Tony Burgh
Well-known member
- First Name
- Tony
- Joined
- Sep 28, 2021
- Threads
- 23
- Messages
- 991
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- 1,233
- Location
- Western Pennsylvania
- Vehicles
- 22 Lariat ER
- Occupation
- Retired
Much more work than I planned to do. Hahaha. Looks good.Dawg I'm way ahead of you.
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Overcoming rolling resistance and aero requires a combined ~1600N of force, 340N of rolling resistance and 1245N of air resistance, highly dependent on altitude, humidity, etc.
To figure out the energy required to counteract the force at 35.76 m/s, you need 1585N * 35.75m/s, or 56.6KW at the wheels, or 60KW with 5% losses and 400W of power overhead for other running systems.
60KW ~= 80HP. Efficiency tends to maximize around ~50% throttle, but given you can use that energy to recharge the battery, it doesn't really matter what power rating you have as long as you aren't going uphill and it's better than an MX-5 Miata.
Let me know if you want my spreadsheet.
P.S. I AM NOT SAYING the EREV Lightning has a Miata engine in it. I don't want to end up on Electrek!
My back of envelope scribbles got me to 100 bhp for Gen set of 40% efficiency.
Like you say, it ain’t gonna be a Briggs and Stratton lawnmower engine in the bed of the truck.
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