Chassis dynos exposed

[Bruce Plecan]

-----Original Message-----
From: Clarence L.Snyder <clare.snyder.on.ca at ibm.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Saturday, March 13, 1999 12:09 AM
Subject: Re: Chassis dynos exposed

Clayton used to make them.
Bruce


>> That's an engine dyno setup, I've never seen a car dyno of this type.
>> The dynojet type systems have been around for at least three years (my
>> earliest chassis dyno runs)
>> 
>> [...]
>The "rolling road" dynos - can't remember the brand but my memory seems
>to think Stewart Warner or ? from the sixties/seventies were combination
>load cell/inertia units. The inertia rollers could be used for brake
>testing as well as making the load test realistic. No fancy PC to
>control it, but in skilled hands you could do a full RPM range, through
>the gears, in about 2 minutes flat. The readings were strictly RPM and
>torque from which the horsepower was derived using a circular slide rule
>supplied with the unit. If I remember correctly there was a paper strip
>readout, like a printing calculator available. The one we had at the
>college just used a second body to write the numbers when you pushed the
>meter lock button. Pick your RPM, throttle up, load it down, balance
>load and throttle until the RPM at WOT was at spec, and read the torque.
>