Today I did my second ride (55Mi.) on my 1975 Colnago Super. My first ride was shorter and I thought the ride was harsh. This time I backed out the dropout adjusters to gain a little more wheelbase and went for a longer ride. Sure enough it was harsher than any other steel bike I have ridden ( Basso, Masi, Cinelli and others). When I got back I measured the angles and got readings of 74 for the seat tube and 73 for the head tube. Does this sound like the correct angles for a 55cm frame and would the 74 degree seat tube account for the harsh ride? I think my other bikes have 73 degree seat angles.
Norm Lafleur
Ashfield, Ma.