pic: Its twins - prototype drives

[asid61]

Originally Posted by Cothron Theiss

Are those figures assuming that exact center to center spacing is used? If so, spacing those gears out just a few thousandths can squeeze out some extra percentage points to make up for any loss. It's the first stage of gearing, so the loss in load capacity shouldn't be an issue.

Looking at that page, I realized the OP could probably switch to spiral bevel gears without much increase in price, depending on the supplier they're using, but since they already have the straight bevel gears they need, it probably doesn't matter.

Spiral gears tend to be 2-3x as expensive as straight tooth, and IIRC don't give an efficiency advantage as much as they do a quietness advantage.
The quoted numbers have no context, but I would assume most FRC bots will get less efficiency.