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
Backstreet Boys: Larger Than Life McLean confirmed the deal, telling "Us Weekly" that the residency would begin in January 2017. On September 23, the Backstreet Boys confirmed their Vegas residency happening in 2017 titled Backstreet Boys: Larger Than Life. According to KVVU-TV's report, "Backstreet Boys: Larger Than Life" is the fastest-selling residency in Las Vegas in history. It is also the first time that Planet Hollywood has opened up balcony seats for headliner, making the theater 2000 seats bigger than fellow headliner Jennifer Lopez and Britney Spears. Its first round with 9 shows had grossed total revenue of $5,399,176 with 4,667 average audiences per show,