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re: Tuning, Times and Dyno's



Martin Miller wrote:
> I have noticed when a acceleration test is done by a magazine
> or "consumer report", the device used is a bicycle type wheel which
> is strapped along side.
[...]
>     I have searched the net with no luck on finding said device.
> Perhaps one you know the proper name or have access for a weekend.

Most use an optical device now. From the Car & Driver Road Test Digest
page:

"Time, speed, and distance are measured with a Datron Correvit optical
fifth wheel. All performance results are corrected to standard
atmospheric conditions."

A quick internet search for "Datron Correvit" yielded some interesting
pages on performance testing as well as Datron's homepage:
http://www.datron.com/

BTW, they appear to be a German or Austrian company from a quick glance
at their site.
- -- 
Ron Katona

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