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changing chainrings

Old 11-29-21, 01:13 AM
  #26  
urbanknight
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Originally Posted by Badger6 View Post
So, this talk about 140rpm at the cranks is ridiculous. Sure, some riders will do it for short periods of time (sprinting, or just because, I guess), but most of us (pros included) are spinning between 80-100 for most of any ride. So, to Larry's implications that "50x11 at 140 rpm is like 50 mph" is just a distraction. If we are going to do real talk about gearing and rpms, lets bound it by the "normal" ranges that we are riding in...which 140 is clearly outside of.
That's fine, as long as we talk about the "normal" speeds as well. Even at 100 rpm, a 50x11 is about 37 mph, faster than most of us (pros included) sustain on the flats. I think that's why these topics get such strong responses like those from LarrySellerz , because anyone who says they're spinning out on that gear on the flats is either fooling with us, or has horribly improper form and could use some help.
FWIW here is Hirschi spinning around 120 rpm (for short periods of time). He's not asking for a bigger chainring.
And here's a good clip explaining why pros don't bother pedaling much at that point anyway.

But I digress, if someone wants to pedal 60 rpm on the flats, let them throw a 53 on. As long as they have healthy joints and aren't trying to win a race, it should be fine.
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Old 11-29-21, 07:57 AM
  #27  
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Originally Posted by urbanknight View Post
That's fine, as long as we talk about the "normal" speeds as well. Even at 100 rpm, a 50x11 is about 37 mph, faster than most of us (pros included) sustain on the flats. I think that's why these topics get such strong responses like those from LarrySellerz , because anyone who says they're spinning out on that gear on the flats is either fooling with us, or has horribly improper form and could use some help.
FWIW here is Hirschi spinning around 120 rpm (for short periods of time). He's not asking for a bigger chainring. https://youtu.be/Uot32nsQNn0
And here's a good clip explaining why pros don't bother pedaling much at that point anyway. https://youtu.be/zojjIghKQoM

But I digress, if someone wants to pedal 60 rpm on the flats, let them throw a 53 on. As long as they have healthy joints and aren't trying to win a race, it should be fine.
There's always more to it than that. I generate a lot of heat during physical activities. The lower cadence/bigger gear will produce less heat buildup than the higher cadence/smaller gear.(at least for me) I took a bike to the HotterNHell 100 earlier this year with high gears specifically for that reason. Averaged 69rpm for the ride. Still got too hot and abandoned with 3 miles left. Trying to spin along through that heat/wind at a higher cadence would have put me out a lot sooner.
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Old 11-29-21, 08:27 AM
  #28  
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Originally Posted by seypat View Post
There's always more to it than that. I generate a lot of heat during physical activities. The lower cadence/bigger gear will produce less heat buildup than the higher cadence/smaller gear.(at least for me) I took a bike to the HotterNHell 100 earlier this year with high gears specifically for that reason. Averaged 69rpm for the ride. Still got too hot and abandoned with 3 miles left. Trying to spin along through that heat/wind at a higher cadence would have put me out a lot sooner.
That’s fine and valid, and you’re not the one on here claiming to “spin out” on the flats in that 50x11.
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Old 11-29-21, 11:57 PM
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Originally Posted by urbanknight View Post
That’s fine and valid, and you’re not the one on here claiming to “spin out” on the flats in that 50x11.
Neither am I. Though I can definitely do it if you give me a -5% grade longer than 1000m.
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Old 11-30-21, 12:29 AM
  #30  
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Originally Posted by urbanknight View Post
That's fine, as long as we talk about the "normal" speeds as well. Even at 100 rpm, a 50x11 is about 37 mph, faster than most of us (pros included) sustain on the flats. I think that's why these topics get such strong responses like those from LarrySellerz , because anyone who says they're spinning out on that gear on the flats is either fooling with us, or has horribly improper form and could use some help.
FWIW here is Hirschi spinning around 120 rpm (for short periods of time). He's not asking for a bigger chainring. https://youtu.be/Uot32nsQNn0
And here's a good clip explaining why pros don't bother pedaling much at that point anyway. https://youtu.be/zojjIghKQoM

But I digress, if someone wants to pedal 60 rpm on the flats, let them throw a 53 on. As long as they have healthy joints and aren't trying to win a race, it should be fine.
my friend is like this lol, she is relatively new to cycling but stays in her highest gear unless she can't get up the hill in it. I think it funny af. Cruising through town af 50 rpm hahaha she's sweet.

Last edited by LarrySellerz; 11-30-21 at 11:15 AM.
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Old 11-30-21, 01:17 AM
  #31  
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Originally Posted by Badger6 View Post
Neither am I. Though I can definitely do it if you give me a -5% grade longer than 1000m.
Agreed, but a few of the earlier posters implied it, hence LarrySellerz's comments.
And yes, I can understand anyone with a speed addiction wanting whatever gear they can push to find that limit. It just doesn't sound like that's the case for the OP.
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