I managed to break two 12t single-bevel gears in 3L differentials before concluding that trying to use them with an ungeared XL motor really was a bad idea. My question is, how much torque can those gears take (in the 3L differential) before breaking? It's clearly somewhat less than the maximum torque produced by the XL motor, since my gears broke when I was powering the motor with the 7V rechargeable battery and the dial on the battery was (I think) turned to just below the maximum setting. Will two L motors break the bevel gears? Both the official stats and Philo's site show the L motors as having just under half the torque of the XL (though they list different absolute values).
On a related note, will the gears survive more torque in an old-style 4L differential when two half-bushes and a fourth bevel gear are added to reinforce them?
Thanks!