Helix angle the helix angle. The efficiency can be plotted versus the helix angle for a constant friction, as shown in the adjacent diagram. The maximum efficiency is a helix angle between 40 and 45 degrees, however a reasonable efficiency is achieved above 15°. Due to difficulties in forming the thread, helix angle greater than 30° are rarely used. Moreover, above 30° the friction angle becomes smaller than the helix angle and the nut is no longer self-locking and the mechanical advantage disappears. In helical and worm gears, the helix angle denotes the standard pitch circle unless otherwise specified. Application of the
98 Degrees and Rising 98 Degrees and Rising 98 Degrees and Rising is the second album released by American boy band 98 Degrees. It was recorded at Blue Wave Studios in Vancouver, British Columbia, Canada and released by Motown on October 20, 1998. The album features the singles "Because of You" and "The Hardest Thing", which peaked at No. 3 and No. 5 on the "Billboard" Hot 100 respectively. The album also features two covers, Mark Wills' "I Do (Cherish You)" and "She's Out of My Life", made famous by Michael Jackson. It also features a duet with label mate Stevie Wonder, "True to