Feel free to correct me since I'm not that familiar with Tesla, regenerative braking is more like engine braking rather than "pedal" braking. As in, while you coast, there's negative torque against driving axle which charges battery.
It's rather useless in racing situation. You want 4-wheel braking then, this may throw off your balance. I believe regenerative braking is not very effective when compared to full-blown racing brakes as well. It's great when you're stopping at traffic light from far away, but not when you brake hard.
On top of that, this is not limited to electric cars. Some regular cars have it too. For example non-e Golfs got it.
Do you want linear braking torque though? Progressive (more speed-more torque) braking may help to brake to exact spot and avoid lockup.
As you brake, car dives in, taking force off rear wheels. With linear braking, it may be too easy to lock them up. Which is especially dangerous if you're still braking when entering the corner.
"Torque increases linearly with speed" means "more speed more torque".
The "linear braking torque" you are talking about seems to be a completely unrelated concept referring to how the brakes react to inputs from the pedal. A braking system can have both of those, none, or any single one.
Formula cars use regenerative breaking that isn’t an issue.
The problem with the Tesla is that the suspension, steering, breaks etc. aren’t exactly sport class and that it weighs more than a Ford F-150 pickup.....
Good point. I was thinking regular street class regenerative braking might be an issue in sports. It'd be interesting to see if F1 is doing anything to compensate harder braking on rear axle.
After all, front brakes do need more power. Otherwise rear wheels are easy to lock out. ABS would kick in reducing regenerative braking. I guess they'd need much stronger front brakes and have regenerative braking kick in progressively with how the brake pedal is applied?
Of course, they could do 4-wheel regenerative braking even with one driving axle.. But that'd be another can of worms.
I'd love to read full paper [0]. Looks like they're looking into this exact problem.
The street class is the problem for the Tesla and not just for the regenerative breaks but even the normal ones.
I would say that racing in a Tesla is like racing in a Ford F-150 hauling a working jet engine in the back with the breaks and suspension of a Ford Mondeo.
It's rather useless in racing situation. You want 4-wheel braking then, this may throw off your balance. I believe regenerative braking is not very effective when compared to full-blown racing brakes as well. It's great when you're stopping at traffic light from far away, but not when you brake hard.
On top of that, this is not limited to electric cars. Some regular cars have it too. For example non-e Golfs got it.