[wesley]

I mentioned this on another thread, but here's part 1 of the video about it.

In a nutshell, I attempted to drive 624km or 388 miles on a single charge while driving mostly on expressways (highways). The video concerns the first half of the leg, where I spent 49.8% of the battery to go 311.9km or 193.8 miles. I was driving with the cruise control set at 80km/h (50mph), which in reality was about 77km/h (48mph). This is about the bare minimum for the roads because that's the speed limit for the cargo trucks here.

Note that I just recorded the video in both Korean and English at once, so there's a lot of going back and forth.

 

[EV Engineering]

Bolt propulsion unit is very efficient at this speeds... rotor sped map efficiency is from this speed you traveled up to 64 MPH past this speed motor map efficiency also drops besides higher wind resistance. You can use carscanner app and figure out most efficient rotor speed to get maximum mileage.

 

[wesley]

Bolt propulsion unit is very efficient at this speeds... rotor sped map efficiency is from this speed you traveled up to 64 MPH past this speed motor map efficiency also drops besides higher wind resistance. You can use carscanner app and figure out most efficient rotor speed to get maximum mileage.

I think the torque curve flattens out at around 80-85km/h, and the manual also suggests driving below 89km/h for efficient driving. Beyond that point, I did experience the efficiency dropping noticeably for every km/h added.

 

[Packard V8]

I was driving with the cruise control set at 80km/h (50mph), which in reality was about 77km/h (48mph). This is about the bare minimum for the roads because that's the speed limit for the cargo trucks here.

All data points appreciated. Just sayin' traveling 48 MPH in some cities here in the US would get one run over on the arterials. Out here in the far-ass-end-of-nowhere, highway speed is 80 MPH. When I get passed by a raised F250/2500 with off-road tires and he's running more than 80 MPH, I always wonder if he's ever done the math for 8 MPG @ $6 a gallon.

jack vines

 

[NorBC_Bolt]

When I get passed by a raised F250/2500 with off-road tires and he's running more than 80 MPH, I always wonder if he's ever done the math for 8 MPG @ $6 a gallon.

jack vines

I don't expect that those people have done any math since grade 9 🤣

 

[EV Engineering]

I don't expect that those people have done any math since grade 9 🤣

To some is number of smiles per mile, cost of fuel is irrelevant.

 

[NorBC_Bolt]

To some is number of smiles per mile, cost of fuel is irrelevant.

I don't think they would be smiling when they get to the gas pump. Ever been in a F350? Not exactly a thrilling ride.

 

[EV Engineering]

I don't think they would be smiling when they get to the gas pump. Ever been in a F350? Not exactly a thrilling ride.

My RedEye with E85 gets 6-9 MPG in city and 12-16 on interstate and I'm perfectly prepared for wallet shock every time I fill up. It is custom built engine 1200 HP on conservative tune. And regarding F350 diesel engine people who have them, it is the last thing that they are worried about. I have F350 and it is used to move staff and not for driving around to have coffee. But for Farmer it is vehicle to do all, coffee, going to see girlfriend and etc. So how many smiles per mile is important to some people 😄.

 

[wesley]

Here's the second half of the trip on video. I only talk in Korean this time, so you should enable English subtitles to watch it.

The entire journey lasted 624.4km (388.0 miles) with 59.6kWh of energy spent. Since there was 2.745% of the battery left, the estimated capacity of the new battery is 61.28kWh. I noticed no issues with charging, with expected amount of charging loss present.

I should note that going at this speed made the trip last about 40 minutes longer each way than what it normally takes for me. So this was not quite time efficient. Time would be better spent using a DCFC near the destination. But it did tell me that I wouldn't need to drastically slow down to conserve energy in low battery situations.