Pressure angle 25 degrees. Earlier gears with pressure angle 14.5 were commonly used because the cosine is larger for a smaller angle, providing more power transmission and less pressure on the bearing; however, teeth with smaller pressure angles are weaker. To run gears together properly their pressure angles must be matched. The pressure angle is also the angle of the sides of the trapezoidal teeth on the corresponding rack. The force transmitted during the mating of gear teeth acts along the normal. This force has components along the pitch line and the other along the line perpendicular to the pitch line. The
Silk Degrees Silk Degrees Silk Degrees is the seventh album by Boz Scaggs, released on Columbia Records in 1976. The album peaked at No. 2 and spent 115 weeks on the "Billboard" 200. It has been certified five times platinum by the RIAA and remains Scaggs's best selling album. "Silk Degrees" spawned four singles. "It's Over", "Lowdown", and "Lido Shuffle" made the Top 40, while "What Can I Say" peaked at No. 42. The album was recorded at Davlen Sound Studios and Hollywood Sound Studios in Los Angeles. Among the accompanying musicians, David Paich, Jeff Porcaro, and David Hungate became members of