acceleration measure (was Re: G-Tech meter )

[Tom Cloud]

Some time last year, we had a thread similar to this and several
(Todd Knighton comes to mind .... I think) gently discouraged
me from using acceleration as a tuning tool.

However, my idea was to take a signal from the tach or the
speedo and differentiate it (feed it through a cap).  The
resultant signal would be accel/decel and wouldn't care
which direction you were pointed.  One difference with the
'real' acceleration devices is that wheel spin would register
as _severe_ acceleration when none was occuring.

This way, if you wanted to go cheap, you could get a cheap
RustRak recorder and record it -- or A-D the speedo and
read it into your laptop and massage it there.  That way
you could spend the $300 on some nice software or take
your SO to a nice restaurant and still have enough left
over to buy that nice cam  ;-)

>Could I get the source for the accelerometer cell.  That could be fun to
>experiment with.  Maybee try 3 axis and compensate for hills and turns.
>
>
>>I sawthese advertised and thought that it would be simple to make up 
>>my own.  Sure enough within a week I had a fully built and working 
>>accelerometer.  The one that I built is programmable for the 
>>acceleration speeds, i.e. you could time 50 -70mph or 0-100 if you

        [ snip ]

Tom Cloud <cloud at peaches.ph.utexas.edu>