SM-S2313M SpringRC rc model airplane servo - Small analog servo with single ball bearing and 4 metal and 1 plastic gear.
SM-S3317B SpringRC rc model airplane servo - Small analog servo with plastic gears.
Designed and recommended were low weight, speed and accuracy is essential.
Power HD S35 servo for rc model airplanes - Very strong and very fast digital servo with brushless motor, double ball bearing, titanium gears and aluminium middle hull.
Power HD S25 servo for rc model airplanes - Very strong and very fast digital servo with brushless motor, double ball bearing, titanium gears and aluminium middle hull.
Power HD B5 servo for rc model airplanes - Strong and very fast digital servo with brushless motor, double ball bearing, titanium gears and aluminium middle hull.
Power HD B2 servo for rc model airplanes - Very strong and fast digital servo with brushless motor, double ball bearing, titanium gears and aluminium middle hull.
For engines between 50 - 60 cc, including Hamilton logo.