Originally Posted by
Jerz616
That's a good reason, but I think the other way. We have had at least a dozen of the 2mm esc's break at our track in Dallas. They are not breaking at the pin, but rather the the shaft itself. It seems with the larger 2mm pin it's moving the breaking points out. I have been running 2sets of 1.5mm esc's for almost 2 years and have only replaced a few parts do to wear. Replacing a broken shaft will run you $30 whereas a broken pin or coupler cost $10. And it's not that the shafts were broken by hack drivers either.
100% agree, I have broken 3 shafts of 2mm pin ECS, all broke in the same spot as above. Countless other sets in the bin at our track from other racers too.
I was running the older 1.5mm but have recently changed to Team Magic ECS which are "tamiya style" with pins instead of grub screws. Very durable and still no bents shafts after a couple off big hits.