Quote:
Originally Posted by phuber
The whole question is whether there's a factor of a thousand floating around in the last term on the right side.
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Floating around no.
The way they described the form of the equation would leave a novice to make some mathematical errors ... but we don't know the actual math they did ... so we don't know if they accounted for it already in the math they did.
Meaning the form of the equation as they wrote it is misleading ... and is not in a form that is conducive to just plugging in numbers.
Quote:
Originally Posted by phuber
I suppose I could start plugging numbers and see if the aerodynamic drag is 20 Watts instead of 20 Kw at some moderate speed. By taking the total derivative and plugging some numbers it should be possible to make some intelligent estimates about what factors have what effect at various speeds.
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I can save you a bit of work if you like ... I already have a spread sheet that among other things ( BEV range estimates , pollution estimates, etc ) ... it also breaks out the Rolling resistance , Aerodynamic Drag, Gravity drag ... change the conditions and it auto calculates the results .... It includes various Vehicles including The Gen-1 Insight.
The Full file ( too large to post even zipped ) includes another ~186 more vehicles... but this smaller one should still save you some time and math work for changing different factors ... be it average speed , weight, wind speed, etc...
