Topeka 500AT Finally recorded!

[AllSafe]

Belt is probably slipping; the rotator is belt-driven right off the back of the chopper motor.

[Thunderbolt 612]

Superb. It sounds a lot like a rotating 3T22, or even a direct driven Thunderbolt.

[AllSafe]

A rare 10/12 model...not very many of these were made with a 10/12 chopper.

[red04stanggt]

That thing sounds bad arse

[Nelso90]

n the beginning it seems to be having rotational problems and then straightens up.

I'm guessing the rotator drive is actually taken off of the chopper motor. thus, initially the rotation speed is slow until it comes up to full speed- and notice the rotation slows as the siren winds down. AFAIK the ASC T-128 is the same way.

Nope, the 128 has a separate drive. It stops in attack.