Brake cable construction secrets



"Bicycle Brake Cord -- As I have been for a long time in the habit of
covering catgut with No. 25 copper wire for several bicycle firms, I
presume they find this to answer best for the purpose. The gut is
first twisted very tight and while in that condition wrapped round
with the wire, so that it has the double effect of strengthening the
gut and preventing it from wearing out. I remember thinking they were
violincello strings, and marvelled where such a lot of those
instruments went to. -- W.H. Davies"

"English Mechanic," 1878
http://books.google.com/books?id=UnkAAAAAMAAJ&printsec=titlepage#PPA351,M1

Cheers,

Carl Fogel