Springs on the spool for tension and a spring so it can be backed off

Rigid frame constant force spring powered 'bow' (concept I mocked up in CAD will it work? :-)) : r/Archery

Tension Spring Failure The Spring Store - Over 70 Trillion Custom & Stock springs

Constant Force Springs - Learn About

Anthony Joseph Pagley Jr. Bamboo Fly Rods: New Year Update

Torsion Springs vs. Extension Springs

Prime-Line 2-1/4 inch L x 3/4 inch D Extension Spring 2

Whip Finish Tutorial - w/ tools and by hand Fly fishing rods, Fly tying patterns, Lure making

All DURA-LIFT torsion springs are manufactured from Class 2 high-tensile, oil-tempered spring wire, meeting ASTM A229. All of our torsion spring wire is coated for improved corrosion resistance and easier handling. Both 10,000 standard cycle and 25,000 high-cycle springs are available in left or right wind, and in precut or longer lengths. Both the winding and stationary cones are professionally installed for safe operation.

Dura-lift .207 x 1.75 x 23 Torsion Garage Springs (Yellow, Left & Right Wound)

Replace Spare Spring Loop Hook Tension Spring Wire Diameter 0.3mm Outer Diameter 3mm Pull Back Spring Pull Spring Tension Spring Point (Length : 70mm (5Pcs)) : Industrial & Scientific