Well it looks like Banks is out looking for a better dyno.
Sadly we don't get to see the flames.

 

As smart as that man is & the smart folks around him, how did he not see that coming? It's a friction brake dyno and cannot be expected to have a 100% duty cycle.

 

One would think that they know about that.
Likely they were so into what they were working on that they lost site of what they were doing.
Just like a pilot in a plane having problems that gets in to more problems by trying to fix the little
light that is not coming on and skips the first rule. Fly The Plane.
Not the best analogy but it works sort of.

 

They knew something to take temp reading after 2 minutes!
Maybe he said F'it, burn the baby up and we'll get a bigger one.

 

I think that's an eddy current dyno, which still gets hot as hell. All the brake test dynos in the industry were flywheel so my exposure is limited.

During the winter I and my guys would go out to Smither's Tire Test track in Pecos Texas when it was still open. They mostly did tire testing of all sorts, cars, OTR trucks and tractors. To develop loads they set up these huge Eddy current units on towed trailers, and they would only run Mack axles and transmissions to reverse drive the cell. But they had a huge cooling ability on each trailer. so you'd have the tractor trailers running the 10-mile circle 24/7 as well as huge farm tractors running in these smaller self-directed circles, towing not only the torque trailer but a fuel trailer as well. We never were allowed to get too close to get a good look. The air blowers on those trailers were louder than the trucks or tractors.

I could be totally wrong but it looks like the Banks dyno was designed around short bursts, not long term with cooling to the rotors ..... until now.














All of that is still the conversion of motion to heat energy, so those rotors need significant airflow if heating long term.