What uses more energy, climb up a hill fast or climb slow??
07-18-22, 03:49 PM
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Makes no difference to me which riding style uses more or less energy..
07-18-22, 04:57 PM
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07-18-22, 05:33 PM
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07-18-22, 05:55 PM
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Can you keep 14 mph or better going up the hill? If not, you are going to get hotter on a hot day. So you might need to pedal one of the easier gears you have. But if you know you can bust a gut getting to the top without risking heat exhaustion then go for it so you can get some cooling going down the other side.
Your hill might not be my hill.
Your hill might not be my hill.
When doing indoor session, I can hold HR of 160 to 180 for over an hour pedaling seated and OOS. If I do my training pace and sufficiently warmed up at a nearby but much shorter 5% climb, I'd be doing 10 to 14 mph using 34 / 20t to 13t cog.
My indoor training environment is much more bearable. It can feel 85F on a 100F day with excellent ventilation, natural wind blowing across the room, strong fan, and keeping my shirt wet. Cooling is probably a strong factor.
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07-18-22, 06:18 PM
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07-18-22, 06:20 PM
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07-18-22, 06:39 PM
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It's around 3 hrs of climbing ~5% gradient, doing it at a lazy 6 mph. Heart rate at 120 to 130 bpm spinning away with 34 / 40 gear at 80 to 90 rpm cadence seated.
When doing indoor session, I can hold HR of 160 to 180 for over an hour pedaling seated and OOS. If I do my training pace and sufficiently warmed up at a nearby but much shorter 5% climb, I'd be doing 10 to 14 mph using 34 / 20t to 13t cog.
When doing indoor session, I can hold HR of 160 to 180 for over an hour pedaling seated and OOS. If I do my training pace and sufficiently warmed up at a nearby but much shorter 5% climb, I'd be doing 10 to 14 mph using 34 / 20t to 13t cog.
Lazy: 6 mph up a 5% grade -- roughly 1.7 Watts/kg
Training (1-hour) page: 14 mph up a 5% grade -- roughly 4.5 Watts/kg
"Lazy" is a pretty lazy pace.
If koala logs can maintain 14 mph up a 5% grade, at their 1-hour training pace, that's pretty effin' elite.
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07-18-22, 07:08 PM
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If koala logs can maintain 14 mph up a 5% grade, at their 1-hour training pace, that's pretty effin' elite.
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07-18-22, 07:31 PM
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I'll be a good little fishy and bite.
Lazy: 6 mph up a 5% grade -- roughly 1.7 Watts/kg
Training (1-hour) page: 14 mph up a 5% grade -- roughly 4.5 Watts/kg
"Lazy" is a pretty lazy pace.
If koala logs can maintain 14 mph up a 5% grade, at their 1-hour training pace, that's pretty effin' elite.
Lazy: 6 mph up a 5% grade -- roughly 1.7 Watts/kg
Training (1-hour) page: 14 mph up a 5% grade -- roughly 4.5 Watts/kg
"Lazy" is a pretty lazy pace.
If koala logs can maintain 14 mph up a 5% grade, at their 1-hour training pace, that's pretty effin' elite.
With the cadences he's spinning, he could pick up another 100 watts(at least) with ceramic bearings and pulleys. Add one of those new RD fairings and he'd be unstoppable. Or not.
07-18-22, 07:40 PM
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07-18-22, 07:40 PM
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Light guys have some advantage, but they (we) tend to have smaller engines. Watts per kilogram is basically fixed for a given climb and speed.
[QUOTE=seypat;22579206]With the cadences he's spinning, he could pick up another 100 watts(at least) with ceramic bearings and pulleys. Add one of those new RD fairings and he'd be unstoppable. Or not.
Never in a million years would ceramic bearings and pulleys save 100 watts.
[QUOTE=seypat;22579206]With the cadences he's spinning, he could pick up another 100 watts(at least) with ceramic bearings and pulleys. Add one of those new RD fairings and he'd be unstoppable. Or not.
Never in a million years would ceramic bearings and pulleys save 100 watts.
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07-18-22, 07:57 PM
#38
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Not quite. Climbing faster will result in more aerodynamic drag, so it'll take more energy. Of course, that's down in the near negligible range for most climbers.
Of course, you could make the counter argument that riding slower and sweating a lot will result in lower mass being lifted toward the end. But somebody's gonna have to buy me a beer before I waste any more time on this navel-gazing exercise.
Of course, you could make the counter argument that riding slower and sweating a lot will result in lower mass being lifted toward the end. But somebody's gonna have to buy me a beer before I waste any more time on this navel-gazing exercise.
07-18-22, 07:57 PM
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[QUOTE=terrymorse;22579219]Light guys have some advantage, but they (we) tend to have smaller engines. Watts per kilogram is basically fixed for a given climb and speed.
I suspect he was being Captain Hyperbole.
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07-18-22, 08:05 PM
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I only weigh 125 lbs so the combined weight is only159 lbs, pretty light. Besides, at 10 to 14 mph, you hardly feel the wind. It won't matter if you're aero or not.
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07-18-22, 08:28 PM
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I calculated the watts you'd need for 12 mph. It's 250w. If you have a 10 mph tailwind, that power will get you 14.3 mph, so aerodynamics are not unimportant even at that speed.
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07-18-22, 08:43 PM
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Your bike weighs 34 lbs? That's a pretty significant part of your bike/rider system.
07-18-22, 08:44 PM
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I'll be a good little fishy and bite.
Lazy: 6 mph up a 5% grade -- roughly 1.7 Watts/kg
Training (1-hour) page: 14 mph up a 5% grade -- roughly 4.5 Watts/kg
"Lazy" is a pretty lazy pace.
If koala logs can maintain 14 mph up a 5% grade, at their 1-hour training pace, that's pretty effin' elite.
Lazy: 6 mph up a 5% grade -- roughly 1.7 Watts/kg
Training (1-hour) page: 14 mph up a 5% grade -- roughly 4.5 Watts/kg
"Lazy" is a pretty lazy pace.
If koala logs can maintain 14 mph up a 5% grade, at their 1-hour training pace, that's pretty effin' elite.
This is why I made this thread about "energy" because it concerns me about fueling.
Indoor training has no problem with fueling. I can make quick runs to the fridge for fuel and cold drinks during one of the easy interval sessions.
It seems you also pay for being lazy with sore butt and sore neck because you're making the rides longer. I'll be training harder as well if that helps avoid fatigue even better in less ideal riding conditions.
Last edited by koala logs; 07-18-22 at 09:13 PM.
07-18-22, 08:49 PM
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07-18-22, 08:59 PM
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07-18-22, 09:05 PM
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07-18-22, 09:08 PM
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climbing fast will be more efficient,if you consider power loss during the pedalling,twisting and turning during the process,the aero loss is neglectible because climbing speed is less than 40k/h.
07-19-22, 03:05 AM
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07-19-22, 05:01 AM
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I tend to eat quite liberally when riding. Not a problem with indoor training, I can eat all I want. On long rides, I have to ration my supplies. I tend to ride without stopping, except to pee but only once and hurry back to the road without any delay.
07-19-22, 05:16 AM
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