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. <EOS>