Originally Posted by
smurray
Please don't assume it's common sense just because you understand it. Most stems I've seen list angle has plus or minus a certain degree. I've never seen a stem listed this way.
The plus or minus degree is when it gets flipped. For example a 0 degree (also listed as a 90 degree) will be a straight stem. No matter which way you put it on, it will be the same. It will be a 90 degree angle from the steerer tube. Straight out.
Now a stem listed as 83/97 is a 7 degree stem. Depending how you flip it, it will either rise 7 degrees, or drop 7 degrees. The angle it will make with the steerer tube is 83/97.
Hope that helps.