I was going over all of my current options to do some ¼ mile testing at home when I realized that, using a computer and a speed sensor, I could build a better system than the gtech and even the AP22.

I figure that if I could add a speed sensor to a rear wheel, I could accurately gauge distance traveled, and as a result...speed. This data could be used for all acceleration tests.

This data could also be graphed in a similar fashion to that of a dynometer (the concept is very similar), provided that you keep the weight/track conditions consistent. I think this would yield more accurate results than a dyno, as they would be real-world results as the car would actually be moving (real wind instead of fans).

Any ideas as to how I could connect a speed sensor to a rear wheel? I’d tap into the sensor that’s in the tranny, but then wheel spin would spoil the data.

Any help/comments appreciated...

-Sryth...
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'98 SE 5spd, Pebble Beige, PRCAI
Pacesetter STS, Stillen Y, Stillen FSTB and ACT Clutch on the way!

 

What kind of a speed sensor will you be using? I don't know anything about you will be doing this for a car.

I've seen bicycles use sensors mounted on the fork that senses a magnet each time it passes (it's mounted on the spoke). If your sensor works the same way, why not mount it off of the brake calpier assembly and put the magnet on the inside of your rear rim?

Just a thought, don't know how helpful it will be . . . good luck and let me know how this turns out.