Any time someone asks for the "best" the only realistic answer is "it depends".
What are your selection criteria? Lowest price? Highest efficiency? Most reliable? Lightest weight? Greatest range? Some self-selected compromise between all of these criteria?
As another example, what is the "best" type of cell phone? How about the "best" make and model of car? Best airline? Best steak? Best pencil?
There is no universal answer. This dovetails into the "electric or not" discussion. Is electric better than ICE? The answer is still, it depends.
You'll find proponents and detractors in this group for every component that you mentioned. So what you're left with is what everybody here that currently owns an electric boat did, do some research and make your own decision. Unfortunately, by going the DIY route, you've got a whole bunch of individual decisions to make and some of your selections may influence your choices of other components.
I'm always surprised a the number of people that show up here, figuring that they can build a reasonably complex and expensive system from scratch that they have no previous experience with or knowledge about. This is certainly an optimistic bunch....
Fair winds,
Eric
Marina del Rey, CA
--- In electricboats@yahoogroups.com, "DRHitch" <drhitch@...> wrote:
>
> I have seen a ton of postings here for a myriad of self-built electrification systems, but is there any one "best" system for a small sailboat or inboard conversion?
>
> Motors: Mars, Torquedo or other brand?
> Transmission: gears, belts, shaft pulleys?
> Batteries: Led-acid, LiFEPO4, Lithium (other)
> Chargers: Brand, etc
> Controller, Sevcon, Curtis, other brands?
>
> Any other issues; ground separation, EMI
>
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