petermc61 wrote: ↑
Sun Jan 13, 2019 8:56 am
Nylon strings tend to go sharp with playing but there is no real reason as far as I can see why your G should be less stable than the nylon b and e.
I have observed this for all traditional sets I tried, with the exception of Aranjuez Suave. Trebles go sharp after starting to play and the G is the worst. I understand some of the cause is the actual bending of the string. Consider the string as a plastic stick, which you flex. There is a natural resistance of the stick against bending - it likes to stay straight. The process of bending is not totally elastic but some of the energy required to bend the string goes into heat and the string warms up, which makes nylon contract. The G is the thickest, hence there is more resistance against bending and cooling is poorest.
To my surprise on my current Suave A800 set, the B is the worst. The G definitely doesn’t go sharp as much after a round of Arpeggios and Scales. I assume, while looking similar the Suave G is constructed differently from the other trebles.
Carbon strings (e.g. Savarez Alliance) go up very little (thinker=better cooling and different construction) which drives me totally nuts when using a Carbon G in a nylon set, e.g. Savarez Creation 510 MR. B and 1E go sharp, G string stays in tune. Give me a nylon G and let them all go sharp.