Originally Posted by bsbauman
+1 this deserves repeating, and reposting on the front page of every PA thread.
I'll argue this point. Admittidely i've not seen where the Motor boxes have been failing on PA's other models but from my understanding it is not cracking around the shaft hole. I may not be an Engineer but many years working on full size aircraft along with other mechanical items has shown me that by enlarging that hole (within reason) the strength losses would be extremely marginal. In fact I would quite happily remove most the centre front plate and just leave the 5-10mm arounf the edges with small legs where the mounting bolts go through.
IMO it's just PA being PA, i.e. trying to protect there own interests and profits by putting another supposed roadblock in people's way for attempting to fit another brand motor.