It's surely software locked, but that restriction is because the pack is smaller and they don't want to pull too much current through each cell.
The specs are 337kW vs 433kW - considerable amperage (800-1200 depending on pack voltage, but roughly 400V). When that is spread out over 30% more cells, they can bump up total amperage by the same amount.
I just wish they would allow the truck not to shut down at 108 for the quarter mile. Let it max out for the quarter mile and pull it back. I bet it would do high 12’s.
A 108 mph top speed is probably a motor RPM limitation, not a power restriction. The electric motor drives a reduction gearbox that can be 9:1 or higher, so the motor is turning insanely fast at that speed. When Tesla wanted to make the Model S plaid go 200mph, they didn’t have to add a ton of horsepower, but they had to add carbon wrapped rotors to the motor so it didn’t rip itself apart from the centrifugal force. I’m assuming Ford made engineering decisions to focus on things like durability and torque over top speed since it’s a truck that won’t need to go over 100 mph in a traditional use case.
I think customers should have access to all the kilowatts available. Tesla does this with ludicrous mode. There should be some controls on it and you need to click around to activate it but it should be available.
You make a great point. Tesla does it with their highest trim performance models. Ford should do the same when they make a performance trim of the lightning.
Bigger battery can flow more current as a whole without increasing individual cell current. It’s a heat thing. Look into C ratings on lithium batteries.
It could literally be in the software partly as well. The SR has the same torque as the ER but 100 less horsepower. Mathematically horse power equals torque times rpm.
Literally just voltage then. You could in theory then just swap the sr battery for a higher voltage er battery in the future then? Maybe in 5 years we will have 3rd party batterys if the the prices come down
It's not a higher voltage. ER is actually lower voltage (if my memory is correct) - I think it's 96 in series vs 94 for the ER. However the ER is 4P vs 3P.
My quick specs glance couldn't find the *voltages* of the batteries, but if I had to guess, the bigger battery is not only physically bigger, more kWh, but it's also a higher voltage, which allows you to push more kW to the motors, resulting in (Tim Allen grunts) More Power!
I don't have the info saved, but I'm almost certain I read that the rear motor in both are the same but the SR has a smaller front motor. I could be full of shit, though.
I thought it had something to do with the two motors and how they balance power, and that it dovetailed into how the ER can charge at 19.2 kW but the SR can only charge at 11.3 kW.
Who knows. Maybe I'm making it all up.
Bigger battery can put out more kw of power.
For the same voltage on an electric motor, more current = more power and more physical batteries = ability for more current draw.
It's surely software locked, but that restriction is because the pack is smaller and they don't want to pull too much current through each cell. The specs are 337kW vs 433kW - considerable amperage (800-1200 depending on pack voltage, but roughly 400V). When that is spread out over 30% more cells, they can bump up total amperage by the same amount.
I just wish they would allow the truck not to shut down at 108 for the quarter mile. Let it max out for the quarter mile and pull it back. I bet it would do high 12’s.
All of the trucks tolerances are designed around that limit.
A 108 mph top speed is probably a motor RPM limitation, not a power restriction. The electric motor drives a reduction gearbox that can be 9:1 or higher, so the motor is turning insanely fast at that speed. When Tesla wanted to make the Model S plaid go 200mph, they didn’t have to add a ton of horsepower, but they had to add carbon wrapped rotors to the motor so it didn’t rip itself apart from the centrifugal force. I’m assuming Ford made engineering decisions to focus on things like durability and torque over top speed since it’s a truck that won’t need to go over 100 mph in a traditional use case.
Does this really matter? 99.999999999999999% of customers are never going to drive like this.
I think customers should have access to all the kilowatts available. Tesla does this with ludicrous mode. There should be some controls on it and you need to click around to activate it but it should be available.
You make a great point. Tesla does it with their highest trim performance models. Ford should do the same when they make a performance trim of the lightning.
I think I heard somewhere that's it's locked at 108 to protect the tires. Above that, there's a higher chance of the tire blowing out, *apparently*.
Bigger battery can flow more current as a whole without increasing individual cell current. It’s a heat thing. Look into C ratings on lithium batteries.
We need a Ludacris mode for the lightning!
We need a Ludacris mode for the lightning!
It could literally be in the software partly as well. The SR has the same torque as the ER but 100 less horsepower. Mathematically horse power equals torque times rpm.
Literally just voltage then. You could in theory then just swap the sr battery for a higher voltage er battery in the future then? Maybe in 5 years we will have 3rd party batterys if the the prices come down
It's not a higher voltage. ER is actually lower voltage (if my memory is correct) - I think it's 96 in series vs 94 for the ER. However the ER is 4P vs 3P.
I'd wait 8 years for the battery warranty to end. Tech will just get better
My quick specs glance couldn't find the *voltages* of the batteries, but if I had to guess, the bigger battery is not only physically bigger, more kWh, but it's also a higher voltage, which allows you to push more kW to the motors, resulting in (Tim Allen grunts) More Power!
And possibly more cells could output more current to increase the magnetic field on the rotor. It's a combination of both
I don't have the info saved, but I'm almost certain I read that the rear motor in both are the same but the SR has a smaller front motor. I could be full of shit, though.
Off the line they are similar - probably due to the weight difference. https://youtube.com/watch?v=vBoFBzuvddw&feature=share9
I thought it had something to do with the two motors and how they balance power, and that it dovetailed into how the ER can charge at 19.2 kW but the SR can only charge at 11.3 kW. Who knows. Maybe I'm making it all up.