I own one and I do not believe SPENCE actually made them, I think
they were made by someone else(a person I met riding on the NO.CALIF
coast in 1976)
Was used with TA cranks with ultra small gears, it consists of a
RECORD body with a CYCLO idler on one end and a SIMPLEX TOURIST 303
pully on the other
and used a very nice chromed arm to connect it all(looked for the
donut but its not there)
Gearing on this bike as I remember was a 13-26 cluster and a
53-45-28t frt
bike had CINELLI HUBS which I think went to the recyclers with the
CONSTRICTOR rims long ago(DUUUUHHHHHHH)
BOB FREITAS
MILL VALLEY,CA