Subject: Strain gauging in-car
From: Paul
Date: 2/3/1999, 4:47 PM
To: z

David Munday wrote:

There's been a bunch of talk on the AirLAB list about using telemetry
to avoid slip rings in instrumenting rotating parts.  This plus the
fact that I've got a lead on a Turbo II RX7 for sale that needs a new
clutch has me thinking how nice it would be to strain gauge the output
shaft of the engine and combine the torque output with RPM to get
in-car instantaneous Hp.  I'd like to instrument the engine with temp
and pressure transducers and play with a drag wagon to do some engine
testing, but that can come later.  If this could be done, I'd like to
do it while I have the tranny out anyway.

So is there room in there to put strain gauges and a little telemetry
gear?

As a simpler alternative I could take the torque off the drive shaft
and account for the tranny with a multiplier, but then I've got losses
in the tranny unaccounted for.

--
David Munday  -  mundayde@muohio.noise.edu
My email address is not noisy.
Webpage: http://www.nku.edu/~munday
PP-ASEL  -  Tandem Flybaby Builder  -  EAA-284 (Waynesville, OH)
"Adopt, Adapt, and Improve" -- Motto of the Round Table

I think there may be room between the disk and the tranny.
Depends on how big the telemetry gear is?

Paul Lamar
 
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