|
The
pack has had 2 hours of charging.
It
has recovered about 19.332 kW-hrs of the 23.293 kW-hrs we used last
session.
|
| Battery
voltage is 364 volts and battery temperatures are 40 C. |
| |
|
I pull
onto the track behind a number of cars. There is a little tire warming
but we all get up to speed fairly quickly.
|
| |
| I
spend the first timed lap getting a little bit of a draft at about
4-6 car lengths behind. |
|
I turn
a 1:26.4.
|
|
|
|
The
next lap is even better.
|
|
I still
have the same small draft. I go deep into the carousel and the car
drifts towards the outside of the track. This straightens the exit
and lets me apply the power earlier.
|
| I
turn a 1:23.9. |
| |
|
Then
the front tires begin to give up a little grip.
|
|
I get
entry transient phase understeer in turn 4 and have to wait later
to apply the power in the carousel due to mid phase understeer.
|
| The
cars I am attempting to draft pull away. |
| This
time; a 1:24.3. |
| |
|
I get
into traffic and my laps drop to the 1:25's.
After
a total of 7 hot laps the session ends.
|
| |
|
The
pack voltage is 335 Volts but the battery temperatures have moved
to almost 57 degrees.
At
450 amps, we are using around 1000 Watts per mile including about
7% energy recovered from regenerative braking.
|
| |
| hot
lap video (~28.23MB .wmv file) |
| |
| It
has been a very successful test day. The car has done about 28 laps
without any problems. |
| |
|
The car has gone faster each session. |
| |
| Recharging
has been smooth. There has been gradual heat build up in the battery
pack from the constant discharge/recharge cycles but it has not keep
us from making each session. |
| |
| Race
days will only require making two sessions a day. |
| |
| We
are ready for the weekend. |
| |
|
 |
