Yarn was tested on Lawson-Hemphill's CTT, which was set up with a friction element to provide a value of the force required to break the yarn with or without a frictional load. Because of the drag induced on a yarn as it touches machine components in processing or testing, a yarn will break at a lower tension. The drop in strength for these samples due to the insertion of a friction element varied from 38% to 55%. Yarn strength testing with the addition of speed and friction is more adaptive to what the yarn performance will be in a manufacturing environment. Certain yarns with a high single end break number and a high coefficient of friction will break in knitting or weaving before some yarns having a lower single end strength number but a lower coefficient of friction.