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How to / is it possible to straighten a bent seatstay/chainstay on a steel frame? At home or inexpensively by a professional


How can you recognise a quality steel frame?How to straighten a bent derailleur hanger?Clear lacquer on steel frame34.9mm front derailleur on steel frame?How to repair a broken steel frame, at the rear drop out /chainstay locationHow to re-shape a bent steel fenderHarsh Winters bike - Steel vs aluminum frame?Can this bent (after crash) rigid steel fork get repaired?Identifying a brazed steel frameBent Peugeot Carbolite 103 Frame













3















I have a Genesis Croix de Fer 20 (725 Chromoly) and crashed with my friend on his bike. On one side the back of the frame bent out so the wheel drops out, it is bent but not crumpled.



I would like to know about the options for fixing it either myself or by a pro without costing too much (I think I could get a new frameset for £350). I am based in Denmark



any help much appreciated I have attached a picture of the fram.



etwisted bike frame










share|improve this question
























  • Make sure you plug the end of the handlebar before your next ride, safety third

    – Swifty
    Jun 21 at 15:44






  • 1





    Cheers, done now :)

    – Hugo Russell
    Jun 21 at 16:49











  • To me the left seat-stay looks bent outwards while the right one shows an inward curving as if the brake bridge transferred the force. Have the geometry of the bike checked.

    – Carel
    Jun 22 at 7:54















3















I have a Genesis Croix de Fer 20 (725 Chromoly) and crashed with my friend on his bike. On one side the back of the frame bent out so the wheel drops out, it is bent but not crumpled.



I would like to know about the options for fixing it either myself or by a pro without costing too much (I think I could get a new frameset for £350). I am based in Denmark



any help much appreciated I have attached a picture of the fram.



etwisted bike frame










share|improve this question
























  • Make sure you plug the end of the handlebar before your next ride, safety third

    – Swifty
    Jun 21 at 15:44






  • 1





    Cheers, done now :)

    – Hugo Russell
    Jun 21 at 16:49











  • To me the left seat-stay looks bent outwards while the right one shows an inward curving as if the brake bridge transferred the force. Have the geometry of the bike checked.

    – Carel
    Jun 22 at 7:54













3












3








3








I have a Genesis Croix de Fer 20 (725 Chromoly) and crashed with my friend on his bike. On one side the back of the frame bent out so the wheel drops out, it is bent but not crumpled.



I would like to know about the options for fixing it either myself or by a pro without costing too much (I think I could get a new frameset for £350). I am based in Denmark



any help much appreciated I have attached a picture of the fram.



etwisted bike frame










share|improve this question
















I have a Genesis Croix de Fer 20 (725 Chromoly) and crashed with my friend on his bike. On one side the back of the frame bent out so the wheel drops out, it is bent but not crumpled.



I would like to know about the options for fixing it either myself or by a pro without costing too much (I think I could get a new frameset for £350). I am based in Denmark



any help much appreciated I have attached a picture of the fram.



etwisted bike frame







frames repair steel






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jun 21 at 13:58









Argenti Apparatus

42.2k3 gold badges45 silver badges104 bronze badges




42.2k3 gold badges45 silver badges104 bronze badges










asked Jun 21 at 13:11









Hugo RussellHugo Russell

162 bronze badges




162 bronze badges












  • Make sure you plug the end of the handlebar before your next ride, safety third

    – Swifty
    Jun 21 at 15:44






  • 1





    Cheers, done now :)

    – Hugo Russell
    Jun 21 at 16:49











  • To me the left seat-stay looks bent outwards while the right one shows an inward curving as if the brake bridge transferred the force. Have the geometry of the bike checked.

    – Carel
    Jun 22 at 7:54

















  • Make sure you plug the end of the handlebar before your next ride, safety third

    – Swifty
    Jun 21 at 15:44






  • 1





    Cheers, done now :)

    – Hugo Russell
    Jun 21 at 16:49











  • To me the left seat-stay looks bent outwards while the right one shows an inward curving as if the brake bridge transferred the force. Have the geometry of the bike checked.

    – Carel
    Jun 22 at 7:54
















Make sure you plug the end of the handlebar before your next ride, safety third

– Swifty
Jun 21 at 15:44





Make sure you plug the end of the handlebar before your next ride, safety third

– Swifty
Jun 21 at 15:44




1




1





Cheers, done now :)

– Hugo Russell
Jun 21 at 16:49





Cheers, done now :)

– Hugo Russell
Jun 21 at 16:49













To me the left seat-stay looks bent outwards while the right one shows an inward curving as if the brake bridge transferred the force. Have the geometry of the bike checked.

– Carel
Jun 22 at 7:54





To me the left seat-stay looks bent outwards while the right one shows an inward curving as if the brake bridge transferred the force. Have the geometry of the bike checked.

– Carel
Jun 22 at 7:54










1 Answer
1






active

oldest

votes


















3














Rear triangle rear alignment of a steel frame is well within the scope of a home mechanic. There are professional tools available but functional versions can be made cheaply from lumber and generic hardware.



RJ the Bike Guy has some good videos on his YouTube channel (embedded below) that show how to measure how far the stays are out of alignment, how to re-align them and how to re-align the dropouts



You will of course have to make a determination as to whether your frame is too deformed to be safely re-aligned. Once you have determined how far the stays are out of alignment you can seek advice and make that decision.
















share|improve this answer























  • Of course Sheldon Brown documented how to do this long before Videos were a thing.

    – mattnz
    Jun 22 at 7:03













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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









3














Rear triangle rear alignment of a steel frame is well within the scope of a home mechanic. There are professional tools available but functional versions can be made cheaply from lumber and generic hardware.



RJ the Bike Guy has some good videos on his YouTube channel (embedded below) that show how to measure how far the stays are out of alignment, how to re-align them and how to re-align the dropouts



You will of course have to make a determination as to whether your frame is too deformed to be safely re-aligned. Once you have determined how far the stays are out of alignment you can seek advice and make that decision.
















share|improve this answer























  • Of course Sheldon Brown documented how to do this long before Videos were a thing.

    – mattnz
    Jun 22 at 7:03















3














Rear triangle rear alignment of a steel frame is well within the scope of a home mechanic. There are professional tools available but functional versions can be made cheaply from lumber and generic hardware.



RJ the Bike Guy has some good videos on his YouTube channel (embedded below) that show how to measure how far the stays are out of alignment, how to re-align them and how to re-align the dropouts



You will of course have to make a determination as to whether your frame is too deformed to be safely re-aligned. Once you have determined how far the stays are out of alignment you can seek advice and make that decision.
















share|improve this answer























  • Of course Sheldon Brown documented how to do this long before Videos were a thing.

    – mattnz
    Jun 22 at 7:03













3












3








3







Rear triangle rear alignment of a steel frame is well within the scope of a home mechanic. There are professional tools available but functional versions can be made cheaply from lumber and generic hardware.



RJ the Bike Guy has some good videos on his YouTube channel (embedded below) that show how to measure how far the stays are out of alignment, how to re-align them and how to re-align the dropouts



You will of course have to make a determination as to whether your frame is too deformed to be safely re-aligned. Once you have determined how far the stays are out of alignment you can seek advice and make that decision.
















share|improve this answer













Rear triangle rear alignment of a steel frame is well within the scope of a home mechanic. There are professional tools available but functional versions can be made cheaply from lumber and generic hardware.



RJ the Bike Guy has some good videos on his YouTube channel (embedded below) that show how to measure how far the stays are out of alignment, how to re-align them and how to re-align the dropouts



You will of course have to make a determination as to whether your frame is too deformed to be safely re-aligned. Once you have determined how far the stays are out of alignment you can seek advice and make that decision.

































share|improve this answer












share|improve this answer



share|improve this answer










answered Jun 21 at 13:55









Argenti ApparatusArgenti Apparatus

42.2k3 gold badges45 silver badges104 bronze badges




42.2k3 gold badges45 silver badges104 bronze badges












  • Of course Sheldon Brown documented how to do this long before Videos were a thing.

    – mattnz
    Jun 22 at 7:03

















  • Of course Sheldon Brown documented how to do this long before Videos were a thing.

    – mattnz
    Jun 22 at 7:03
















Of course Sheldon Brown documented how to do this long before Videos were a thing.

– mattnz
Jun 22 at 7:03





Of course Sheldon Brown documented how to do this long before Videos were a thing.

– mattnz
Jun 22 at 7:03

















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