a/ 1 ball bearing car for the headboard, ref. FT 07 or FT 10 or FT 20 or FT 30 or FT 40.
b/ x 1,70 M. long track sections, ref. FR 07 or FR 25 or FR 40, + 2 end stops.
c/ 1 ball bearing car for each batten, ref. FL 07 or FL 10 or FL 20 or FL 30 or FL 40.
d/ Get information about the intermediate cars, ref. Fi 07 or Fi 10 or Fi 20 or Fi 30 or Fi 40.
(Ask your sailmaker but usually it is one more than the number of the batten cars).