What is the difference in a straight gauge spoke and a double butted spoke?
A straight gauge spoke is one diameter all the way down the spoke. A double butted spoke changes diameter twice. Usually a double butted spoke will start out at the head of the spoke as 14g, change about 20mm down to 15g and change back to 14g about 20mm before the threads. Basically it is 14g on the ends and 15g through the center.