Can anyone explain to me why this car needs a 260 hp motor?
I forgot the details, but if memory serves me, the engine not only charges the battery but can directly drive the electric motor. The driver can be environmentally friendly by driving nicely and going electric, only using the engine to charge the batteries when range is extended....OR, the driver can say "to hell with green" and take advantage of the batteries AND the engine simultaneously to drive the electric motor. This gives the Karma exceptional sports car like performance.
Also, while the engine is 260HP, I believe its optimal run point is at an RPM well below the 260HP point. So, while it is capable of delivering 260HP, I doubt it ever reaches that point. The car gets it sports car performance from the COMBINED battery and engine.
Edit: Here you go, from an earlier thread, https://www.skyroadster.com/forums/f2...ml#post404725:
. The LNF only runs at about 134HP.
(data extracted from C&D, March 2009):
Battery Pack (full charge): 200KW -> 268HP
LNF: 100KW -> 134 HP
Sports mode: 268 + 134 = 402HP
But it's a heavy car (4600lbs!!!), so the 400HP gets it to 60 in just under six seconds.
And if you're wondering why the LNF is only producing 134HP vice the rated 260HP....it's because it runs at around 3000 RPM for fuel efficiency and, reportedly, charge efficiency.