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Front derailleur hard to move due to gear cable angle
How do I adjust my 7-speed Shimano SIS indexed shifter not to miss out one of the cogs?RevoShift Friction: shifting to the largest gear takes a lot of force?Chain falling off inner chain ring no matter how L screw is setProblem setting up Shimano 5800 levers for the first timeWhat is wrong with my Shimano 105 5800 front derailleur?Shimano Ultegra 6800 front derailleur tension problemWhat could be preventing my bicycle from shifting gears?Front derailleur won't change to low gearShimano front derailleur - tensioning, can't move shifterFront derailleur cable suddenly very slack (no shifting), not sure what's caused it
To avoid chain rub on the inside of my derailleur when in the smallest chainring and in the biggest cog on the cassette I've turned the L-screw out / counter clockwise. Now the rub is gone but due to the angle the cable is pulling the front derailleur it is nearly impossible to get into the largest chainring.
Turning the L-screw in a bit more pivots the derailleur into a more horizontal position so that the force of the pulling gear cable is no longer towards the derailleur's center of rotation and thus can actually move the derailleur.
To fix this I'd probably need to either get the cable to pull from a position closer to A
or at least to somehow generate some force towards A
.
The other solution would be to turn the L-screw in again and avoid the chain rub in a different way.
How do I do that?
Tried:
- I've already tried to move the derailleur on its braze-on mount.
- I also turned the small chainring around so that the numbers imprinted are facing the outside.
- I'm sure it's not about friction in the cables. Shifting works fine in both direction if the L-screw is further in.
- The manual mentions that the little pin around which the gear cable is lead can be rotated by 180°. I've tried both positions, the left one improves the issue slightly.
Bike is a Cannondale Synapse Women's (Cann-S2), 9-Speed R3000 Shimano Sora, front derailleur: braze-on type.
The green line is the gear cable.
shimano chainring derailleur-front
New contributor
add a comment |
To avoid chain rub on the inside of my derailleur when in the smallest chainring and in the biggest cog on the cassette I've turned the L-screw out / counter clockwise. Now the rub is gone but due to the angle the cable is pulling the front derailleur it is nearly impossible to get into the largest chainring.
Turning the L-screw in a bit more pivots the derailleur into a more horizontal position so that the force of the pulling gear cable is no longer towards the derailleur's center of rotation and thus can actually move the derailleur.
To fix this I'd probably need to either get the cable to pull from a position closer to A
or at least to somehow generate some force towards A
.
The other solution would be to turn the L-screw in again and avoid the chain rub in a different way.
How do I do that?
Tried:
- I've already tried to move the derailleur on its braze-on mount.
- I also turned the small chainring around so that the numbers imprinted are facing the outside.
- I'm sure it's not about friction in the cables. Shifting works fine in both direction if the L-screw is further in.
- The manual mentions that the little pin around which the gear cable is lead can be rotated by 180°. I've tried both positions, the left one improves the issue slightly.
Bike is a Cannondale Synapse Women's (Cann-S2), 9-Speed R3000 Shimano Sora, front derailleur: braze-on type.
The green line is the gear cable.
shimano chainring derailleur-front
New contributor
Mm good question. Does the cable run under the bottom bracket through an external guide? I wonder if with a different guide it could be further to the left from the point it turns upwards
– Swifty
2 hours ago
1
Thanks, I've added an image of that area. Because of the narrow section where the cable runs through I don't think a different guide would be able to improve the angle.
– nitzel
1 hour ago
add a comment |
To avoid chain rub on the inside of my derailleur when in the smallest chainring and in the biggest cog on the cassette I've turned the L-screw out / counter clockwise. Now the rub is gone but due to the angle the cable is pulling the front derailleur it is nearly impossible to get into the largest chainring.
Turning the L-screw in a bit more pivots the derailleur into a more horizontal position so that the force of the pulling gear cable is no longer towards the derailleur's center of rotation and thus can actually move the derailleur.
To fix this I'd probably need to either get the cable to pull from a position closer to A
or at least to somehow generate some force towards A
.
The other solution would be to turn the L-screw in again and avoid the chain rub in a different way.
How do I do that?
Tried:
- I've already tried to move the derailleur on its braze-on mount.
- I also turned the small chainring around so that the numbers imprinted are facing the outside.
- I'm sure it's not about friction in the cables. Shifting works fine in both direction if the L-screw is further in.
- The manual mentions that the little pin around which the gear cable is lead can be rotated by 180°. I've tried both positions, the left one improves the issue slightly.
Bike is a Cannondale Synapse Women's (Cann-S2), 9-Speed R3000 Shimano Sora, front derailleur: braze-on type.
The green line is the gear cable.
shimano chainring derailleur-front
New contributor
To avoid chain rub on the inside of my derailleur when in the smallest chainring and in the biggest cog on the cassette I've turned the L-screw out / counter clockwise. Now the rub is gone but due to the angle the cable is pulling the front derailleur it is nearly impossible to get into the largest chainring.
Turning the L-screw in a bit more pivots the derailleur into a more horizontal position so that the force of the pulling gear cable is no longer towards the derailleur's center of rotation and thus can actually move the derailleur.
To fix this I'd probably need to either get the cable to pull from a position closer to A
or at least to somehow generate some force towards A
.
The other solution would be to turn the L-screw in again and avoid the chain rub in a different way.
How do I do that?
Tried:
- I've already tried to move the derailleur on its braze-on mount.
- I also turned the small chainring around so that the numbers imprinted are facing the outside.
- I'm sure it's not about friction in the cables. Shifting works fine in both direction if the L-screw is further in.
- The manual mentions that the little pin around which the gear cable is lead can be rotated by 180°. I've tried both positions, the left one improves the issue slightly.
Bike is a Cannondale Synapse Women's (Cann-S2), 9-Speed R3000 Shimano Sora, front derailleur: braze-on type.
The green line is the gear cable.
shimano chainring derailleur-front
shimano chainring derailleur-front
New contributor
New contributor
edited 1 hour ago
nitzel
New contributor
asked 2 hours ago
nitzelnitzel
1235
1235
New contributor
New contributor
Mm good question. Does the cable run under the bottom bracket through an external guide? I wonder if with a different guide it could be further to the left from the point it turns upwards
– Swifty
2 hours ago
1
Thanks, I've added an image of that area. Because of the narrow section where the cable runs through I don't think a different guide would be able to improve the angle.
– nitzel
1 hour ago
add a comment |
Mm good question. Does the cable run under the bottom bracket through an external guide? I wonder if with a different guide it could be further to the left from the point it turns upwards
– Swifty
2 hours ago
1
Thanks, I've added an image of that area. Because of the narrow section where the cable runs through I don't think a different guide would be able to improve the angle.
– nitzel
1 hour ago
Mm good question. Does the cable run under the bottom bracket through an external guide? I wonder if with a different guide it could be further to the left from the point it turns upwards
– Swifty
2 hours ago
Mm good question. Does the cable run under the bottom bracket through an external guide? I wonder if with a different guide it could be further to the left from the point it turns upwards
– Swifty
2 hours ago
1
1
Thanks, I've added an image of that area. Because of the narrow section where the cable runs through I don't think a different guide would be able to improve the angle.
– nitzel
1 hour ago
Thanks, I've added an image of that area. Because of the narrow section where the cable runs through I don't think a different guide would be able to improve the angle.
– nitzel
1 hour ago
add a comment |
2 Answers
2
active
oldest
votes
Having looked through the manual it seems that your shifter cable emerges from the frame on the right hand side of the bike, so the converter should be installed with the pin to the left, which should result in an acceptable angle between the shifter cable and derailleur lever.
I'd definitely rule out all other possibilities that might result in excessive effort required at the shift lever. Detach the cable from the derailleur, put some tension on it (may need to grip it with pliers), actuate the shifter and make sure the cable runs freely. Check the cable run from the shifter to the derailleur make sure there are no snags, housing is properly inserted into stops on the frame etc. You may even want to remove the cable and clean and lube it.
I'd also check the derailleur adjustment. especially alignment. You say the chain rubs at the back end of the cage - if the back end of the derailleur cage is toed out sightly it may be causing the rub. Park Tool has a great step-step video on front derailleur adjustment that can be found here: https://www.parktool.com/blog/repair-help/front-derailleur-adjustment
Thanks for bringing me back to the alignment. I've found reference to a hidden "Support bolt" in the manual on page 11. I'll see if poking that helps and will update here accordingly. Also thanks for editing/cleaning up my question.
– nitzel
1 hour ago
1
That boltC
on page 11 fixed the alignment! Then I could tighten the L-screw again and now it's much easier to shift into the big ring.
– nitzel
1 hour ago
@nitzel excellent, glad to help
– Argenti Apparatus
56 mins ago
1
@nitzel BTW, you edit would be better suited to an addition to your question rather than in my answer. You can even actually answer your own question with the info about the alignment adjustment in the Sora derailleur
– Argenti Apparatus
49 mins ago
add a comment |
The derailleur was slightly misaligned as Argenti Apparatus had suggested.
To reduce the toe out of this particular braze-on derailleur screw out the support bolt (Bolt C on page 11, 2mm allen key) and re-adjust the derailleur on its mount.
I was then able to screw in the L-screw again and thust he cable-pull-angle was improved. Now shifiting to the big chainring is working fine again.
To reproduce you may need to decrease the gear cable tension to allow the derailleur to move away from the chainring towards the frame.
New contributor
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Having looked through the manual it seems that your shifter cable emerges from the frame on the right hand side of the bike, so the converter should be installed with the pin to the left, which should result in an acceptable angle between the shifter cable and derailleur lever.
I'd definitely rule out all other possibilities that might result in excessive effort required at the shift lever. Detach the cable from the derailleur, put some tension on it (may need to grip it with pliers), actuate the shifter and make sure the cable runs freely. Check the cable run from the shifter to the derailleur make sure there are no snags, housing is properly inserted into stops on the frame etc. You may even want to remove the cable and clean and lube it.
I'd also check the derailleur adjustment. especially alignment. You say the chain rubs at the back end of the cage - if the back end of the derailleur cage is toed out sightly it may be causing the rub. Park Tool has a great step-step video on front derailleur adjustment that can be found here: https://www.parktool.com/blog/repair-help/front-derailleur-adjustment
Thanks for bringing me back to the alignment. I've found reference to a hidden "Support bolt" in the manual on page 11. I'll see if poking that helps and will update here accordingly. Also thanks for editing/cleaning up my question.
– nitzel
1 hour ago
1
That boltC
on page 11 fixed the alignment! Then I could tighten the L-screw again and now it's much easier to shift into the big ring.
– nitzel
1 hour ago
@nitzel excellent, glad to help
– Argenti Apparatus
56 mins ago
1
@nitzel BTW, you edit would be better suited to an addition to your question rather than in my answer. You can even actually answer your own question with the info about the alignment adjustment in the Sora derailleur
– Argenti Apparatus
49 mins ago
add a comment |
Having looked through the manual it seems that your shifter cable emerges from the frame on the right hand side of the bike, so the converter should be installed with the pin to the left, which should result in an acceptable angle between the shifter cable and derailleur lever.
I'd definitely rule out all other possibilities that might result in excessive effort required at the shift lever. Detach the cable from the derailleur, put some tension on it (may need to grip it with pliers), actuate the shifter and make sure the cable runs freely. Check the cable run from the shifter to the derailleur make sure there are no snags, housing is properly inserted into stops on the frame etc. You may even want to remove the cable and clean and lube it.
I'd also check the derailleur adjustment. especially alignment. You say the chain rubs at the back end of the cage - if the back end of the derailleur cage is toed out sightly it may be causing the rub. Park Tool has a great step-step video on front derailleur adjustment that can be found here: https://www.parktool.com/blog/repair-help/front-derailleur-adjustment
Thanks for bringing me back to the alignment. I've found reference to a hidden "Support bolt" in the manual on page 11. I'll see if poking that helps and will update here accordingly. Also thanks for editing/cleaning up my question.
– nitzel
1 hour ago
1
That boltC
on page 11 fixed the alignment! Then I could tighten the L-screw again and now it's much easier to shift into the big ring.
– nitzel
1 hour ago
@nitzel excellent, glad to help
– Argenti Apparatus
56 mins ago
1
@nitzel BTW, you edit would be better suited to an addition to your question rather than in my answer. You can even actually answer your own question with the info about the alignment adjustment in the Sora derailleur
– Argenti Apparatus
49 mins ago
add a comment |
Having looked through the manual it seems that your shifter cable emerges from the frame on the right hand side of the bike, so the converter should be installed with the pin to the left, which should result in an acceptable angle between the shifter cable and derailleur lever.
I'd definitely rule out all other possibilities that might result in excessive effort required at the shift lever. Detach the cable from the derailleur, put some tension on it (may need to grip it with pliers), actuate the shifter and make sure the cable runs freely. Check the cable run from the shifter to the derailleur make sure there are no snags, housing is properly inserted into stops on the frame etc. You may even want to remove the cable and clean and lube it.
I'd also check the derailleur adjustment. especially alignment. You say the chain rubs at the back end of the cage - if the back end of the derailleur cage is toed out sightly it may be causing the rub. Park Tool has a great step-step video on front derailleur adjustment that can be found here: https://www.parktool.com/blog/repair-help/front-derailleur-adjustment
Having looked through the manual it seems that your shifter cable emerges from the frame on the right hand side of the bike, so the converter should be installed with the pin to the left, which should result in an acceptable angle between the shifter cable and derailleur lever.
I'd definitely rule out all other possibilities that might result in excessive effort required at the shift lever. Detach the cable from the derailleur, put some tension on it (may need to grip it with pliers), actuate the shifter and make sure the cable runs freely. Check the cable run from the shifter to the derailleur make sure there are no snags, housing is properly inserted into stops on the frame etc. You may even want to remove the cable and clean and lube it.
I'd also check the derailleur adjustment. especially alignment. You say the chain rubs at the back end of the cage - if the back end of the derailleur cage is toed out sightly it may be causing the rub. Park Tool has a great step-step video on front derailleur adjustment that can be found here: https://www.parktool.com/blog/repair-help/front-derailleur-adjustment
answered 1 hour ago
Argenti ApparatusArgenti Apparatus
39.8k34198
39.8k34198
Thanks for bringing me back to the alignment. I've found reference to a hidden "Support bolt" in the manual on page 11. I'll see if poking that helps and will update here accordingly. Also thanks for editing/cleaning up my question.
– nitzel
1 hour ago
1
That boltC
on page 11 fixed the alignment! Then I could tighten the L-screw again and now it's much easier to shift into the big ring.
– nitzel
1 hour ago
@nitzel excellent, glad to help
– Argenti Apparatus
56 mins ago
1
@nitzel BTW, you edit would be better suited to an addition to your question rather than in my answer. You can even actually answer your own question with the info about the alignment adjustment in the Sora derailleur
– Argenti Apparatus
49 mins ago
add a comment |
Thanks for bringing me back to the alignment. I've found reference to a hidden "Support bolt" in the manual on page 11. I'll see if poking that helps and will update here accordingly. Also thanks for editing/cleaning up my question.
– nitzel
1 hour ago
1
That boltC
on page 11 fixed the alignment! Then I could tighten the L-screw again and now it's much easier to shift into the big ring.
– nitzel
1 hour ago
@nitzel excellent, glad to help
– Argenti Apparatus
56 mins ago
1
@nitzel BTW, you edit would be better suited to an addition to your question rather than in my answer. You can even actually answer your own question with the info about the alignment adjustment in the Sora derailleur
– Argenti Apparatus
49 mins ago
Thanks for bringing me back to the alignment. I've found reference to a hidden "Support bolt" in the manual on page 11. I'll see if poking that helps and will update here accordingly. Also thanks for editing/cleaning up my question.
– nitzel
1 hour ago
Thanks for bringing me back to the alignment. I've found reference to a hidden "Support bolt" in the manual on page 11. I'll see if poking that helps and will update here accordingly. Also thanks for editing/cleaning up my question.
– nitzel
1 hour ago
1
1
That bolt
C
on page 11 fixed the alignment! Then I could tighten the L-screw again and now it's much easier to shift into the big ring.– nitzel
1 hour ago
That bolt
C
on page 11 fixed the alignment! Then I could tighten the L-screw again and now it's much easier to shift into the big ring.– nitzel
1 hour ago
@nitzel excellent, glad to help
– Argenti Apparatus
56 mins ago
@nitzel excellent, glad to help
– Argenti Apparatus
56 mins ago
1
1
@nitzel BTW, you edit would be better suited to an addition to your question rather than in my answer. You can even actually answer your own question with the info about the alignment adjustment in the Sora derailleur
– Argenti Apparatus
49 mins ago
@nitzel BTW, you edit would be better suited to an addition to your question rather than in my answer. You can even actually answer your own question with the info about the alignment adjustment in the Sora derailleur
– Argenti Apparatus
49 mins ago
add a comment |
The derailleur was slightly misaligned as Argenti Apparatus had suggested.
To reduce the toe out of this particular braze-on derailleur screw out the support bolt (Bolt C on page 11, 2mm allen key) and re-adjust the derailleur on its mount.
I was then able to screw in the L-screw again and thust he cable-pull-angle was improved. Now shifiting to the big chainring is working fine again.
To reproduce you may need to decrease the gear cable tension to allow the derailleur to move away from the chainring towards the frame.
New contributor
add a comment |
The derailleur was slightly misaligned as Argenti Apparatus had suggested.
To reduce the toe out of this particular braze-on derailleur screw out the support bolt (Bolt C on page 11, 2mm allen key) and re-adjust the derailleur on its mount.
I was then able to screw in the L-screw again and thust he cable-pull-angle was improved. Now shifiting to the big chainring is working fine again.
To reproduce you may need to decrease the gear cable tension to allow the derailleur to move away from the chainring towards the frame.
New contributor
add a comment |
The derailleur was slightly misaligned as Argenti Apparatus had suggested.
To reduce the toe out of this particular braze-on derailleur screw out the support bolt (Bolt C on page 11, 2mm allen key) and re-adjust the derailleur on its mount.
I was then able to screw in the L-screw again and thust he cable-pull-angle was improved. Now shifiting to the big chainring is working fine again.
To reproduce you may need to decrease the gear cable tension to allow the derailleur to move away from the chainring towards the frame.
New contributor
The derailleur was slightly misaligned as Argenti Apparatus had suggested.
To reduce the toe out of this particular braze-on derailleur screw out the support bolt (Bolt C on page 11, 2mm allen key) and re-adjust the derailleur on its mount.
I was then able to screw in the L-screw again and thust he cable-pull-angle was improved. Now shifiting to the big chainring is working fine again.
To reproduce you may need to decrease the gear cable tension to allow the derailleur to move away from the chainring towards the frame.
New contributor
New contributor
answered 39 mins ago
nitzelnitzel
1235
1235
New contributor
New contributor
add a comment |
add a comment |
nitzel is a new contributor. Be nice, and check out our Code of Conduct.
nitzel is a new contributor. Be nice, and check out our Code of Conduct.
nitzel is a new contributor. Be nice, and check out our Code of Conduct.
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Mm good question. Does the cable run under the bottom bracket through an external guide? I wonder if with a different guide it could be further to the left from the point it turns upwards
– Swifty
2 hours ago
1
Thanks, I've added an image of that area. Because of the narrow section where the cable runs through I don't think a different guide would be able to improve the angle.
– nitzel
1 hour ago