Duty cycle....

Duty cycle = Heavy Duty,...er...Durable,...Stronger than you can break...

Used in a sentence: : "Look at that,That there is Duty Cycle,... You can hammer on that fer hours, an you just ain't gonna hurt it,...at all".

Has been used to describe Battleship parts, Tractors, Mack Trucks, Some Women I use ta know, and the occasional electrical component...

but not anything by Lucas,...or Fiat...