acceleration measure (was Re: G-Tech meter )

[Mike Turner]

You wrote:

>>From: Arnaldo Echevarria <aec at cedar.netten.net> @ INTERNET
>>
>>At 08:53 AM 5/2/97 -0500, you wrote:
>>>...
>>>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.
>>>....
>>
>>I'm working on a product that would attach a hall effect sensor
>>to the right front spindle of your vehicle and read the grooves
>>in the rotor.  Interpreting that information would give you
>>VERY accurate 1/4 times / acceleration times / hp.
>>
>>The only time it would be innacurate would be if the front right
>>tire came off the ground.  But if you're producing that much
>>hp you don't need to be testing your car on the street.....
>>
>>Anyone interested?
>>
>>Arnaldo
>>aec at netten.net

I am. Have you run into problems with the rotor's exceeding the Curie temp 
after extended hard braking? How much gap clearance do you require?