Or about 3%.
It's a fairly obvious fact that if there's a particular between frets stretch you can JUST, but only just, make on a 34" scale, then you will not be able to make that same stretch on a longer scale, even if the extra distance is small. So, if your playing style and choice of music is such that you're absolutely stretched to the very, very max a lot of the time, then increasing scale length would be a bad move. For most of us, that isn't the case so it probably won't make a great deal of difference. Simples.![]()
While the music I play does tend to involve a lot of same string up and down neck movement it's typically already farther than 4 frets causing me to need to jump positions or change the string I play on negating the issue of stretch anyway. My issues only tend to arise when I need to use my pinky and ring finger in succession often, my pinky tends to tire and not want to stretch as much at that point.