Pressure Bar Reduction Gearing

[wylk]

Doug, thanks for the images. It's nice to see the gearing exposed.

Two hallmarks of a worm drive include the 90-degree angle between the worm and the gear, and the offset between the two axes. Here is another example:



Notice that the wheel's axis is offset to the left of the vertical pressure bars which strongly suggests a worm drive is inside the case. Bevel gears are the most likely candidate for transmitting the power to the horizontal bars.

In contrast, let's look at one of our favorites at One King West, Toronto:



Here the gearbox is huge plus the wheel's shaft and the pressure-bar shaft intersect which is not possible with a simple worm drive. There is probably more going on inside the case, but what?