laptop HP measurement (Was g meter)

[Frederic Breitwieser]

> Well...okay. Not great--but it can work. This PCdyno uses sensors, records
> speed, "G" forces and calculates HP based on accelerometer inputs to the
> laptop. He claims accuracy within one HP + or -. Guess you have to try it to
> know...

We did try and and thought it was pretty good.  One of the advantages of
this system is you can record using a tape recorder, then dump it into
your sound card later on, though you get more "noise" in the signal. 
Use high quality tapes.  However some racing classes don't want to see
gizmos and electronic stuff, which a tape recorder is of course, but
easier to hide than a laptop.  Duct tape under the dash comes to mind :)