Torsion spring adjuster

A rolling shutter system, comprising:

• a torsion spring assembly;
• a support plate having a first flange with a hole, the support plate having a first central axis and the first flange being substantially parallel with said first central axis, a central axis of the hole being perpendicular to the central axis of the flange, and a cylindrical axle coaxial with the central axis of the support plate and projecting from the support plate;
• a wheel rotatably mounted on the support plate, the wheel being unattached to the torsion spring assembly, the wheel having:
• a first end with a cylindrical recess for receiving the cylindrical axle for some but not all of the depth of the wheel;
• a second end with a drive recess coaxial with the cylindrical recess, the drive recess having a non-circular shape configured to mate with a non-circular end of the torsion spring assembly, such that rotation of the wheel causes the drive recess to directly apply pressure to the non-circular end of the torsion spring assembly to rotate the torsion spring assembly;
• a first set of recesses having openings disposed around a circumference of the wheel, the first set of recesses being a first lateral distance from the first end of the wheel, each of the first set of recesses having a central axis that is parallel with a radial axis of the wheel;
• a second set of recesses having openings disposed around the circumference of the wheel, the second set of recesses being a second lateral distance from the first end of the wheel and located between the first set of recesses and the second end of the wheel;
• a reel tube with a hollow interior;
• a plurality of interconnected slats collectively forming a curtain with one end coupled to the reel tube;
• the torsion spring assembly at least partially inserted into the hollow interior of the reel tube, and having a first end mounted in the drive recess of the wheel;
• wherein the first lateral distance aligns the first set of recesses with the hole of the support plate;
• and
• wherein the second lateral distance aligns the second set of recesses past the support plate.