Boatfreaks - Princeton Electric Speedboating Team Eyeing APBA Kilo Run Record In Big Bird

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Princeton Electric Speedboating Team Eyeing APBA Kilo Run Record In Big Bird

The electric speed record race continues later this month with the student-led Princeton Electric Speedboating's APBA-sanctioned kilo run in North Carolina.

https://www.speedonthewater.com/prin...rd-in-big-bird

Interesting project, but it illustrates the problem for heavy duty electric vehicles. 24 kwh battery weighs as much as 75 gals of gas (~350 kg), but gives the 200 hp motor a 10 minute run time. And that assumes discharging to zero (horrible for battery packs)with zero losses in the A/C conversion.

75 gal of gas runs a WOT 200hp engine a long time

The math, again all at 100% efficiency
200 hp = 149 kw
24 kwh / 149 kw = 0.16 hours, or 9.66 minutes

Basically, one, maybe two speed runs per charge