Range extender - please adjust spec to 250 miles of EV Range

[Variable430]

The range extender should get at least 50% of its 500 mile range in pure EV mode otherwise it would be pretty worthless with only 150 miles that you can only get in ideal conditions. In the winter this likely means sub 100 miles pure EV range - not acceptable

 

[J Alynn]

All well and good, but the public EV infrastucture in New Mexico is pitful at present and the push for more multifamily stuctures currently doesn't support the ability to charge at home.
That will have to be mandated at huge expense for property owners.

Sadly you are correct. Having worked for multi-family developers they tend to be too cheap to install even a pair of chargers in an apartment complex which is a shame

 

[cyure]

Sadly you are correct. Having worked for multi-family developers they tend to be too cheap to install even a pair of chargers in an apartment complex which is a shame

You would think it would be an amenity they could advertise on to draw more tenants, but maybe that’s not a thing anymore. I haven't rented since 1989.

 

[J Alynn]

You would think it would be an amenity they could advertise on to draw more tenants, but maybe that’s not a thing anymore. I haven't rented since 1989.

Exactly the argument I used to make. Added goofy features that gave really no value to a renter but chargers were deemed unnecessary

 

[OH1984]

You would think it would be an amenity they could advertise on to draw more tenants, but maybe that’s not a thing anymore. I haven't rented since 1989.

Yes I agree, and actually having seen people from all walks of life at EV chargers, I think it’s a great selling point for multiple price markets to offer EV charging. Now since people live there and you don’t want them to camp at them, some sort of login required as a renter sort of like a key or code to the pool, with a cost for camping after charge is complete to make it fair to the other tenants would be necessary.

 

[MasterSpam]

Also don't forget that the battery is the single heaviest component with maybe the entiire body the exception.
It also takes up a large area and would need to be 40%(?) larger to enable 40% more capacity/range..
This will restrict the size/volume of the extender gas tank and possible the placement of the battery
The EV loses all the weight of the gas and ice PU which is made up by a much larger battery.

 

[SpaceEVDriver]

Also don't forget that the battery is the single heaviest component with maybe the entiire body the exception.
It also takes up a large area and would need to be 40%(?) larger to enable 40% more capacity/range..
This will restrict the size/volume of the extender gas tank and possible the placement of the battery
The EV loses all the weight of the gas and ice PU which is made up by a much larger battery.

Agreed.

The Lightning extended range battery has 143 kWh total capacity and weighs about 1800 pounds, or about 12.6 pounds/kWh (175 Wh/kg), including the battery structure and thermal management. If the BEV Scout has a similar capacity battery, which I think is likely, it’ll be a similar weight, volume, and shape.

The 4-cylinder Harvester engine will be about 400 pounds by itself. The electric motor attached to it will likely weigh 250 lbs or so. The gas tank and various fuel lines, gauges, filters, etc will weigh about 50 pounds empty. Add 120 pounds of gas for a 20-gallon tank. Add in the engine cooling and motor cooling.

All told, Scout will have to drop ~ 850-900 pounds from the battery to accommodate the Harvester assembly. That’s a loss of a minimum of 45% to 50% of the battery to accommodate the weight of the Harvester. Reserving a certain amount of battery capacity for various reasons---including reduced efficiency with the added complexity of the Harvester---leads to a back-of-the-envelope approximate agreement with the 350 miles BEV reduction to 150 miles E-only with the Harvester, just based on mass. That’s assuming they’ll try to keep the approximately same curb weight between the two vehicles.

 

[MasterSpam]

Agreed.

The Lightning extended range battery has 143 kWh total capacity and weighs about 1800 pounds, or about 12.6 pounds/kWh (175 Wh/kg), including the battery structure and thermal management. If the BEV Scout has a similar capacity battery, which I think is likely, it’ll be a similar weight, volume, and shape.

The 4-cylinder Harvester engine will be about 400 pounds by itself. The electric motor attached to it will likely weigh 250 lbs or so. The gas tank and various fuel lines, gauges, filters, etc will weigh about 50 pounds empty. Add 120 pounds of gas for a 20-gallon tank. Add in the engine cooling and motor cooling.

All told, Scout will have to drop ~ 850-900 pounds from the battery to accommodate the Harvester assembly. That’s a loss of a minimum of 45% to 50% of the battery to accommodate the weight of the Harvester. Reserving a certain amount of battery capacity for various reasons---including reduced efficiency with the added complexity of the Harvester---leads to a back-of-the-envelope approximate agreement with the 350 miles BEV reduction to 150 miles E-only with the Harvester, just based on mass. That’s assuming they’ll try to keep the approximately same curb weight between the two vehicles.

The electric motor is necessary for both vehicles, so won't that be a wash?
You're estimating 17 mph running in 'hybrid' mode I'm presuming with 150 miles of EV added to make the 500mph figure?

 

[bsddrake]

The electric motor is necessary for both vehicles, so won't that be a wash?
You're estimating 17 mph running in 'hybrid' mode I'm presuming with 150 miles of EV added to make the 500mph figure?

I calculated 23.33 MPG based on whatever numbers I could find.

 

[SpaceEVDriver]

The electric motor is necessary for both vehicles, so won't that be a wash?

No.

The BEV will have two electric drive motors: one at the front and one at the rear.

The Harvester will have three electric motors: the two drive motors and the generator motor.
The gasoline engine will turn an electric motor to generate the electricity required to charge the battery/power the drive motors. This will not be one of the two drive motors.

You're estimating 17 mph running in 'hybrid' mode I'm presuming with 150 miles of EV added to make the 500mph figure?

I only estimated the relative masses of the two systems, guessing at a tank size. If the efficiency of the gasoline engine is better, the size of the tank can be smaller, so some weight savings could be had there. If you assume the tank is only 10 gallons, then that saves about 60-70 pounds. It’s all back-of-the-envelope and guesses based on other systems. Scout hasn’t told us enough to know, but we can guess.

 

[bsddrake]

No.

The BEV will have two electric drive motors: one at the front and one at the rear.

The Harvester will have three electric motors: the two drive motors and the generator motor.
The gasoline engine will turn an electric motor to generate the electricity required to charge the battery/power the drive motors. This will not be one of the two drive motors.


I only estimated the relative masses of the two systems, guessing at a tank size. If the efficiency of the gasoline engine is better, the size of the tank can be smaller, so some weight savings could be had there. If you assume the tank is only 10 gallons, then that saves about 60-70 pounds. It’s all back-of-the-envelope and guesses based on other systems. Scout hasn’t told us enough to know, but we can guess.

I think I saw somewhere 15gal for the fuel tank which puts this closer to 23.33... MPG. I'm still waiting for the official number like everyone else though.

 

[SpaceEVDriver]

I think I saw somewhere 15gal for the fuel tank which puts this closer to 23.33... MPG. I'm still waiting for the official number like everyone else though.

Yeah. It makes sense for it to be between 10-30 gallons.
I haven’t seen anything official...so gotta stick to guessing.

 

[AlanL]

Yeah. It makes sense for it to be between 10-30 gallons.
I haven’t seen anything official...so gotta stick to guessing.

Yes, nothing official as in final specs, but I've seen 15 gallon somewhere from an SM person. Can't recall where right now.

 

[J Alynn]

Yes, nothing official as in final specs, but I've seen 15 gallon somewhere from an SM person. Can't recall where right now.

15-16 sticks in my mind too but don’t recall from where

 

[SpaceEVDriver]

I did a quick search and it shows up in several spaces, so 15 gallons seems to have become the common expectation.

If so, it decreases the estimates above a bit, but not enough to drastically change the basic fact that in order to fit the Harvester in, the battery will have to be reduced in mass and volume by approximately 40-50%.