Hobby mechanical kits are provided. Kits illustratively include a hobby servo motor having a rotatable output shaft. The output shaft has gear teeth distributed around an outer diameter of the shaft. Certain embodiments of kits also include a hobby servo horn and a channel. The hobby servo horn has an inner diameter with gear teeth that correspond to the hobby servo output shaft gear teeth. The channel has a first panel, a second panel, and a third panel. The hobby servo horn and one of the panels of the channel include a star-shaped connection point.