I know that Armstrong has produced an RS alternative (I bought it - twice!), but does it work in RW? Or can it be made to work? The Armstrong site content suggests it can't? My technical knowledge just aint enough.
If anyone knows how this can be done I'd love to hear from them. Or how to copy over the rather better horns from the 37, 47 or Pendolino.
How did the default HST horn ever get released?!