What are the modifications required to implement the electric brake mechanism?
The slot through the fuselage bottom is longer and wider than plans, and additional attachment points get added onto the seat-back brace for the electric mechanism. All modifications are easily accomplished, but it is best to have the mechanism in your possession before starting the landing brake construction (or even before glassing the outside of the fuselage in Chapter 7). Each installation is a custom fit and slot dimensions vary widely. In general, plan on a slot about 3/4″ to 1-1/4″ wide and about as long as the plans slot.