pitch raise question

[Farrell]

FWIW, a while back, just for fun, while destringing a 100+ year old grand 
with original strings, we turned a bunch of them up in pitch and measured 
with an Accutuner to see how far we could pull them sharp before breaking. 
None broke a less than a full half-step, most made it past a full step, and 
most broke between a full step and 1.5 steps sharp.

Unless the string has really lost all it's elasticity or is rusty or 
somesuch, you won't break too many strings pulling them 30 or 40 cents 
sharp. But much beyond that I wonder if one doesn't run the risk of some 
sort of permanent disfiguring of the string.

Terry Farrell

----- Original Message ----- 
From: "Karl kaputt"
SNIP
> Overpulling by 30 cents in the middle and 36 cent in the trebble seems a 
> little bit to much. I am afraid of cracking strings.
>
> Gregor