With these dimensions to calculate the drag coefficient and loads of help from "anonymous" in Melbourne add the following tests results;
0-60km/h 11.05 seconds (using all the gears)
0-60km/h 9.5 seconds (using 2nd & 3rd and heavy acceleration)
840Kg (with driver but otherwise no fuel & empty)
0.4 Cd, drag coefficient (1.608Sq.M frontal area)
18.5 seconds free wheeling from 70 to 50 km/h (level surface & measured in 180Deg opposing directions)
and we calculated to accelerate the car from 0 to 60km/h it will use 1400Watts continuously for a duration of 11 seconds and so by my rough workings thats about 3.4Amps for 11 seconds out of my 13Amp/Hour battery.
1 comment:
Hi,
500kg mass at 16m/s (57.6kph) has 64,000 Joules of kinetic energy. (E= 1/2mv^2)
to accelerate it to that speed in 11 seconds will take about 6,000 Watts average (A watt is a joule/ second)
add in some drag, inefficiencies in motor and controller, etc. your batteries will be delivering a lot more than that...
Cheers,
Woody
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