Ive got a Hacker A20-20L outrunner which I usually run on a 10x5 prop, I have built an own design MiG 29 and wanted to use this motor to power it.
The max prop diameter I can use is 7" (to fit between fuz sides) so I went for a 7" diameter and 7.5" pitch prop - but the performance wasnt that great despite it weighing only 15oz.
It was suggested to me that outrunners are no good for smaller props as they dont rev very high (or rather they produce max torque at lower revs)
Should I buy an 'inrunner' for this model?
Which motor should I buy bearing in mind I want max speed out of a (max) 7" diameter prop and a 3 cell lipo (ie 12v)
Many thanks for any help
David Bevan
formatting link