What Frame Size?

[kayaker]

I currently ride a small giant tcx3 http://www.giant-bicycles.com/en-gb/bikes/model/tcx.3/9328/49857/
as a project I would like to obtain an old road bike how do i ascertain what the equivalent sized older frame i would suit.

Chris

 

[4F]

I currently ride a small giant tcx3 http://www.giant-bicycles.com/en-gb/bikes/model/tcx.3/9328/49857/
as a project I would like to obtain an old road bike how do i ascertain what the equivalent sized older frame i would suit.

Chris

I would suggest "small". However seriously though it depends on height, inside leg, reach. see here http://sheldonbrown.com/frame-sizing.html