I've got what I think are old Sugino cranks on my track bike.
They have an 'S' inside a crown logo near the BB bolt.
Some rough measurements seem to indicate 144mm BCD with
a 90mm distance between bolts (centre-centre).
They are a 5-bolt unit with "4S-11" or "49-11" and 165 (length)
stamped on their backs.
I'd like to know what model they are and what sort of chainrings
I can use on them?
Are they a particular model I can mention and get suggestions for
suitable rings? e.g. "Campy 144bcd will be fine" or "Shimano
suchandsuch will fit"
I want to buy some different sized rings from ebay but don't
want to get stuck with chainrings that don't fit.
thankya!
hippy