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coastdown software
If there is any interest around here, and no previous solution, I am interested in writing a software package to calculate CdA and rolling resistance. I plan on using the usb-gps module that came with my Microsoft Streets and Trips software, and writing the software in VB6 for simplicity.
My expected usage will go something like this:
1. find a long, flat, straight, level, little-used road in the country
2. wait for a windless day
3. get up to speed (faster is better, but lets not make the evening news)
4. pop it into neutral
5. click "go" on your laptop
6. wait till the car stops
I can use the gps to give me speed updates every second and calculate CdA from that. I expect it would take me about 5 hours of work plus 10 hours of research (interface to gps, re-learn vb coding).
I'd be a big time hypocrit if I charged for the software, so of course it would be free for distrobution.
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