A torque limiter, TL, for torque transmission, TT, to downstream components, comprising: an input shaft comprising reaction faces, which face in opposite directions, and a cam profile; an output shaft comprising a gear, which is communicative with the downstream components, and first and second ends, the output shaft defining slots comprising sides with which the reaction faces are alignable; a roller jammer with which the cam profile engages; and a torsional spring comprising first tangs at the first end of the output shaft and opposing one another by 180° and second tangs at the second end of the output shaft and opposing one another by 180°, the torsional spring being preloadable by a preload torque to align the first tangs and the second tangs whereupon, with the torsional spring fit about the output shaft and the output shaft fit about the input shaft, the first and second tangs are slidable into the slots and against the reaction faces, the first tangs and the second tangs are offset by a preload angle based on a torque requirement at the output shaft, and, for clockwise and counter clockwise input shaft rotation: first TT paths proceed from the input shaft to the output shaft through the torsional spring in a first direction when downstream torque of the downstream components deceeds the preload torque to characterize normal operations, and a second TT path proceeds from the input shaft through the torsional spring in a second direction to an external structure via the roller j ammer when the downstream torque exceeds the preload torque to characterize a jammed condition. an input shaft comprising reaction faces, which face in opposite directions, and a cam profile; an output shaft comprising a gear, which is communicative with the downstream components, and first and second ends, the output shaft defining slots comprising sides with which the reaction faces are alignable; a roller jammer with which the cam profile engages; and a torsional spring comprising first tangs at the first end of the output shaft and opposing one another by 180° and second tangs at the second end of the output shaft and opposing one another by 180°, the torsional spring being preloadable by a preload torque to align the first tangs and the second tangs whereupon, with the torsional spring fit about the output shaft and the output shaft fit about the input shaft, the first and second tangs are slidable into the slots and against the reaction faces, the first tangs and the second tangs are offset by a preload angle based on a torque requirement at the output shaft, and, for clockwise and counter clockwise input shaft rotation: first TT paths proceed from the input shaft to the output shaft through the torsional spring in a first direction when downstream torque of the downstream components deceeds the preload torque to characterize normal operations, and a second TT path proceeds from the input shaft through the torsional spring in a second direction to an external structure via the roller j ammer when the downstream torque exceeds the preload torque to characterize a jammed condition. first TT paths proceed from the input shaft to the output shaft through the torsional spring in a first direction when downstream torque of the downstream components deceeds the preload torque to characterize normal operations, and a second TT path proceeds from the input shaft through the torsional spring in a second direction to an external structure via the roller j ammer when the downstream torque exceeds the preload torque to characterize a jammed condition.