A servo arm set in epoxy board for a 100cc class aircraft. Epoxy board (glass-reinforced laminate) is used for arms at this size because a large model loads its servos hard: a moulded plastic arm can twist or strip at the spline, while a laminated board arm keeps its geometry under load.
The set covers a full airframe — aileron, elevator and rudder positions — so all the arms on the model are matched. Mixing arm lengths between surfaces changes the mechanical advantage each servo sees, which is why buying them as a set is the sensible approach.
Check the spline count and the hole spacing against your servo make before fitting.
Reviews
There are no reviews yet.