Video production: TWA Productions
A day at Bruntingthorpe
Two weeks ago now we took the Nemesis to Bruntingthorpe, for it’s first real track day.
We had two purposes, to test safety followed by speed.
The safety aspect was about the stability of the car in the event that one of the motors or belts suddenly quit – having separate rear drives means we have the potential for some considerable torque steer in the wrong circumstances.
So our test pilot took the car down the track at increasing speeds, while the co pilot threw a switch – to disable one motor. The car has a system that responds to the loss of drive on one wheel, we needed to know if it was responding fast enough.
The results were good. In a straight line the impact of losing one motor, even at speeds well in excess of 100mph, was very slight (on the steering).
Later in the day we went on to try the same thing driving hard round bends, and eventually we found the limit and spun the car – but the circumstances it took to pull this off were a long way from real road conditions.
Before that though (while we still had plenty of battery) we did some speed tests……. 🙂
Results as follows –
|Standing Quarter||12.71 seconds
(terminal speed 113.7 mph)
|Top speed||134.5 mph|
Not bad for our first real test. We reckon the motors are spinning about 10% less fast than they could and we think there’s some torque limit applied by software – because we just can’t spin the wheels…..
We’re looking at both of these and confident there’s quite a bit more in the car yet. Top end and 0 to 100.
While we do that, the car is finally off to the paint shop, we’re packaging a fast charger to fit in the boot (for some distance work) and getting ready to launch on the road in October.
So this is the penultimate episode, our next one should take us right up to the launch.
Finally we’re almost there. It’s a good place to be.
PS – In what must be a sign of the times – there were more EVs and Hybrids on test the day we were at Bruntingthorpe than there were conventional ones. Roll on the day.