does anyone know a simple way of finding the cog on any car, particularly a CRX? Has anyone already done this to a CRX so I can use it as a guideline? before any wiseguys suggest it, no I cannot hang my car from strings.

 

you need some ramps and accurate 4 wheel scales. the kind racers use and cost $1000. then youd be able to do the calculations to determing the exact center of gravity.

but what use it is? what are you trying to accomplish?

 

Im designing a datalogging system for a SAE formula car. I wanted to be able to test it and compare the results to the performance of my CRX. the accelerometers must be placed at the center of gravity to have any usable data.

 

well i think it was in one of carroll smiths books that showed how to calculate the cog. if you can imagine, knowing the weights at each corner level, then at a known angle, you can do the trig to calculate the cog.

what accelerometers and dataq are you using? just curious.