setting ignition curves without dyno

[Don.F.Broadus at ucm.com]

You would have to use slip rings (4) to read the output of the strain gauge
on the drive shaft, this could be impractical
For a variety of reasons.  Land and Sea dynos WWW.land-and-sea.com
<http://WWW.land-and-sea.com>   use an inductive or magnetorestrictive
sensor
That reads out the drive shaft twist  that can be calculated for torque.
This is a non contact sensor . Good luck with your
Dyno project.  

	-----Original Message-----
	From:	Clarence L.Snyder [SMTP:clare.snyder.on.ca at ibm.net]
	Sent:	Thursday, November 12, 1998 7:17 AM
	To:	diy_efi at efi332.eng.ohio-state.edu
	Subject:	Re: setting ignition curves without dyno

	Tom Sharpe wrote:
	> 
	> Greg Hermann wrote:
	> 
	> > >How about this idea..............actually build a dyno into
your car. 
	Put a strain gauge on the driveshaft. You might need to cuctom make
a
	shaft with a torsion bar in it. If so, put in an inductive device to
	charge the battery for the transducer as well, and a centifugal
switch
	to turn it on when the shaft rotates. Feed this displacement data
	(torque) and engine rpm, as well as gear ratio, to laptop for HP
calc.
	Better yet, forget engine RPM and gear ratio and simply sense
driveshaft
	RPM.
	Simple, accurate (as accurate as your calibration, at any rate) and
	elegent.