Reciprocating saw

A reciprocating saw comprising:

• a motor defining a motor axis, the motor including a front end, a motor shaft extending from the front end, and a back end, the front end including a front face defining a first vertical plane perpendicular to the motor axis, and the back end including a rear face opposite the front face, the rear face defining a second vertical plane parallel to the first vertical plane and perpendicular to the motor axis;
• a pinion coupled to the motor shaft;
• a gear that receives torque from the pinion;
• a dual-eccentric scotch yoke mechanism coupled to the motor, the scotch yoke mechanism including
• a spindle driven to reciprocate relative to the motor along a spindle axis parallel to the motor axis, the spindle including a rear end nearest to the motor,
• a counterweight driven to reciprocate relative to the motor and opposite to the spindle,
• a driveshaft including a first driveshaft portion and a second driveshaft portion configured to co-rotate about a driveshaft axis, the driveshaft receiving torque from the gear, the first driveshaft portion driving the counterweight to reciprocate relative to the motor,
• a pin coupled to one of the first driveshaft portion or the second driveshaft portion,
• a bore defined in the other of the first driveshaft portion or the second driveshaft portion, wherein the pin is received within the bore to couple the first driveshaft portion to the second driveshaft portion with a slip fit, wherein the bore and the pin are offset from the driveshaft axis, and
• a crankshaft coupled to the driveshaft;
• wherein the spindle, with the reciprocating saw in a horizontal orientation, is arranged above the motor such that, as the spindle reciprocates forward and backward for each drive cycle, the rear end extends into a space defined between the first and second vertical planes during at least a portion of the drive cycle;
• and
• wherein the first driveshaft portion and the second driveshaft portion are configured to transmit torque from the motor to the crankshaft to impart the reciprocating movement to the spindle.