I don't know about Unobtainium, but I think it will probably require some kind of breakthrough, not just incremental improvements.
Every vehicle has its own version of the rocket equation (you need enough fuel to carry the fuel, which means a bigger, heavier vehicle, which means yet more fuel and the fuel needed to carry that fuel, which means a bigger vehicle...). Boats are particularly challenging because they have hull weight issues that follow a similar pattern as the rocket equation. It's why I can't just electrify the speedboat I built: the battery weight basically uses all my payload and still isn't enough to get me a useful range or running time. Building a boat that has reserve payload with that battery pack will take me from a planing hull to a displacement hull (or a planing hull that can't actually plane because there isn't enough power!) I have nothing but half-educated guesses, but I bet we have economically viable short range electric aircraft before we have viable recreational boats of this type. A wild-ass guess is that the right shoreline charging facilities will get you about a 50% duty cycle as long as you are willing to push the battery that hard. On September 15, 2024 7:57:17 p.m. CST, Mark Hanson via EV <ev@lists.evdl.org> wrote: >Hi Folks >Has anyone experienced an electric speed boat that can pull skiers for several >hours before recharging? Or is it made of Unobtanium. When I electrified my >www.evalbum.com/2749 E Cat max speed was 7mph on a displacement hull for 30 >miles with 48V 10Kwh LiFePo4 Caleb batteries about 10 years ago. Back to gas >lean burn Honda BFP60 planing hull for H20 skiing. >Best regards Mark >https://www.electrifiedmarina.com/2024-eboat-expo > >Sent from my iPhone >_______________________________________________ >Address messages to ev@lists.evdl.org >No other addresses in TO and CC fields >HELP: http://www.evdl.org/help/ > -- Ron -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20240916/dc84711e/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
