Quote:
Originally Posted by Drifter
I suspect you'd have to be extremely diligent to discern small aero changes with a 25mph coast down test since rolling resistance would be the primary force working against you at those speeds.
Your end on an uphill idea is a good one if you wanted to do quick & dirty A B A testing. Using flat ground (and averaging runs in both directions) would be better if you wanted to take your speed vs time/distance data and try to calculate your car's coefficient of rolling resistance & CdA in a spreadsheet.
|
Here’s a random idea, tell me if it’s flawed,
Say I find two markers or objects, like street signs or light poles or whatever they are maybe a quarter mile apart?
I drive to 70 miles per hour, and when I get ti the first check point, put it in neutral and start a timer. Then measure how many seconds it took to get to the second check point. Do it a few times for an average.
Then put on the aero mod, and do the same exact test, and if it took less time to reach the check point, even by 2-3 seconds, that clearly means the aero mod is working right?
Or is that test idea bad?