BTW, what scratchonly said about the oz/in deal is correct. If you look closely at the chart you can see the effect he's talking about. The .4" arm location on the servo could provide 100oz max push/pull compared to the .5" arm providing 80oz. But that'd be in a controlled test of the max torque available. Which is certainly of value to know. But our working environment pretty much makes that moot.

For example, if your RX pack is fresh, it'll probably be providing over 5V. And our servos put out more power with higher voltage. And of course, they actually put out whatever is asked for within their ability to do so. So in practice, the rating is just a comparative bit of info.

But we can use that info off the chart to get an idea of how "easy" it is for the servo to work depending on the arm length. The farther from the center for the servo arm, the less max force that servo can provide.