I recently picked up a 1986(?) Centurion Ironman Master all original in what appears to be in excellent condition for $140. After numerous injures from long distance running i felt it was time to seriously explore road biking. I live in a hilly region and the bike has the original shimano 600 SIS. It appears to be a 6 speed 24T cassette/freewheel. (ouch) . I was told that i could easily replace the cassette/freewheel with a new 6 speed 28T and that it would make a huge difference in the gearing (allowing me to better handle the hills) like this one:
I have three questions:
1. Is this possible considering the design of the original hub design?
2. Will it really make a noticeable difference?
3. Any other ideas, without making major adjustments or replacements?
thank you so much...i am new to this world but consider myself very handy