Join Date: Jan 2006
Location: San Juan Capistrano, California, USA
The speedo answer is to adapt the SS speedo drive to the wheel. IIRC it would take an offset engagement disc fabricated.
I have a set of Marchesini mag wheels that are designed for the SBK/later SS forks that I did the conversion measurements for several months ago. So I would either have to get SBK forks or have some machining done on the wheels. So far the answer has been made for me 'cause I'm working too many hours and trying to sort an electrical gremlin. Then I can get back on the wheel project.
To the OP, how are the forks working now for you?
1992 Ducati 900 SS, 2004 BMW R1100S, 1978 BMW R100RS, 1996 Ducati 955SP (sold in a moment of stupidity)