🚀 go-pugleaf

In article <31487@hydra.gatech.EDU>, gt0297a@prism.gatech.EDU (Tim Drury) writes:
> is there an accurate, *cheap* method of measuring vehicle speed without
> measuring off the front or rear wheels?  this is to be used in a proto-
> type traction control system on a race car.  the speed of the rear
> wheels will be compared with the true vehicle speed to determine if
> traction is lost.  since the front wheels will rotate at differing speeds
> in turns they can't be used.
> is there an easy way to use infrared doppler or something like it?
> 
> -tim drury
> gt0297a@hydra.gatech.edu
 Unfortunatly, it is very difficult to acuratly measure your speed by any
cheap means. Front wheels is probably more than adequite for your purposes,
and a relativly cheap way of doing this is to buy a rally computer, eg
Terratrip or such, which has a magnetic probe which works off the front wheels

It would PROBABLY be accurate enough.  



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Carl Ivan the terrible @ chemeng stinkfarm @ unimelb Australia
DEATH to Automatic transmissions, Front Wheel drive and Front Wheel Handbrakes
Sideways forever  Carl@ecr.mu.oz.au (it takes BALLS to use UNIX)