I am getting to the point on the Leader Project where it will soon be time to start assembly. One of the items on my to get list is a new speedo cable. I looked on Dragonfly Spares and they list cables for either a Magnetic or Chromatic Speedo. I do not have a clue which one i need so I am looking for some advice please.
Here is a photo of the existing speedo
1951 D1 BSA Bantam
1962 Ariel Arrow
1965 Ariel Leader
2013 Lexmoto Arrow