setting ignition curves without dyno

[Marc Piccioni]

A system like this already exist in heavy industry, its used to measure 
driveshaft  torque in steel rolling mills where an overload could cost 
hundred of thousand of $$ to repair. If any one is interested I'll try and 
did up info on htis system.

----------
From: 	Clarence L.Snyder[SMTP:clare.snyder.on.ca at ibm.net]
Sent: 	November 12, 1998 6:16 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.



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