Accelerometers

[Heath Parker]

	Not to beat a horse to death, but to correct for inclines/declines, why
not mount another one in the vertical plane (up/down)? It would be
necessary to either filter it or find one with a slow reaction time; then
use some simple physics to account for the grade, which will be reflected
in a less than 1 g reading.  I also imagine that having the accelerometer
mounted to the auto's windshield might be an issue-- I don't know of any
cars w/o weight transfer to the rear wheels and the  corresponding change
in angle of the vehicle to the level surface.

				Just a few random thoughts . . .

				Heath Parker
				heathp at usouthal.campus.mci.net 

----------
From: Geoff Watts <geoff at omen.com.au>
To: 'diy_efi at coulomb.eng.ohio-state.edu'
Subject: RE: G-Tech meter 
Date: Thursday, May 01, 1997 3:48 AM

As far as I know it's a solid state accelerometer, which uses the inputs of
the accelerometer (m/sec/sec (g's)) and integrates it with time (for
speed/distance), and with the weight of the car for HP.

Analog Devices make a good accelerometer, and I'm playing with hooking one
up to my laptop, and ultimatly an HC11 so I don't have to fork out $300 for
one of those g-tech beasties (that's what amcap in Western Australia want
for one).

More non-EFI drivel from my account .. I shutup now

geoff

-----Original Message-----
From:	dzorde [SMTP:dzorde at geocities.com]
Sent:	Wednesday, April 30, 1997 2:29 PM
To:	diy_efi at coulomb.eng.ohio-state.edu
Subject:	G-Tech meter 

Has anyone heard of an aftermarket measurement device called a G-tech meter
(at least that's what I think its called).  It's a small unit that sticks
to
your windscreen with a suction cup and plugs into the cigarette lighter
socket for power.  It will give you g-forces, 1/4 mile time, HP rating and
a
few other things I think.  Someone in our car club bought one to try out
and
he said it was quite accurate, the HP reading was 2HP less than actual
measurements from dyno testing.  His 1/4 mile times were also close to
actual times.

----------