
suggests clearly that Challenger is some sort of accidental cross between a Superior Tramway and Riblet lift.
Think I'm joking when I show you an image of one of the towers that looks the most like a Riblet?
Then get this:

The tower you see here doesn't look a bit like a Riblet tower.
To me, it looks more like a Riblet with Superior Tramway towers, when you see this picture:

which appears to be of a Riblet loading station. The sheaves are also Riblets. In these findings, I can determine that Challenger is not a Superior Tramway lift at all.
I must give thanks to skierdude9450 for use of his photos.












