Colin Stanley wrote:I managed to find a plastic band-on clamp (2 off) in Halfords a number of years ago for my 531 steel frame. They work surprisingly well. Might have been Zefal.
I understand that there is some sort of hank stud that can be swaged into a plain drilled hole with an appropriate tool Like a pop rivet thingy. Again for a steel frame, and possibly an aluminium alloy one. A good LBS should know?
... have a look on my www.beewee.org.uk site and the Briefings section - there's a bit about "rivnuts" in the odd tips pages which will make bosses for a cage.
The alternative which works and is non-invasive is to fix the cage to the tube with heavy duty cable ties (placing a bit of old inner tube between the plate on the cage and the tube to stop it moving about and to protect the paint.
Rob