I have a 1970s vintage 27" Nishiki Sport
I want to equip it for my style of riding, which is road (occasionally smooth, more often damaged asphalt), sidewalk (concrete) and packed gravel (encountered on a 40 mile ride).
Here is what I think, after some exploring and reading and shopping:
1. Change the tires. I would like to change to tubeless road/gravel. This seems difficult to find for the 27".
2. Change the brake system from caliper to disk. Like the tires, finding the wheels has been a challenge.
3. Change the cassette to 10, 11, or 12. Once again, the wheels have been the issue. The most I have found is 8.
If I switch to disk, will this allow me to play with the size, like maybe going for the 700cc? Would even a downsize to 26" be possible?
I am 62. I have been out of the buying game for a lot of years. I am only now seeing the sticker shock of new quality rigs. 5-figures!?! I got back on to daily riding in 2009 or so. Then one winter I put it away for the winter and never pulled it out again. I almost gave it away. Instead, I gave away a Nishiki MTB. I did this, because I did some quick research and realized that the MTB was going to be an issue for my type of riding. I am planning to get in shape for a century ride by this time next year. I did a 40-mile ride. I was starting then to get in shape for a century ride with the local Major Taylor chapter. But then came the hiatus.
So, I wait with my pencil and pad to take notes on brands, options, tools, etc.
During my teenage years, I rode everywhere. I was not even interested in a car, because I had my steed. I even harbored aspirations of trying out for the Olympics. Oh well....
I await your input.