The Sonnax two-strut engagement, 10-strut design mechanical diode GMFD-MD-10S for Ford 32-tooth stator tube splines offers much greater strength than existing roller clutches and “dog bone” style sprags. This design offers greatly increased reliability, especially where high torque, vibration or high overrunning speeds decrease the effectiveness of wedging-type one-way clutches.

Positive engagement is achieved when the angled struts are automatically forced into a fully engaged position, eliminating torsional windup, minimizing engagement impact and prolonging component life. The design transfers force in a more direct fashion through planar strut arrangement and a shallow engagement angle, resulting in relatively small radial forces when compared to friction actuated one-way clutches. A similar diode, GMFD-MD-1, is a one-strut engagement, five-strut design.

• GM to Ford applications
• Two-strut engagement, 10-strut design
• Greater strength with weight and size reduction over friction-actuated one-way clutches
• Dramatic reduction in radial stress over friction-actuated one-way clutches
• No torsional windup
• Long overrun life