Can you guys confirm I'm reading the performance charts on the bigger motors properly?
I am interpreting them to indicate that, even if I run them at as high a motor rpm as possible (ie, with reduction that allows that), at low power/current levels the efficiency will be very low.
Here's the chart for a Mars ME0708:
http://www.cloudelectric.com/v/vspfiles/assets/images/me0708data.pdf
The plot for efficiency starts at 10% and doesn't approach 90% until halfway across the chart.
And I'm assuming the X-axis on the chart is amps (why don't they label it)?
I knew I should have become an electrical engineer rather than a software geek :)...
--- In electricboats@yahoogroups.com, "Eric" <ewdysar@...> wrote:
>
> John,
>
> Good info. However, Neil want's to be able to run at 8.5kts with the same motor, batteries and prop as well as long distance. Like you, I can give advice on how to achieve either one of those goals, but not both with the same system.
>
> Fair winds,
> Eric
> Marina del Rey, CA
>
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