View Single Post
Old Nov 01, 2012, 09:38 PM
scirocco is offline
Find More Posts by scirocco
Registered User
scirocco's Avatar
Australia, ACT, Kambah
Joined Feb 2001
3,814 Posts
I don't see how you can say the size of the hole thru the firewall drives people to use PA motors. It's big enough for any normal shaft size for this class of motor, and I haven't seen an outrunner that front mounts that has any boss or collar that has to be there that would require enlarging the hole.

PA's own motors come with a collar installed for a rear mount, but the box says to remove the collar for front mounting. Other quality motors I have all came with the collar uninstalled, so one could argue that they are better suited than the PA motor.

The only restrictions on motor choice I can see are not related to the hole thru the firewall, but instead the actual internal dimensions of the motor box, and possibly mounting bolt pattern. For example, I can't put my Hyperion in there without carving away the angle balsa reinfocements, but my Scorpion with a tapered down front face is fine.
scirocco is offline Find More Posts by scirocco
Reply With Quote