I tried advertising for a Ferret Speedo cable and had no replies.

I used a hand brake cable for mine which had the flexible outer metal sleeve.

The diameter was very slightly smaller than that stated in the manual but I don't expect any problems. The Green Spark Plug Company who had the spare parts kits at one time also had the correct flexible pipe on a role but all now unfortunately gone.

Neil I can't make Stoneleigh this year! Maybe you can buy up all the Ferret cables, chop them into 3' lengths, sell them around the world, make a fortune and retire young. :) Just save one for me. :thup2: Ron