[W126 Coupe] G-Tech Accelerometer

[Dan Landiss]

Shayegan, Richard wrote:

>Well, this quotation is from a gtech support staffer on the gtech forums
>"basically the RPMs rely on the "alternator ripple" that is superimposed
>on the 12V DC."
>(http://www.gtechproforums.com/forums/showthread.php?t=899&highlight=rpm
>s)
>  
>
Ahh, so you would also have to program in the pulley ratio.

>They also mention it working based on an electronic rpm signal in
>various parts of the owner's manual
>http://www.gtechprosupport.com/support/manuals/RR4.0.pdf
>  
>
That section suggests a manual calibration procedure; that could replace 
the pulley ratio idea.

I did note that the G-Techie was forthright about a few problems with 
the system -- weak signal, noise, poor resolution. I suppose it's OK for 
a cheapie, but I sure like our Race Technology DL-1 Data Logger!

--
Never argue with a dragon, for you are crunchy and taste good with ketchup.