.uk


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