ORIGINAL: jetmech05
the bad to those motor mounts in the link are....the motor can slip in the mount if you have a hard landing and strike the prop or the spinner
Which is NOT necessarily a bad thing!
Movement caused by impact, acts to absorb energy and may prevent damage to the motor shaft, etc.
I've had exactly that happen with this type of mount.
You just have to be a bit more observant with the motor position after a crash...
The upside is that anything which will cause the motor to shift, is going to do a good amount of damage.
A prop strike is not enough to move the motor if you have it properly torqued down.... The prop will go first.