Thursday, December 30, 2010

Re: [Electric Boats] Re: Electric Kicker

 

Good point Matthew.  I guess I'm just wishful thinking that they care about propulsion.

On Thu, Dec 30, 2010 at 3:52 PM, Matthew Geier <matthew@acfr.usyd.edu.au> wrote:
 

On 31/12/10 03:48, acsarfkram wrote:
> I think tolling motor props are optimized for trolling - low speed high thrust.

And also being abused - i.e. running into sea grass beds, other debris
in the water, contact with the sea bed - hitting sand and rocks while
running, etc.

I suspect no 1 on their list is being 'snag-less' to cope with the
'weeds' and then robustness against ground impacts. Actual propulsion
efficiency is probably way down their list.

Interestingly I note that in my boat, I know I've gotten too close the
the sea-grass when my motor current suddenly spikes.


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