Relationship between speed and cadence?Speed and Cadence Bike Sensor OpinionsWhy does reducing bike weight have such an impact on speeds?What is the relationship between tyre pressure and weight?How does weight and strength of a person effects the riding of bicycle at higher speeds?Why is a steady cadence so important? Or is it?What cadence saves power when climbing?How does weight influence your speed when descending?Estimating trainer 'effort above the flat' by heart rate + cadenceUnderstanding science of speed difference between two bikes
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Relationship between speed and cadence?
Speed and Cadence Bike Sensor OpinionsWhy does reducing bike weight have such an impact on speeds?What is the relationship between tyre pressure and weight?How does weight and strength of a person effects the riding of bicycle at higher speeds?Why is a steady cadence so important? Or is it?What cadence saves power when climbing?How does weight influence your speed when descending?Estimating trainer 'effort above the flat' by heart rate + cadenceUnderstanding science of speed difference between two bikes
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I am having a disagreement with a friend. It stems around the scenario of 2 identical bikes on the same gear ratio side by side. If the rate of pedaling is same for both do both bikes travel at the same speed? Or does the rider's weight play a factor?
speed cadence
New contributor
add a comment |
I am having a disagreement with a friend. It stems around the scenario of 2 identical bikes on the same gear ratio side by side. If the rate of pedaling is same for both do both bikes travel at the same speed? Or does the rider's weight play a factor?
speed cadence
New contributor
3
The only variable in this scenario is the effective rear wheel diameter, determined by air pressure and weight on the rear wheel. Theoretically if tires and pressure are identical, there will be a difference and a heavier rider will travel less distance. Practically, good luck measuring it.
– mattnz
7 hours ago
1
@mattnz - Yep, there will be an effect, but it will be minuscule in most circumstances.
– Daniel R Hicks
7 hours ago
add a comment |
I am having a disagreement with a friend. It stems around the scenario of 2 identical bikes on the same gear ratio side by side. If the rate of pedaling is same for both do both bikes travel at the same speed? Or does the rider's weight play a factor?
speed cadence
New contributor
I am having a disagreement with a friend. It stems around the scenario of 2 identical bikes on the same gear ratio side by side. If the rate of pedaling is same for both do both bikes travel at the same speed? Or does the rider's weight play a factor?
speed cadence
speed cadence
New contributor
New contributor
edited 6 hours ago
RoboKaren
23.9k9 gold badges67 silver badges146 bronze badges
23.9k9 gold badges67 silver badges146 bronze badges
New contributor
asked 8 hours ago
FrankFrank
61 bronze badge
61 bronze badge
New contributor
New contributor
3
The only variable in this scenario is the effective rear wheel diameter, determined by air pressure and weight on the rear wheel. Theoretically if tires and pressure are identical, there will be a difference and a heavier rider will travel less distance. Practically, good luck measuring it.
– mattnz
7 hours ago
1
@mattnz - Yep, there will be an effect, but it will be minuscule in most circumstances.
– Daniel R Hicks
7 hours ago
add a comment |
3
The only variable in this scenario is the effective rear wheel diameter, determined by air pressure and weight on the rear wheel. Theoretically if tires and pressure are identical, there will be a difference and a heavier rider will travel less distance. Practically, good luck measuring it.
– mattnz
7 hours ago
1
@mattnz - Yep, there will be an effect, but it will be minuscule in most circumstances.
– Daniel R Hicks
7 hours ago
3
3
The only variable in this scenario is the effective rear wheel diameter, determined by air pressure and weight on the rear wheel. Theoretically if tires and pressure are identical, there will be a difference and a heavier rider will travel less distance. Practically, good luck measuring it.
– mattnz
7 hours ago
The only variable in this scenario is the effective rear wheel diameter, determined by air pressure and weight on the rear wheel. Theoretically if tires and pressure are identical, there will be a difference and a heavier rider will travel less distance. Practically, good luck measuring it.
– mattnz
7 hours ago
1
1
@mattnz - Yep, there will be an effect, but it will be minuscule in most circumstances.
– Daniel R Hicks
7 hours ago
@mattnz - Yep, there will be an effect, but it will be minuscule in most circumstances.
– Daniel R Hicks
7 hours ago
add a comment |
4 Answers
4
active
oldest
votes
The mechanical factors which translate pedaling rate to overall speed are:
- Gear ratio
- Size of wheels
The weight of the rider is not relevant for this question.
The weight of the rider would be relevant if you were asking about the power needed to keep the bike going, especially up any kind of hill.
On a non inclined surface rider and bike mass has no beRing on the power needed to maintain a constant speed (ok, perhaps greater mass causes greater bearing friction, tire deformation losses, but those are small).
– Argenti Apparatus
7 hours ago
@ArgentiApparatus surface area is (generally) proportional to mass, so you'd (generally) expect different drag at the same speed (but you also wouldn't be surprised if two riders of the same mass had different drag)
– Paul H
7 hours ago
@PaulH Yes of course a heavier rider will be bigger and present a larger area.
– Argenti Apparatus
7 hours ago
add a comment |
Speed is determined only by gearing, of which crank, cassette, wheel, and tire are components
Any 2 bikes using, say, 42t cranks with a rear 32t cog and 25c tires on 700c wheels at 90rpm will be going the same speed. Bike type and size, rider/bike weight, and even front wheel/tire size and crank length don’t matter. These other factors only effect how much power it will take to keep up that cadence with that gear combination.
New contributor
add a comment |
There would likely be a small difference. If you have, eg, a bike with a rear tire that has a 68cm diameter, the effective tire diameter is reduced by the amount it compresses when the bike is carrying a rider.
Let's say that the heavier rider is heaver by 80kg, and this causes the tire to compress an additional 1cm vs the diameter with the lighter rider. The effective radius is 33cm vs 34cm, and the effective circumference is 207.34cm vs 213.63cm.
So he heavier rider would travel about 207.34/213.63 or 0.97 kilometer for each kilometer the lighter rider travels.
(In practice the difference would likely be somewhat less due to the dynamics of the tire. The lateral stiffness of the tread would tent to make the heavier bike "scoot ahead" relative to the above numbers, perhaps halving the disadvantage. This would depend on the specific tire/tread/pressure.)
add a comment |
Unless the weight was of significant delta, it would be near on impossible to see one bike travel faster or slower.
There are also too many other factors to consider:
Rider position
Rider height (longer legs, etc)
Rider muscle composition (stronger legs)
Cadence
Bike maintenance
Road surface
etc
New contributor
add a comment |
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4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
The mechanical factors which translate pedaling rate to overall speed are:
- Gear ratio
- Size of wheels
The weight of the rider is not relevant for this question.
The weight of the rider would be relevant if you were asking about the power needed to keep the bike going, especially up any kind of hill.
On a non inclined surface rider and bike mass has no beRing on the power needed to maintain a constant speed (ok, perhaps greater mass causes greater bearing friction, tire deformation losses, but those are small).
– Argenti Apparatus
7 hours ago
@ArgentiApparatus surface area is (generally) proportional to mass, so you'd (generally) expect different drag at the same speed (but you also wouldn't be surprised if two riders of the same mass had different drag)
– Paul H
7 hours ago
@PaulH Yes of course a heavier rider will be bigger and present a larger area.
– Argenti Apparatus
7 hours ago
add a comment |
The mechanical factors which translate pedaling rate to overall speed are:
- Gear ratio
- Size of wheels
The weight of the rider is not relevant for this question.
The weight of the rider would be relevant if you were asking about the power needed to keep the bike going, especially up any kind of hill.
On a non inclined surface rider and bike mass has no beRing on the power needed to maintain a constant speed (ok, perhaps greater mass causes greater bearing friction, tire deformation losses, but those are small).
– Argenti Apparatus
7 hours ago
@ArgentiApparatus surface area is (generally) proportional to mass, so you'd (generally) expect different drag at the same speed (but you also wouldn't be surprised if two riders of the same mass had different drag)
– Paul H
7 hours ago
@PaulH Yes of course a heavier rider will be bigger and present a larger area.
– Argenti Apparatus
7 hours ago
add a comment |
The mechanical factors which translate pedaling rate to overall speed are:
- Gear ratio
- Size of wheels
The weight of the rider is not relevant for this question.
The weight of the rider would be relevant if you were asking about the power needed to keep the bike going, especially up any kind of hill.
The mechanical factors which translate pedaling rate to overall speed are:
- Gear ratio
- Size of wheels
The weight of the rider is not relevant for this question.
The weight of the rider would be relevant if you were asking about the power needed to keep the bike going, especially up any kind of hill.
answered 8 hours ago
Greg HewgillGreg Hewgill
4932 silver badges10 bronze badges
4932 silver badges10 bronze badges
On a non inclined surface rider and bike mass has no beRing on the power needed to maintain a constant speed (ok, perhaps greater mass causes greater bearing friction, tire deformation losses, but those are small).
– Argenti Apparatus
7 hours ago
@ArgentiApparatus surface area is (generally) proportional to mass, so you'd (generally) expect different drag at the same speed (but you also wouldn't be surprised if two riders of the same mass had different drag)
– Paul H
7 hours ago
@PaulH Yes of course a heavier rider will be bigger and present a larger area.
– Argenti Apparatus
7 hours ago
add a comment |
On a non inclined surface rider and bike mass has no beRing on the power needed to maintain a constant speed (ok, perhaps greater mass causes greater bearing friction, tire deformation losses, but those are small).
– Argenti Apparatus
7 hours ago
@ArgentiApparatus surface area is (generally) proportional to mass, so you'd (generally) expect different drag at the same speed (but you also wouldn't be surprised if two riders of the same mass had different drag)
– Paul H
7 hours ago
@PaulH Yes of course a heavier rider will be bigger and present a larger area.
– Argenti Apparatus
7 hours ago
On a non inclined surface rider and bike mass has no beRing on the power needed to maintain a constant speed (ok, perhaps greater mass causes greater bearing friction, tire deformation losses, but those are small).
– Argenti Apparatus
7 hours ago
On a non inclined surface rider and bike mass has no beRing on the power needed to maintain a constant speed (ok, perhaps greater mass causes greater bearing friction, tire deformation losses, but those are small).
– Argenti Apparatus
7 hours ago
@ArgentiApparatus surface area is (generally) proportional to mass, so you'd (generally) expect different drag at the same speed (but you also wouldn't be surprised if two riders of the same mass had different drag)
– Paul H
7 hours ago
@ArgentiApparatus surface area is (generally) proportional to mass, so you'd (generally) expect different drag at the same speed (but you also wouldn't be surprised if two riders of the same mass had different drag)
– Paul H
7 hours ago
@PaulH Yes of course a heavier rider will be bigger and present a larger area.
– Argenti Apparatus
7 hours ago
@PaulH Yes of course a heavier rider will be bigger and present a larger area.
– Argenti Apparatus
7 hours ago
add a comment |
Speed is determined only by gearing, of which crank, cassette, wheel, and tire are components
Any 2 bikes using, say, 42t cranks with a rear 32t cog and 25c tires on 700c wheels at 90rpm will be going the same speed. Bike type and size, rider/bike weight, and even front wheel/tire size and crank length don’t matter. These other factors only effect how much power it will take to keep up that cadence with that gear combination.
New contributor
add a comment |
Speed is determined only by gearing, of which crank, cassette, wheel, and tire are components
Any 2 bikes using, say, 42t cranks with a rear 32t cog and 25c tires on 700c wheels at 90rpm will be going the same speed. Bike type and size, rider/bike weight, and even front wheel/tire size and crank length don’t matter. These other factors only effect how much power it will take to keep up that cadence with that gear combination.
New contributor
add a comment |
Speed is determined only by gearing, of which crank, cassette, wheel, and tire are components
Any 2 bikes using, say, 42t cranks with a rear 32t cog and 25c tires on 700c wheels at 90rpm will be going the same speed. Bike type and size, rider/bike weight, and even front wheel/tire size and crank length don’t matter. These other factors only effect how much power it will take to keep up that cadence with that gear combination.
New contributor
Speed is determined only by gearing, of which crank, cassette, wheel, and tire are components
Any 2 bikes using, say, 42t cranks with a rear 32t cog and 25c tires on 700c wheels at 90rpm will be going the same speed. Bike type and size, rider/bike weight, and even front wheel/tire size and crank length don’t matter. These other factors only effect how much power it will take to keep up that cadence with that gear combination.
New contributor
New contributor
answered 8 hours ago
LastminutepanicLastminutepanic
212 bronze badges
212 bronze badges
New contributor
New contributor
add a comment |
add a comment |
There would likely be a small difference. If you have, eg, a bike with a rear tire that has a 68cm diameter, the effective tire diameter is reduced by the amount it compresses when the bike is carrying a rider.
Let's say that the heavier rider is heaver by 80kg, and this causes the tire to compress an additional 1cm vs the diameter with the lighter rider. The effective radius is 33cm vs 34cm, and the effective circumference is 207.34cm vs 213.63cm.
So he heavier rider would travel about 207.34/213.63 or 0.97 kilometer for each kilometer the lighter rider travels.
(In practice the difference would likely be somewhat less due to the dynamics of the tire. The lateral stiffness of the tread would tent to make the heavier bike "scoot ahead" relative to the above numbers, perhaps halving the disadvantage. This would depend on the specific tire/tread/pressure.)
add a comment |
There would likely be a small difference. If you have, eg, a bike with a rear tire that has a 68cm diameter, the effective tire diameter is reduced by the amount it compresses when the bike is carrying a rider.
Let's say that the heavier rider is heaver by 80kg, and this causes the tire to compress an additional 1cm vs the diameter with the lighter rider. The effective radius is 33cm vs 34cm, and the effective circumference is 207.34cm vs 213.63cm.
So he heavier rider would travel about 207.34/213.63 or 0.97 kilometer for each kilometer the lighter rider travels.
(In practice the difference would likely be somewhat less due to the dynamics of the tire. The lateral stiffness of the tread would tent to make the heavier bike "scoot ahead" relative to the above numbers, perhaps halving the disadvantage. This would depend on the specific tire/tread/pressure.)
add a comment |
There would likely be a small difference. If you have, eg, a bike with a rear tire that has a 68cm diameter, the effective tire diameter is reduced by the amount it compresses when the bike is carrying a rider.
Let's say that the heavier rider is heaver by 80kg, and this causes the tire to compress an additional 1cm vs the diameter with the lighter rider. The effective radius is 33cm vs 34cm, and the effective circumference is 207.34cm vs 213.63cm.
So he heavier rider would travel about 207.34/213.63 or 0.97 kilometer for each kilometer the lighter rider travels.
(In practice the difference would likely be somewhat less due to the dynamics of the tire. The lateral stiffness of the tread would tent to make the heavier bike "scoot ahead" relative to the above numbers, perhaps halving the disadvantage. This would depend on the specific tire/tread/pressure.)
There would likely be a small difference. If you have, eg, a bike with a rear tire that has a 68cm diameter, the effective tire diameter is reduced by the amount it compresses when the bike is carrying a rider.
Let's say that the heavier rider is heaver by 80kg, and this causes the tire to compress an additional 1cm vs the diameter with the lighter rider. The effective radius is 33cm vs 34cm, and the effective circumference is 207.34cm vs 213.63cm.
So he heavier rider would travel about 207.34/213.63 or 0.97 kilometer for each kilometer the lighter rider travels.
(In practice the difference would likely be somewhat less due to the dynamics of the tire. The lateral stiffness of the tread would tent to make the heavier bike "scoot ahead" relative to the above numbers, perhaps halving the disadvantage. This would depend on the specific tire/tread/pressure.)
answered 5 hours ago
Daniel R HicksDaniel R Hicks
46.7k2 gold badges58 silver badges161 bronze badges
46.7k2 gold badges58 silver badges161 bronze badges
add a comment |
add a comment |
Unless the weight was of significant delta, it would be near on impossible to see one bike travel faster or slower.
There are also too many other factors to consider:
Rider position
Rider height (longer legs, etc)
Rider muscle composition (stronger legs)
Cadence
Bike maintenance
Road surface
etc
New contributor
add a comment |
Unless the weight was of significant delta, it would be near on impossible to see one bike travel faster or slower.
There are also too many other factors to consider:
Rider position
Rider height (longer legs, etc)
Rider muscle composition (stronger legs)
Cadence
Bike maintenance
Road surface
etc
New contributor
add a comment |
Unless the weight was of significant delta, it would be near on impossible to see one bike travel faster or slower.
There are also too many other factors to consider:
Rider position
Rider height (longer legs, etc)
Rider muscle composition (stronger legs)
Cadence
Bike maintenance
Road surface
etc
New contributor
Unless the weight was of significant delta, it would be near on impossible to see one bike travel faster or slower.
There are also too many other factors to consider:
Rider position
Rider height (longer legs, etc)
Rider muscle composition (stronger legs)
Cadence
Bike maintenance
Road surface
etc
New contributor
New contributor
answered 8 hours ago
Lucero79Lucero79
73 bronze badges
73 bronze badges
New contributor
New contributor
add a comment |
add a comment |
Frank is a new contributor. Be nice, and check out our Code of Conduct.
Frank is a new contributor. Be nice, and check out our Code of Conduct.
Frank is a new contributor. Be nice, and check out our Code of Conduct.
Frank is a new contributor. Be nice, and check out our Code of Conduct.
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3
The only variable in this scenario is the effective rear wheel diameter, determined by air pressure and weight on the rear wheel. Theoretically if tires and pressure are identical, there will be a difference and a heavier rider will travel less distance. Practically, good luck measuring it.
– mattnz
7 hours ago
1
@mattnz - Yep, there will be an effect, but it will be minuscule in most circumstances.
– Daniel R Hicks
7 hours ago