Re: Wed nite drags

From: Bruce Aaron Hefner (gt9742a@prism.gatech.edu)
Date: Sun May 10 1998 - 18:03:41 EDT


>
> At 09:32 PM 5/9/98 -0400, you wrote:
> >In a message dated 98-05-09 15:47:56 EDT, you write:
> >
> ><< (Would turn your car
> > into a rolling dyno...) It'll allow you to correct for weather and stuff
> >too. Of
> > course, it'll give you 0-60 and 1/4 mile like the g-tech but also 1/8 mile,
> >etc >>
> >
> >Cooool, I have done some tinkering in electronis stuff, even have a couple of
> >bread boards lying around but you lost me in the microprocesser part fer
> >shurr, but if you figure it out and get up a parts list a info then I'd bet on
> >my being able to hack one out. How the heck do those things one where the end
> >of the 1/4 mile is, it just blows my mind as to how it can figure out this
> >stufff.
> >
>
> It uses the acceleration, basically. It can convert acceleration
> into velocity. Distance is velocity * time, so you just have to keep
> track of the time, and you'll know the distance you've travelled at all
> times. Then ya just stop the timer when you get to 1/4 mile...
>
> -Jon-
You can also get distance directly from the acceleration and time, without
first converting into velocity by D = 1/2* *A T + Initial velocity*T
(Which would be 0 from a dead stop so youcan drop it out of the
equation)...

Bruce



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