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Hi Robert,
I'm still collecting coast down data.
There are several very flat roads, out in the boonies on the way to work. Very little traffic, so I can coast from 50 or so mph, all the way to down to zero.
I just turn on the GPS about two miles in advance and let it record data every two seconds.
About every two weeks, the GPS data is downloaded to the computer for archival in a spreadsheet.
Still coming up with good data smoothing methods, as the GPS is rather rough in it's output.
If I were better with microcontroller programming, I would get one of those bicycle magnetic/pickup assemblies, mount it to the rear brake drum, calibrate it with the GPS, then simply record the frequency coming off the pickup as the wheel turns when slowing down.
For now, the GPS will have to do.
I plan on continuing the recording process as the weather gets warmer this spring, and then we can see what develops. It's basically free as I do this on the way to work each morning.
Robert, when do you start on your tail extension for your car? I'd like to start the planning phase this month.
Jim.
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