I associate them more with a trolley throttle. Not exact, but they have a somewhat prototypical look, like some desk and pillar throttles.
That's one of the things I like about the KW It seems the vertical shaft, rotating crank throttle was nearly all I've seen.
I'd question the advertised 300w. I have an 18b the 30b's little bro. It has a 170w rating and no meters. The KW is 190w.
A guess...a perception vs a test, but I don't see a 20w difference; is see a 30-40w spread easy. I also see Marx transformers as being overrated. I.e. those are either over rated or Lionel's are under rated imo.
I am curious about how that one may perform. My 18b has an occasional DC pulse that tmcc and railsounds pick up. A whistle/horn/bell activation (or dectivation) happens intermediately. Sometimes it is a non-stop blast, sometimes it might go an hour without a sound, but the bottom line is it is not sound board friendly. Sometimes PW whistles even manage a weak toot.
I think it's the use of multiple metals or the contacts on the deadman portion that does it.
It is the "funnest" transformer to use though. The handle is sprung to rise and disconnect from it's wedge clips. You depress the raised handle slightly to cycle the E-unit, all the way down when cycleing is complete. The throttle is adjustable whether the handle is down and on, or up and off.
