Dec-03-2022 05:56 AM
Dec-08-2022 10:26 AM
Dadoffourgirls wrote:For perspective....
And I hope the taxpayers appreciate this. I read that they are paying $15.4 Million for Pepsi to have this.
And I hope you approve of the $40,000 per every semi coming from the Federal Government. That would be like giving 4 people $10k towards their student loans.
Dec-08-2022 08:15 AM
Dec-08-2022 07:40 AM
Dec-08-2022 07:09 AM
JRscooby wrote:Groover wrote:
I have heard that a leading cause of runaway trucks is drivers missing a gear at a bad time. Regen should eliminate that.
I think the "missed shift" is less of issue the last few decades. In the days past, like my '76 Pete, (by then that set-up was rare. But that was the 3rd truck the 1693 was in. Likely the gearboxes where from earlier times too) with 2 non synchronized transmissions, trying a split, getting both boxes in neutral, getting back in gear was hard.
And driver not wanting to show they missed was issue. Going up hill, speed would drop fast enough with the peaky torque curve, by the time got in a gear could not pull. Down steep hill, the best idea is save the brakes by standing hard until stopped.
But many trucks sold in the last 15 years (or what I saw last time I was used truck shopping) for fleet operations had some form of computer controlled auto-shift. Bell, the Super 10 in my '95 Pete, moved the stick once from 40 MPH to topped out.
Dec-07-2022 02:01 PM
Groover wrote:
I have heard that a leading cause of runaway trucks is drivers missing a gear at a bad time. Regen should eliminate that.
Dec-07-2022 01:14 PM
Dec-07-2022 12:37 PM
Groover wrote:free radical wrote:Turtle n Peeps wrote:FishOnOne wrote:
Here's video put out by Tesla for a fully loaded 500 mile run. I do find it interesting there's no passenger seat.
Link
I find it interesting what is "fully loaded." Is it fully loaded with Mike's my pillow pillows? Is it fully loaded to gross max weight? Is it fully loaded to volume? Is 10,000 lbs net fully loaded?
Words matter...
I find it interesting the route was never mentioned. I get pretty good fuel mileage when I measure my mileage at the top of the Ike grade going down hill. Now going up the Ike...
Words matter...
Ah but does your fuel tank refils on the way down !?
Tesla bateries do get recharged going downhill. Can you say free energy? I knew you could :B
Heres the full delivery vid.
Somewhere around 16 min is the good stuff
https://youtu.be/LtOqU2o81iI
The energy recovered is better than free. Due to the energy being recovered the brakes rarely get used. The expectation is that a fully loaded Tesla semi can go down any interstate highway hills without speeding up and without touching the brakes. The brakes should last the life of the vehicle.
One thing that does not seem to be getting mentioned is that the Tesla semi went up the Grapevine hill at or over 60mph. I think that a lot of us will appreciate it when we can make a trip without getting stuck behind semis cranking up a hill at 45mph. But we probably won't give it a second thought either.
Dec-07-2022 12:34 PM
Reisender wrote:JRscooby wrote:Bird Freak wrote:
Sounds good for a local truck but not for cross country.
I don't know about that. Many, if not most, LTL loads move terminal to terminal. 500 miles will most times be near the 11 hour driver daily limit, so terminals are spaced at about that. So spend up to 10 hours charging while trailer is reloaded. Ready for another day.
For sure would not be good for slip-sheet, or even slip-seat operations. Will need to put chargers in parking spots for irregular route operations, but will happen.
Yah good points. As well charging to 70 percent is 30 minutes and that last 30 percent wouldn’t take more than another 45 minutes. My guess is fleet operators will employ them where it makes sense.
As well not all loads will be at max which will extend range. A load of Doritos will weigh a lot less than a load of concrete curbs. As well not all routes have grades like the grapevine that the test trucks did.
We actually see this in real world with our smaller more aerodynamic trailer being towed by our tesla. (Picture below). Ford lightnings are struggling to get 120 kilometers of range pulling bigger heavier boxy travel trailers. We can tow double that range with an SUV that has a 30 percent smaller battery. I’m not knowledgeable about these things but I would assume that some of this physics carry’s thru to the big boys.
Jmho. Definitely not an expert.
Dec-07-2022 12:23 PM
free radical wrote:Turtle n Peeps wrote:FishOnOne wrote:
Here's video put out by Tesla for a fully loaded 500 mile run. I do find it interesting there's no passenger seat.
Link
I find it interesting what is "fully loaded." Is it fully loaded with Mike's my pillow pillows? Is it fully loaded to gross max weight? Is it fully loaded to volume? Is 10,000 lbs net fully loaded?
Words matter...
I find it interesting the route was never mentioned. I get pretty good fuel mileage when I measure my mileage at the top of the Ike grade going down hill. Now going up the Ike...
Words matter...
Ah but does your fuel tank refils on the way down !?
Tesla bateries do get recharged going downhill. Can you say free energy? I knew you could :B
Heres the full delivery vid.
Somewhere around 16 min is the good stuff
https://youtu.be/LtOqU2o81iI
Dec-07-2022 03:18 AM
Reisender wrote:schlep1967 wrote:
SO they left an elevation of 5,000 feet and drove basically downhill for 500 miles to an elevation of 5oo feet in a truck that regenerates it's batteries when going downhill.
Can it make the same loaded run in the other direction?
Hmmm. You may be interpreting that graph wrong. They went from Fremont to San Diego via the grape vine. So start at roughly sea level, over the grape vine and back to roughly sea level. Start in the bottom left hand corner to see the altitude and follow the changes. The grape vine is pretty obvious but there are some other grades as well.
This kind of graph presentation is common to all Tesla software displays.
Dec-06-2022 11:42 AM
schlep1967 wrote:
SO they left an elevation of 5,000 feet and drove basically downhill for 500 miles to an elevation of 5oo feet in a truck that regenerates it's batteries when going downhill.
Can it make the same loaded run in the other direction?
Dec-06-2022 11:14 AM
Dec-05-2022 09:42 PM
Dadoffourgirls wrote:
Let's see this vehicle in operation in Ohio, Indiana, or anyplace that is currently near freezing.
Dec-05-2022 05:54 PM
Dec-05-2022 02:15 PM