Thread: Team Trev
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Old 01-10-2013, 03:07 PM   #8 (permalink)
NeilBlanchard
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I got a great response to some questions I asked - they are quite helpful folks and acknowledge their challenges. They mention that they need to reconfigure the battery by moving it forward, so the Trev can stay stable at speed with two people aboard.

Contact | Team Trev

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in response to neilblanchard:

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What capacity is the battery pack, and what cells does it use? Is it located in the front in the floor, and how far back does it extend? Were there any stability issues with two people and/or luggage; and have you ever run a double lane accident avoidance test? Here in the States this has [...]
Trev’s original battery was 36 40 Ah lithium ion polymer cells, with a total energy of 5.5 kWh and a range of about 100 km. For Zero Race, we used 35 100 Ah lithium ion polymer cells, with a total energy of 13 kWh battery and a range of over 200 km.

The original battery was in the front compartment. The larger battery is in a tray beneath the floor, and extends from the nose of the car to about the front of the rear seat.

We have passed a lane change test at about 90 km/h, though that was with only one person in the car. Directional instability is noticeable at high speeds with a passenger; this could be improved by moving the rearmost cells back into the front compartment.

We drove from Darwin to Adelaide with one occupant (400 kg total mass) at about 80-90 km/h. The energy required to recharge Trev on this trip was 62 Wh/km.

We have a 12 V hair dryer pointing at the windscreen as a defroster. It is usually adequate with one person in the car, but does not clear the sides of the canopy (we have a cloth). We have an air intake on the front of the car, which we have to close when it is cold or wet; this needs to be improved. We are going to add small fans to blow air onto the driver and passenger for days when it is over 35 Celcius.
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