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Hi everyone,
I might have good news for those living in a snowy and icy country.
The recent Alex on Cars review turned my eyes wide open when he talked about regenerative braking. See Alex on Cars @ 24:17
It appears that what Tesla touts as "Regenerative braking" is in fact only "Lift off regeneration", when coasting.
As soon as you touch the brake pedal, you engage the real brakes. I was not aware of that.
I had a disappointing experience driving a Model 3 last winter, on a highway during a snow storm.
Every time I left my foot of the accelerator, I could feel the car moving left and right in a really scary manner.
The car was trying to regenerate, with the rear motor.
The solution was to turn off "Regeneration". All regenerative potential is lost but you gain control/safety in return.
Owners experiencing the same issue : Tesla forum - Youtube rear slip
In the Polestar 2, there is no way to turn off regeneration completely, the setting is for one-pedal driving only, aka "Lift off regen".
The car features blended braking; the brake pedal will always use true "regenerative braking" first, and engage the pistons only if you really need to brake, harder.
I was getting a bit concerned because if regeneration is not done right, I might experience the same problem as with the Model 3, and have no way to fix it.
I asked Polestar support some technical questions, not expecting much back, and got really insightful answers from Alane :
I'm not an engineer but I assume it's feasible by having identical Permanent Magnet motors in the front and the rear.
They have the same "braking" potential and can be tuned accordingly .
The Model 3 has two different motors. A powerful one in the rear, doing all the job.
And an efficient one in the front, used rarely. Watch F Torque and R Torque in Bjorn testing AWD.
For comparison, the Model 3 maximum regenerative peak power is 60kW for RWD and 77kW for AWD.
Reason behind this choice is that the induction motor is really much better for the range, it can spin freely when not in use.
My guess/hope is that in exchange of shorter range on highway, we get better city-driving efficiency (stop and go) and better traction and regen on slippery roads.
I might have good news for those living in a snowy and icy country.
The recent Alex on Cars review turned my eyes wide open when he talked about regenerative braking. See Alex on Cars @ 24:17
It appears that what Tesla touts as "Regenerative braking" is in fact only "Lift off regeneration", when coasting.
As soon as you touch the brake pedal, you engage the real brakes. I was not aware of that.
I had a disappointing experience driving a Model 3 last winter, on a highway during a snow storm.
Every time I left my foot of the accelerator, I could feel the car moving left and right in a really scary manner.
The car was trying to regenerate, with the rear motor.
The solution was to turn off "Regeneration". All regenerative potential is lost but you gain control/safety in return.
Owners experiencing the same issue : Tesla forum - Youtube rear slip
In the Polestar 2, there is no way to turn off regeneration completely, the setting is for one-pedal driving only, aka "Lift off regen".
The car features blended braking; the brake pedal will always use true "regenerative braking" first, and engage the pistons only if you really need to brake, harder.
I was getting a bit concerned because if regeneration is not done right, I might experience the same problem as with the Model 3, and have no way to fix it.
I asked Polestar support some technical questions, not expecting much back, and got really insightful answers from Alane :
Good, looks like a regular braking bias (brake more in the front than the back, to avoid rear slip).The maximum regenerative deceleration is 2.2 meters per second squared and happens typically around 70km/h.
Maximum regenerative peak power : 100kW
Brake bias : 60 (front) / 40 (rear).
Polestar 2 handles snow and ice quite well
I'm not an engineer but I assume it's feasible by having identical Permanent Magnet motors in the front and the rear.
They have the same "braking" potential and can be tuned accordingly .
The Model 3 has two different motors. A powerful one in the rear, doing all the job.
And an efficient one in the front, used rarely. Watch F Torque and R Torque in Bjorn testing AWD.
For comparison, the Model 3 maximum regenerative peak power is 60kW for RWD and 77kW for AWD.
Reason behind this choice is that the induction motor is really much better for the range, it can spin freely when not in use.
My guess/hope is that in exchange of shorter range on highway, we get better city-driving efficiency (stop and go) and better traction and regen on slippery roads.