Just a quickie, does anyone know if it is possible to buy a compact chainset to fit a mid 80's steel race bike? I have a Chas Roberts with Campagnolo Super Record chainset 53/42. Years ago, i could get up hills with this but now I'm struggling and a lot heavier than I was 28 years ago. I have already increased the freewheel lowest gear from 21 to 28 teeth but my lowest gear would be too tall to get me up the toughest hills locally. The bb is square taper and freewheel is 6 speed. Thanks.