E-flite Aeronca Champ 15e ARF - Manual (Page 13)

13 E-flite Aeronca Champ 15e ARF Assembly Manual
 11. Use a pin vise and 1/16-inch (1.5mm) drill bit
to drill the four holes for the cowl mounting screws.
Use the card stock in locating these screws.
 12. Remove the propeller adapter, cowling, card
stock and tape from the fuselage. Apply 2–3 drops
of thin CA in each of the holes drilled to harden the
surrounding wood. This will help prevent the screws
from vibrating loose in flight.
 13. Use four 2mm x 8mm sheet metal screws to
secure the cowling to the fuselage. Tighten the
screws using a #1 Phillips screwdriver.
Always balance your propeller. An unbalanced
propeller can cause vibrations to be transmitted
into the airframe, which could damage the
airframe or other components as well as
produce unwanted flight characteristics.
 14. Slide the propeller on the propeller adapter.
It may be necessary to enlarge the hole in the
propeller slightly to fit the adapter.
 15. Slide the propeller assembly on the motor shaft.
Use a 3/32-inch hex wrench to tighten the adapter
nut, securing the propeller assembly to the motor
shaft.
If you find the adapter rubbing on the cowling,
use a pin vise and 5/64-inch (2mm) drill bit to
enlarge the holes in the cowling. This will allow some
adjustment to reposition the cowling on the fuselage.