Ask John lear which one's best

Depending on your design will depend if the 2 part mounts are any good for you or not. If you have a flexable base at all, I would recomend against them as beauty 2 found out. When the base of your robot gets flipped, the the base flexes and cracks the motor mount. Unless you have a nice solid aluminium gearbox like the Big Nipper guys use, I would go 1 peice.

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