Originally Posted by jnbrown
Does solder adhere to stainless steel?
It takes an acid flux and the right kind of silver solder, which is why I throw in the easier solution: use a little SuperGlue. It helps to dip the cable end in alcohol and/or muratic acid, rinse, dry and then apply. Note, I DON'T go to the trouble to do this anymore, I just use crimp-on ends. But, if someone was determined to not carry a cable cutter and ends with their space derailleur cable...
Frankly, I change my derailleur cables about every other year now on the tandem that we ride all the time (used to be annually, but the cables have gotten better
) so I don't have to worry about broken cables, noting they tend to break inside the shifter which ain't a good thing. Brake cables go when I just decide its time to replace the housings which varies.
The stainless steel and teflon coated cables simply don't become prone to failure that way the older steel cables did.
Again, if I was going on a trip with the travel tandem by air I "might" carry and extra pair of brake / derailleur cables, but they'd be single bike cables which is why the splitters that are used on travel tandems are equally nice to use on regular tandems: no need for special tandem length cables.