pic: Spartonics 1503 - 2011

[Pat Fairbank]

Originally Posted by David Dawson

Holy reduction batman! Is that a rs755 mated to a cimulator mated to a gem 3 stage planetary connected to at least a 3:1 chain reduction? When i come up with solutions like this my team makes me sit in the corner. This year i had to power our arm with two rs755 mated with cimulator and a tough box plus 3:1 chain reduction to make up for the lack of gearing.

There's also a 2:1 gear reduction in there after the GEM, which makes the total reduction 889.2:1.

It works surprisingly well, but one thing we've discovered is that the GEM won't backdrive (the radial load from the gear it drives causes the output shaft to bind inside somewhere), so we use a big wrench when we need to move the arm without power.