Sandy
12-03-2011, 10:35 PM
Unfortunately I have not cycled for about 4 years and have decided that it is now or never as I will be 71 this month, and who ever knows how long one has left on this earth. My approach is as follows- ride my bike inside on the trainer during the cold months, gaining conditioning- cardiovascular/muscular/ improving my pathetic pedal stroke, and ride outdoors starting in the warmer months, with a goal of a SLOW metric century later in the year.
I have ridden my trainer 5 times thus far and have a problem. I have a 50/34 12/27 chainring/cassette 10 speed Dura-Ace Serotta. I tend to start pedaling at a very moderate cadence (usually in the big chain ring when outdoors) and then increase the cadence. My Cycle Ops trainer has 4 levels of difficulty. To get started in the winter, after such a long absence from cycling, I am using the easiest difficulty level, the 34 chainring and the lowest 4 gears, using the 27, 24, 21, and 19 cogs. The problem is that as I pedal at a low cadence in these gears there is a very substantial vibration (and accompanying noise) that I can feel throughout my bike- easily felt in the top tube and handlebars.
As my cadence increases the vibration tends to slowly decrease. The vibration is worse in the lower gears. I sometimes also tend to hear a little click as I pedal, But I think that is probably unrelated and minor.
I use Conti GP 4000 700x25 tires that seem to have reasonable tread left, and I inflate them to around 120 each- significantly higher than the 95 f and 105 r I use outdoors.
Any ideas what the vibration could be? I appreciate any input that you could give me.
Thank you!!
Super Snail Slow Sandy
PS- I sincerely apologize to so many of you I have not maintained contact with over the last few years.
I have ridden my trainer 5 times thus far and have a problem. I have a 50/34 12/27 chainring/cassette 10 speed Dura-Ace Serotta. I tend to start pedaling at a very moderate cadence (usually in the big chain ring when outdoors) and then increase the cadence. My Cycle Ops trainer has 4 levels of difficulty. To get started in the winter, after such a long absence from cycling, I am using the easiest difficulty level, the 34 chainring and the lowest 4 gears, using the 27, 24, 21, and 19 cogs. The problem is that as I pedal at a low cadence in these gears there is a very substantial vibration (and accompanying noise) that I can feel throughout my bike- easily felt in the top tube and handlebars.
As my cadence increases the vibration tends to slowly decrease. The vibration is worse in the lower gears. I sometimes also tend to hear a little click as I pedal, But I think that is probably unrelated and minor.
I use Conti GP 4000 700x25 tires that seem to have reasonable tread left, and I inflate them to around 120 each- significantly higher than the 95 f and 105 r I use outdoors.
Any ideas what the vibration could be? I appreciate any input that you could give me.
Thank you!!
Super Snail Slow Sandy
PS- I sincerely apologize to so many of you I have not maintained contact with over the last few years.