Recent content by bartvandeenen

Funny you talking about a bit of road that is straight and only dips a little. Where I live in Dutch reclaimed land, most roads are straight as an arrow and completely level. Boring! I'd love to see others do the same experiment, and see the results. The trick is in setting the gears in...

I was actually trying to figure out how inefficient an ICE + gearbox are, compared to an all electric drive. So I figured, I need the wheels, axle and suspension, and the car body, and I wanted to know how much power it would take to keep that combination moving. As far as the road being...

I don't think the speedometer was wrong at all. What my test shows is that the 50kW of your Peugeot 106 goes almost completely into turning over the engine and the gearbox. By switching your gearbox to neutral, you take those losses out of the car friction, and you find out what road and air...

With only 10% change in speed it seems that the averaging should not create major non-linearity problems.

It seems to me a typical gasoline car has wastes about 95% of the gasoline energy before any rotating energy gets to the wheels. Here's my reasoning. I once measured my cars efficiency (an old Renault 5). I drove 100 km/h (28m/s) on a flat and level freeway, with no wind, and set the gears...