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Is there any reason for the rear frame and bottom bracket to be asymmetric?
Clash Royale CLAN TAG#URR8PPP
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I just received a new non-brand carbon frame and immediately noticed that the bottom bracket looks to stick out significantly more to one side than the other, and the rear bottom forks also seem to be have slightly different dimensions - both somewhat asymmetric along the center line of the frame.
Is there any reason for a frame to be designed like this? Does it have something to do with it being a disc brake compatible frame? Or is this more likely a manufacturing / design problem?
Here are some images:
Thanks! I really appreciate any help + advice.
frames bottom-bracket carbon design
edited 26 mins ago
Mike
2,696723
asked 6 hours ago
aakzeman
161
New contributor
aakzeman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
up vote
3
down vote
favorite
I just received a new non-brand carbon frame and immediately noticed that the bottom bracket looks to stick out significantly more to one side than the other, and the rear bottom forks also seem to be have slightly different dimensions - both somewhat asymmetric along the center line of the frame.
Is there any reason for a frame to be designed like this? Does it have something to do with it being a disc brake compatible frame? Or is this more likely a manufacturing / design problem?
Here are some images:
Thanks! I really appreciate any help + advice.
frames bottom-bracket carbon design
edited 26 mins ago
Mike
2,696723
asked 6 hours ago
aakzeman
161
New contributor
aakzeman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
It's the chainstays that are asymmetrical, not the frame itself. If you want to be 100% sure whether the frame is symmetrical, run a thin rope from the rear dropouts (both left and right) to the head tube and measure the distance from the rope to the down tube. The distance on both sides should be identical (within the measurement error).
– Mike
23 mins ago
The magnitude of the asymmetry around the bottom bracket makes it very clear that this asymmetry is by design. You wouldn't produce such an asymmetry by accident. What you are seeing is a form that follows function, making the chain-stay go out of the way for the chain-rings.
– cmaster
10 mins ago
add a comment |
up vote
3
down vote
favorite
up vote
3
down vote
favorite
I just received a new non-brand carbon frame and immediately noticed that the bottom bracket looks to stick out significantly more to one side than the other, and the rear bottom forks also seem to be have slightly different dimensions - both somewhat asymmetric along the center line of the frame.
Is there any reason for a frame to be designed like this? Does it have something to do with it being a disc brake compatible frame? Or is this more likely a manufacturing / design problem?
Here are some images:
Thanks! I really appreciate any help + advice.
frames bottom-bracket carbon design
edited 26 mins ago
Mike
2,696723
asked 6 hours ago
aakzeman
161
New contributor
aakzeman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I just received a new non-brand carbon frame and immediately noticed that the bottom bracket looks to stick out significantly more to one side than the other, and the rear bottom forks also seem to be have slightly different dimensions - both somewhat asymmetric along the center line of the frame.
Is there any reason for a frame to be designed like this? Does it have something to do with it being a disc brake compatible frame? Or is this more likely a manufacturing / design problem?
Here are some images:
Thanks! I really appreciate any help + advice.
frames bottom-bracket carbon design
frames bottom-bracket carbon design
edited 26 mins ago
Mike
2,696723
asked 6 hours ago
aakzeman
161
New contributor
aakzeman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 26 mins ago
Mike
2,696723
asked 6 hours ago
aakzeman
161
New contributor
aakzeman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 26 mins ago
Mike
2,696723
edited 26 mins ago
Mike
2,696723
edited 26 mins ago
Mike
2,696723
2,696723
asked 6 hours ago
aakzeman
161
New contributor
aakzeman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 6 hours ago
aakzeman
161
asked 6 hours ago
aakzeman
161
161
New contributor
aakzeman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
aakzeman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
aakzeman is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
It's the chainstays that are asymmetrical, not the frame itself. If you want to be 100% sure whether the frame is symmetrical, run a thin rope from the rear dropouts (both left and right) to the head tube and measure the distance from the rope to the down tube. The distance on both sides should be identical (within the measurement error).
– Mike
23 mins ago
The magnitude of the asymmetry around the bottom bracket makes it very clear that this asymmetry is by design. You wouldn't produce such an asymmetry by accident. What you are seeing is a form that follows function, making the chain-stay go out of the way for the chain-rings.
– cmaster
10 mins ago
add a comment |
It's the chainstays that are asymmetrical, not the frame itself. If you want to be 100% sure whether the frame is symmetrical, run a thin rope from the rear dropouts (both left and right) to the head tube and measure the distance from the rope to the down tube. The distance on both sides should be identical (within the measurement error).
– Mike
23 mins ago
The magnitude of the asymmetry around the bottom bracket makes it very clear that this asymmetry is by design. You wouldn't produce such an asymmetry by accident. What you are seeing is a form that follows function, making the chain-stay go out of the way for the chain-rings.
– cmaster
10 mins ago
It's the chainstays that are asymmetrical, not the frame itself. If you want to be 100% sure whether the frame is symmetrical, run a thin rope from the rear dropouts (both left and right) to the head tube and measure the distance from the rope to the down tube. The distance on both sides should be identical (within the measurement error).
– Mike
23 mins ago
It's the chainstays that are asymmetrical, not the frame itself. If you want to be 100% sure whether the frame is symmetrical, run a thin rope from the rear dropouts (both left and right) to the head tube and measure the distance from the rope to the down tube. The distance on both sides should be identical (within the measurement error).
– Mike
23 mins ago
The magnitude of the asymmetry around the bottom bracket makes it very clear that this asymmetry is by design. You wouldn't produce such an asymmetry by accident. What you are seeing is a form that follows function, making the chain-stay go out of the way for the chain-rings.
– cmaster
10 mins ago
The magnitude of the asymmetry around the bottom bracket makes it very clear that this asymmetry is by design. You wouldn't produce such an asymmetry by accident. What you are seeing is a form that follows function, making the chain-stay go out of the way for the chain-rings.
– cmaster
10 mins ago
add a comment |
3 Answers
3
active
oldest
votes
up vote
3
down vote
The bottom bracket shell does not really stick out more on the drive side, it's symmetrical around the center line of the frame. The non drive side bottom bracket shell and chainstay are just more built up.
On reason is providing clearance for the chainrings on the drive side.
answered 5 hours ago
Argenti Apparatus
29.7k23377
1
Put in a rear wheel and you'll notice that the tyre is exactly behind the seat tube.
– Carel
5 hours ago
add a comment |
up vote
3
down vote
Some bikes have a drive-side chainstay with a downward kink to minimize chain slap. Many bikes need to get creative with the path that the drive-side chainstay travels along the Y axis, in order to "thread the needle" between the rear tire and the chainrings, which can be a very tight fit. It's fairly common for the drive-side chainstay to be stouter, because that's what is most directly loaded when you're pedaling. Cannondale even uses asymmetric bottom brackets.
answered 3 hours ago
Adam Rice
4,8581330
On a road bike this would be to reduce chain suck, rather than chain slap. Giant does this on their road frames rather than a metal plate attached to the frame to deflect the chain .
– Rider_X
2 hours ago
add a comment |
up vote
1
down vote
Is there any reason for the rear frame and bottom bracket to be asymmetric?
The crankset, chain, and gearing are all on one side, making just about every standard bicycle asymmetric.
Given that there are different asymmetric forces on the parts of the frame because of that, there's plenty of reason for a frame to be asymmetric.
answered 5 hours ago
Andrew Henle
78135
Thank you for the response. I understand that all frames will have some differences between the two sides to compensate for the spacing of the crankset, chain, etc., but in this instance it looks to be much more pronounced than usual. Would you mind commenting on the images I included?
– aakzeman
5 hours ago
add a comment |
3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
3
down vote
The bottom bracket shell does not really stick out more on the drive side, it's symmetrical around the center line of the frame. The non drive side bottom bracket shell and chainstay are just more built up.
On reason is providing clearance for the chainrings on the drive side.
answered 5 hours ago
Argenti Apparatus
29.7k23377
1
Put in a rear wheel and you'll notice that the tyre is exactly behind the seat tube.
– Carel
5 hours ago
add a comment |
up vote
3
down vote
The bottom bracket shell does not really stick out more on the drive side, it's symmetrical around the center line of the frame. The non drive side bottom bracket shell and chainstay are just more built up.
On reason is providing clearance for the chainrings on the drive side.
answered 5 hours ago
Argenti Apparatus
29.7k23377
1
Put in a rear wheel and you'll notice that the tyre is exactly behind the seat tube.
– Carel
5 hours ago
add a comment |
up vote
3
down vote
up vote
3
down vote
The bottom bracket shell does not really stick out more on the drive side, it's symmetrical around the center line of the frame. The non drive side bottom bracket shell and chainstay are just more built up.
On reason is providing clearance for the chainrings on the drive side.
answered 5 hours ago
Argenti Apparatus
29.7k23377
The bottom bracket shell does not really stick out more on the drive side, it's symmetrical around the center line of the frame. The non drive side bottom bracket shell and chainstay are just more built up.
On reason is providing clearance for the chainrings on the drive side.
answered 5 hours ago
Argenti Apparatus
29.7k23377
answered 5 hours ago
Argenti Apparatus
29.7k23377
answered 5 hours ago
Argenti Apparatus
29.7k23377
answered 5 hours ago
Argenti Apparatus
29.7k23377
29.7k23377
1
Put in a rear wheel and you'll notice that the tyre is exactly behind the seat tube.
– Carel
5 hours ago
add a comment |
1
Put in a rear wheel and you'll notice that the tyre is exactly behind the seat tube.
– Carel
5 hours ago
1
1
Put in a rear wheel and you'll notice that the tyre is exactly behind the seat tube.
– Carel
5 hours ago
Put in a rear wheel and you'll notice that the tyre is exactly behind the seat tube.
– Carel
5 hours ago
add a comment |
up vote
3
down vote
Some bikes have a drive-side chainstay with a downward kink to minimize chain slap. Many bikes need to get creative with the path that the drive-side chainstay travels along the Y axis, in order to "thread the needle" between the rear tire and the chainrings, which can be a very tight fit. It's fairly common for the drive-side chainstay to be stouter, because that's what is most directly loaded when you're pedaling. Cannondale even uses asymmetric bottom brackets.
answered 3 hours ago
Adam Rice
4,8581330
On a road bike this would be to reduce chain suck, rather than chain slap. Giant does this on their road frames rather than a metal plate attached to the frame to deflect the chain .
– Rider_X
2 hours ago
add a comment |
up vote
3
down vote
Some bikes have a drive-side chainstay with a downward kink to minimize chain slap. Many bikes need to get creative with the path that the drive-side chainstay travels along the Y axis, in order to "thread the needle" between the rear tire and the chainrings, which can be a very tight fit. It's fairly common for the drive-side chainstay to be stouter, because that's what is most directly loaded when you're pedaling. Cannondale even uses asymmetric bottom brackets.
answered 3 hours ago
Adam Rice
4,8581330
On a road bike this would be to reduce chain suck, rather than chain slap. Giant does this on their road frames rather than a metal plate attached to the frame to deflect the chain .
– Rider_X
2 hours ago
add a comment |
up vote
3
down vote
up vote
3
down vote
Some bikes have a drive-side chainstay with a downward kink to minimize chain slap. Many bikes need to get creative with the path that the drive-side chainstay travels along the Y axis, in order to "thread the needle" between the rear tire and the chainrings, which can be a very tight fit. It's fairly common for the drive-side chainstay to be stouter, because that's what is most directly loaded when you're pedaling. Cannondale even uses asymmetric bottom brackets.
answered 3 hours ago
Adam Rice
4,8581330
Some bikes have a drive-side chainstay with a downward kink to minimize chain slap. Many bikes need to get creative with the path that the drive-side chainstay travels along the Y axis, in order to "thread the needle" between the rear tire and the chainrings, which can be a very tight fit. It's fairly common for the drive-side chainstay to be stouter, because that's what is most directly loaded when you're pedaling. Cannondale even uses asymmetric bottom brackets.
answered 3 hours ago
Adam Rice
4,8581330
answered 3 hours ago
Adam Rice
4,8581330
answered 3 hours ago
Adam Rice
4,8581330
answered 3 hours ago
Adam Rice
4,8581330
4,8581330
On a road bike this would be to reduce chain suck, rather than chain slap. Giant does this on their road frames rather than a metal plate attached to the frame to deflect the chain .
– Rider_X
2 hours ago
add a comment |
On a road bike this would be to reduce chain suck, rather than chain slap. Giant does this on their road frames rather than a metal plate attached to the frame to deflect the chain .
– Rider_X
2 hours ago
On a road bike this would be to reduce chain suck, rather than chain slap. Giant does this on their road frames rather than a metal plate attached to the frame to deflect the chain .
– Rider_X
2 hours ago
On a road bike this would be to reduce chain suck, rather than chain slap. Giant does this on their road frames rather than a metal plate attached to the frame to deflect the chain .
– Rider_X
2 hours ago
add a comment |
up vote
1
down vote
Is there any reason for the rear frame and bottom bracket to be asymmetric?
The crankset, chain, and gearing are all on one side, making just about every standard bicycle asymmetric.
Given that there are different asymmetric forces on the parts of the frame because of that, there's plenty of reason for a frame to be asymmetric.
answered 5 hours ago
Andrew Henle
78135
Thank you for the response. I understand that all frames will have some differences between the two sides to compensate for the spacing of the crankset, chain, etc., but in this instance it looks to be much more pronounced than usual. Would you mind commenting on the images I included?
– aakzeman
5 hours ago
add a comment |
up vote
1
down vote
Is there any reason for the rear frame and bottom bracket to be asymmetric?
The crankset, chain, and gearing are all on one side, making just about every standard bicycle asymmetric.
Given that there are different asymmetric forces on the parts of the frame because of that, there's plenty of reason for a frame to be asymmetric.
answered 5 hours ago
Andrew Henle
78135
Thank you for the response. I understand that all frames will have some differences between the two sides to compensate for the spacing of the crankset, chain, etc., but in this instance it looks to be much more pronounced than usual. Would you mind commenting on the images I included?
– aakzeman
5 hours ago
add a comment |
up vote
1
down vote
up vote
1
down vote
Is there any reason for the rear frame and bottom bracket to be asymmetric?
The crankset, chain, and gearing are all on one side, making just about every standard bicycle asymmetric.
Given that there are different asymmetric forces on the parts of the frame because of that, there's plenty of reason for a frame to be asymmetric.
answered 5 hours ago
Andrew Henle
78135
Is there any reason for the rear frame and bottom bracket to be asymmetric?
The crankset, chain, and gearing are all on one side, making just about every standard bicycle asymmetric.
Given that there are different asymmetric forces on the parts of the frame because of that, there's plenty of reason for a frame to be asymmetric.
answered 5 hours ago
Andrew Henle
78135
answered 5 hours ago
Andrew Henle
78135
answered 5 hours ago
Andrew Henle
78135
answered 5 hours ago
Andrew Henle
78135
78135
Thank you for the response. I understand that all frames will have some differences between the two sides to compensate for the spacing of the crankset, chain, etc., but in this instance it looks to be much more pronounced than usual. Would you mind commenting on the images I included?
– aakzeman
5 hours ago
add a comment |
Thank you for the response. I understand that all frames will have some differences between the two sides to compensate for the spacing of the crankset, chain, etc., but in this instance it looks to be much more pronounced than usual. Would you mind commenting on the images I included?
– aakzeman
5 hours ago
Thank you for the response. I understand that all frames will have some differences between the two sides to compensate for the spacing of the crankset, chain, etc., but in this instance it looks to be much more pronounced than usual. Would you mind commenting on the images I included?
– aakzeman
5 hours ago
Thank you for the response. I understand that all frames will have some differences between the two sides to compensate for the spacing of the crankset, chain, etc., but in this instance it looks to be much more pronounced than usual. Would you mind commenting on the images I included?
– aakzeman
5 hours ago
add a comment |
aakzeman is a new contributor. Be nice, and check out our Code of Conduct.
aakzeman is a new contributor. Be nice, and check out our Code of Conduct.
aakzeman is a new contributor. Be nice, and check out our Code of Conduct.
aakzeman is a new contributor. Be nice, and check out our Code of Conduct.
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It's the chainstays that are asymmetrical, not the frame itself. If you want to be 100% sure whether the frame is symmetrical, run a thin rope from the rear dropouts (both left and right) to the head tube and measure the distance from the rope to the down tube. The distance on both sides should be identical (within the measurement error).
– Mike
23 mins ago
The magnitude of the asymmetry around the bottom bracket makes it very clear that this asymmetry is by design. You wouldn't produce such an asymmetry by accident. What you are seeing is a form that follows function, making the chain-stay go out of the way for the chain-rings.
– cmaster
10 mins ago