May 31, 2015 at 09:22 PM
Edgar,
I don't know if "blocked off" gears pass official muster. I'm sure the USA Cycling rulebook will tell.
My longer-term recommendation is to get a compact crank with smaller rings. According to a gear chart I just consulted, a 52x14 is 100.3 inches. It's hard to find a cassette with the tallest gear a 14, though there could be some around. Even a 13 is hard to come by these days. A 48x13 is 99.7". It's much easier to find a cassette with a 12. So a 44x12 is 99 inches.
An inch per revolution can be a big deal when you're barely hanging on. What's good about the 44x12 setup is you can easily run that with a compact and have a 34 as the small ring. The smaller the shift between small and big rings, the easier and faster shifting is, and the extra shifting you have to do is almost eliminated. And with a 25 in the back, as in a 12-25 cassette, you'll have plenty of low gears and lots of stops in between.
The nice thing about having a 14, 13, or even 12 cog as your max gear is you can put on a cassette during the week that gives you an 11 for the big gear, and then it's easier to keep up with old guys.
And the nice thing about the gear limit is you really learn how to spin.
Here's the chart I consulted. http://www.bikecult.com/works/wheelsizes.html Scroll to the bottom of the page.
I don't know if "blocked off" gears pass official muster. I'm sure the USA Cycling rulebook will tell.
My longer-term recommendation is to get a compact crank with smaller rings. According to a gear chart I just consulted, a 52x14 is 100.3 inches. It's hard to find a cassette with the tallest gear a 14, though there could be some around. Even a 13 is hard to come by these days. A 48x13 is 99.7". It's much easier to find a cassette with a 12. So a 44x12 is 99 inches.
An inch per revolution can be a big deal when you're barely hanging on. What's good about the 44x12 setup is you can easily run that with a compact and have a 34 as the small ring. The smaller the shift between small and big rings, the easier and faster shifting is, and the extra shifting you have to do is almost eliminated. And with a 25 in the back, as in a 12-25 cassette, you'll have plenty of low gears and lots of stops in between.
The nice thing about having a 14, 13, or even 12 cog as your max gear is you can put on a cassette during the week that gives you an 11 for the big gear, and then it's easier to keep up with old guys.
And the nice thing about the gear limit is you really learn how to spin.
Here's the chart I consulted. http://www.bikecult.com/works/wheelsizes.html Scroll to the bottom of the page.