Well worded James. At least you understand why I went direct drive. The compromises of physics. I have to say at low power the serial efficiency equation; once one actually runs the numbers from known efficiencys based on measurement begin to show the differential in actual Ah consumed and you can quantify the costs involved. I have to say in my case 2 X 12.8 V nominal batteries or 12V as they were in the beginning means less overall system weight and cost, one of my project goals. Having said that once folk start to hit around 1kW continuous cruise, it is time in my view to go geared.
And whilst on that subject and even though I'm a DIY'er and not an Electroprop customer you can save yourself a lot of grief and money by buying James'es book.
http://electroprop.com/the-electric-boat-book/
It's the distillation of a lot of hard earned knowledge. Whilst that info was free in the earlier days, it is now a negligible cost for great information and by reading it you'll save James and Mike and other professional vendors a lot of their valuable commercial time. Many thanks though for such people taking their valuable time to help us folk on this list.
Long live EP evangelists!
John R.
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