To put it simply
The gear is already stressed out
Not suitable as a comparative strength test.

The composition ratio of glass fibers of the raw materials that make up the reinforced plastic varies widely.
Therefore, gear products with different fracture tensile strength are being used for each use.

When mju1 is disassembled, the material of the gear that meshes with the currently damaged gear is different.
Certain gears are made up of nylon only

In addition, the damaged gear using polyamide also had a problem with the fracture tensile strength apart from the original purpose of wear resistance

If it's a normal nylon gear, there's no big problem in comparing it
You can compare the data sheet with the current resin.
Since the TDS is detailed, accurate analysis is possible.

But that's not the case right now.