Here are the differences between the tarot motor mount v1 and v2. The upper picture shows v1 the lower one v2. V1 is lighter than V2.
V1=17gramms
V2=32gramms
For version 2 there has to be drilled a hole through the arms with 2,5 mm diameter. V1 is only for clamping. V2 has bigger measures so the motor is much safer when hitting obstacles or at crashing. Ok only if you have these fat pancake t-motors 4006 on board. Other motor setups will vary in size.
