New levels of stupidity.

Wot ??? Compared to an AC induction motor ?? Hardly. The things are dead easy to drive.

Steve

On or around Thu, 29 May 2008 15:04:56 +0100, steve Taylor enlightened us thusly:

efficiently?

Yes, very efficiently - big 'koff MosFets

Steve

On or around Fri, 30 May 2008 01:17:06 +0100, Steve Taylor enlightened us thusly:

ah, OK then. I still reckon hydraulics would be better - more waterproof. In fact, if you designed a hydraulic system using water as a working fluid it's not matter if it was waterprrof or not :-)

Of course it would, after all the working liquid isn't what makes it work, it's the pressure, so if it can let water in or out then it's not pressure-tight so ain't gonna be good!

Is this going to turn into one of those pedantic bun-throwing contests ;-)

There's a huge spreadsheet somewhere giving results of various combinations (designed for boats, but the principals are the same). Hydraulics came out slightly better than the available electric drives IIRC. As an aside, I'm currently planning an electric narrowboat.

Ah, you want an Aquadrive! ;-)

Is that the MHD drive ?

Steve

/pulls up a comfey chair

On or around Fri, 30 May 2008 15:58:59 +0100, steve Taylor enlightened us thusly:

Is that what they had on Red October?

Yes, thats the stuff.

Steve

I've got one of them in the shed, just not got around to working out how to mate it to the speedo yet.

;-)

Lee D

It'll have to have compressed air lockers, otherwise you won't be able to surface!

Regards,

Simonm.