Quote:
Originally Posted by j-c-c
You lost me.
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If you take the aerodynamic drag and rolling-resistance road-load horsepower requirement at 50-mph, add the powertrain loss, and engine accessory losses, you find that 15-brake-horsepower will be adequate to maintain the 50-mph velocity.
On a long, NASCAR superspeedway, like Daytona, Florida, the rolling-resistance drag power requirements will increase arithmetically with speed, while aerodynamic drag-related power requirements increase geometrically, as the cube of the velocity.
Passing, without a draft can easily require an additional horsepower / mph at the velocities they run at.
The 2021 Hennessey Venom 5 is allowing 1,850-horsepower for the 311- mph rated top speed.
At the Indianapolis 500, Dalara race cars have only 55-miles range per tank of fuel. Real range anxiety!
