Micro Electric RC plane
Fig. g - The Motor
The Motor
The
motor and li-po came from a Wattage Flyer (~$35). At first I used the
gears and prop that came with the WF but in the version shown I changed
to a more efficient and larger prop (with slower gearing).
The
motor mounts were made of thick plastic sheet with three holes. See the
CAD drawing for dimensions. The motor and prop are angled down 4 deg.
Everything is press fit with no CA. This allows adjustment of prop
perpendicularity to fuse (but you might prefer to lock everything with
CA or epoxy). The shaft is music wire. The black plastic cylinder keeps
the shaft from sliding. The large gear is pushed up to the prop and
CA'ed so it will not move in a crash - only the black retainer cylinder
will slide. Check mesh at several angles of rotation - must have a
little play and not bind at all.
The ground wire is soldered to
the motor lead AND to the case for noise reduction. A capacitor across
the leads also reduces electrical noise. For wire I used part of a
multi-color ribbon cable.
