Banged frame: Is it still safe to use?












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My girlfriend's bicycle was vandalized by a neighbour. It seems like they banged it with a hammer or something right in the middle of the frame. Is this still safe to use?



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  • That looks like a thin-walled aluminum frame. Try this: sit down in a chair. Take an empty aluminum soda can and put it upright on the floor in front of you. Take one of your feet, place it on top of the can and slowly put a decent amount of weight on the can - not enough to crush it, but a good amount of weight. Now carefully lean over, and without removing any of the pressure from your foot on the can, tap the side of the can with your finger. That can will collapse almost immediately if you do it right. Tubes get a lot of their strength from the uniform shape - dents ruin that.

    – Andrew Henle
    45 mins ago











  • I thought Condor Fratello(s) were steel so edit the question with frame material - most answers are assuming aluminium at this point. I expect the answer will still be to not ride the bike but you might get input on how to get it fixed well. It’s certainly a quality frame worth considering fixing (and getting neighbour to foot the bill).

    – Swifty
    34 mins ago


















2















My girlfriend's bicycle was vandalized by a neighbour. It seems like they banged it with a hammer or something right in the middle of the frame. Is this still safe to use?



enter image description here










share|improve this question







New contributor




Jonorl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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  • That looks like a thin-walled aluminum frame. Try this: sit down in a chair. Take an empty aluminum soda can and put it upright on the floor in front of you. Take one of your feet, place it on top of the can and slowly put a decent amount of weight on the can - not enough to crush it, but a good amount of weight. Now carefully lean over, and without removing any of the pressure from your foot on the can, tap the side of the can with your finger. That can will collapse almost immediately if you do it right. Tubes get a lot of their strength from the uniform shape - dents ruin that.

    – Andrew Henle
    45 mins ago











  • I thought Condor Fratello(s) were steel so edit the question with frame material - most answers are assuming aluminium at this point. I expect the answer will still be to not ride the bike but you might get input on how to get it fixed well. It’s certainly a quality frame worth considering fixing (and getting neighbour to foot the bill).

    – Swifty
    34 mins ago
















2












2








2








My girlfriend's bicycle was vandalized by a neighbour. It seems like they banged it with a hammer or something right in the middle of the frame. Is this still safe to use?



enter image description here










share|improve this question







New contributor




Jonorl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












My girlfriend's bicycle was vandalized by a neighbour. It seems like they banged it with a hammer or something right in the middle of the frame. Is this still safe to use?



enter image description here







frames safety






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asked 1 hour ago









JonorlJonorl

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Check out our Code of Conduct.













  • That looks like a thin-walled aluminum frame. Try this: sit down in a chair. Take an empty aluminum soda can and put it upright on the floor in front of you. Take one of your feet, place it on top of the can and slowly put a decent amount of weight on the can - not enough to crush it, but a good amount of weight. Now carefully lean over, and without removing any of the pressure from your foot on the can, tap the side of the can with your finger. That can will collapse almost immediately if you do it right. Tubes get a lot of their strength from the uniform shape - dents ruin that.

    – Andrew Henle
    45 mins ago











  • I thought Condor Fratello(s) were steel so edit the question with frame material - most answers are assuming aluminium at this point. I expect the answer will still be to not ride the bike but you might get input on how to get it fixed well. It’s certainly a quality frame worth considering fixing (and getting neighbour to foot the bill).

    – Swifty
    34 mins ago





















  • That looks like a thin-walled aluminum frame. Try this: sit down in a chair. Take an empty aluminum soda can and put it upright on the floor in front of you. Take one of your feet, place it on top of the can and slowly put a decent amount of weight on the can - not enough to crush it, but a good amount of weight. Now carefully lean over, and without removing any of the pressure from your foot on the can, tap the side of the can with your finger. That can will collapse almost immediately if you do it right. Tubes get a lot of their strength from the uniform shape - dents ruin that.

    – Andrew Henle
    45 mins ago











  • I thought Condor Fratello(s) were steel so edit the question with frame material - most answers are assuming aluminium at this point. I expect the answer will still be to not ride the bike but you might get input on how to get it fixed well. It’s certainly a quality frame worth considering fixing (and getting neighbour to foot the bill).

    – Swifty
    34 mins ago



















That looks like a thin-walled aluminum frame. Try this: sit down in a chair. Take an empty aluminum soda can and put it upright on the floor in front of you. Take one of your feet, place it on top of the can and slowly put a decent amount of weight on the can - not enough to crush it, but a good amount of weight. Now carefully lean over, and without removing any of the pressure from your foot on the can, tap the side of the can with your finger. That can will collapse almost immediately if you do it right. Tubes get a lot of their strength from the uniform shape - dents ruin that.

– Andrew Henle
45 mins ago





That looks like a thin-walled aluminum frame. Try this: sit down in a chair. Take an empty aluminum soda can and put it upright on the floor in front of you. Take one of your feet, place it on top of the can and slowly put a decent amount of weight on the can - not enough to crush it, but a good amount of weight. Now carefully lean over, and without removing any of the pressure from your foot on the can, tap the side of the can with your finger. That can will collapse almost immediately if you do it right. Tubes get a lot of their strength from the uniform shape - dents ruin that.

– Andrew Henle
45 mins ago













I thought Condor Fratello(s) were steel so edit the question with frame material - most answers are assuming aluminium at this point. I expect the answer will still be to not ride the bike but you might get input on how to get it fixed well. It’s certainly a quality frame worth considering fixing (and getting neighbour to foot the bill).

– Swifty
34 mins ago







I thought Condor Fratello(s) were steel so edit the question with frame material - most answers are assuming aluminium at this point. I expect the answer will still be to not ride the bike but you might get input on how to get it fixed well. It’s certainly a quality frame worth considering fixing (and getting neighbour to foot the bill).

– Swifty
34 mins ago












3 Answers
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1














Sorry for that act of vandalism that happened to you. But I'd refrain from using this bicycle any longer. You'd have problems riding it in a straight line because the wheels are certainly misaligned now which could even cause more uncertain behaviour at speed. The other danger could reside in the sudden failure of the compromised top tube of the frame.



The only thing you could do, apart from filing a complaint with the police would be to take the bike apart and re-use or sell all the undamaged parts.






share|improve this answer































    1














    That frame is definitely not safe to ride anymore. While some steel frames can handle dents pretty well, that is some major damage in what seems to me an aluminium frame. The top tube seems both dented and bent, which likely has affected the steering of the bicycle and also introduces risk of the frame bending inwards under stress.



    I recommend you don't ride that anymore, start looking for a replacement and see if you can get the person responsible for that to fund it.






    share|improve this answer































      1














      Unfortunately I think that level of damage with a big dent and buckled top tube will make the bike dangerous to ride. There's a chance that when a big bump or pothole is hit the top tube will fold and dump the rider face first into the road.



      Additionally, the head tube probably is not aligned with the seat tube anymore, which means the wheels are misaligned which will negatively effect steering.






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        3 Answers
        3






        active

        oldest

        votes








        3 Answers
        3






        active

        oldest

        votes









        active

        oldest

        votes






        active

        oldest

        votes









        1














        Sorry for that act of vandalism that happened to you. But I'd refrain from using this bicycle any longer. You'd have problems riding it in a straight line because the wheels are certainly misaligned now which could even cause more uncertain behaviour at speed. The other danger could reside in the sudden failure of the compromised top tube of the frame.



        The only thing you could do, apart from filing a complaint with the police would be to take the bike apart and re-use or sell all the undamaged parts.






        share|improve this answer




























          1














          Sorry for that act of vandalism that happened to you. But I'd refrain from using this bicycle any longer. You'd have problems riding it in a straight line because the wheels are certainly misaligned now which could even cause more uncertain behaviour at speed. The other danger could reside in the sudden failure of the compromised top tube of the frame.



          The only thing you could do, apart from filing a complaint with the police would be to take the bike apart and re-use or sell all the undamaged parts.






          share|improve this answer


























            1












            1








            1







            Sorry for that act of vandalism that happened to you. But I'd refrain from using this bicycle any longer. You'd have problems riding it in a straight line because the wheels are certainly misaligned now which could even cause more uncertain behaviour at speed. The other danger could reside in the sudden failure of the compromised top tube of the frame.



            The only thing you could do, apart from filing a complaint with the police would be to take the bike apart and re-use or sell all the undamaged parts.






            share|improve this answer













            Sorry for that act of vandalism that happened to you. But I'd refrain from using this bicycle any longer. You'd have problems riding it in a straight line because the wheels are certainly misaligned now which could even cause more uncertain behaviour at speed. The other danger could reside in the sudden failure of the compromised top tube of the frame.



            The only thing you could do, apart from filing a complaint with the police would be to take the bike apart and re-use or sell all the undamaged parts.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 1 hour ago









            CarelCarel

            3,6031812




            3,6031812























                1














                That frame is definitely not safe to ride anymore. While some steel frames can handle dents pretty well, that is some major damage in what seems to me an aluminium frame. The top tube seems both dented and bent, which likely has affected the steering of the bicycle and also introduces risk of the frame bending inwards under stress.



                I recommend you don't ride that anymore, start looking for a replacement and see if you can get the person responsible for that to fund it.






                share|improve this answer




























                  1














                  That frame is definitely not safe to ride anymore. While some steel frames can handle dents pretty well, that is some major damage in what seems to me an aluminium frame. The top tube seems both dented and bent, which likely has affected the steering of the bicycle and also introduces risk of the frame bending inwards under stress.



                  I recommend you don't ride that anymore, start looking for a replacement and see if you can get the person responsible for that to fund it.






                  share|improve this answer


























                    1












                    1








                    1







                    That frame is definitely not safe to ride anymore. While some steel frames can handle dents pretty well, that is some major damage in what seems to me an aluminium frame. The top tube seems both dented and bent, which likely has affected the steering of the bicycle and also introduces risk of the frame bending inwards under stress.



                    I recommend you don't ride that anymore, start looking for a replacement and see if you can get the person responsible for that to fund it.






                    share|improve this answer













                    That frame is definitely not safe to ride anymore. While some steel frames can handle dents pretty well, that is some major damage in what seems to me an aluminium frame. The top tube seems both dented and bent, which likely has affected the steering of the bicycle and also introduces risk of the frame bending inwards under stress.



                    I recommend you don't ride that anymore, start looking for a replacement and see if you can get the person responsible for that to fund it.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered 1 hour ago









                    Walto SalonenWalto Salonen

                    23916




                    23916























                        1














                        Unfortunately I think that level of damage with a big dent and buckled top tube will make the bike dangerous to ride. There's a chance that when a big bump or pothole is hit the top tube will fold and dump the rider face first into the road.



                        Additionally, the head tube probably is not aligned with the seat tube anymore, which means the wheels are misaligned which will negatively effect steering.






                        share|improve this answer




























                          1














                          Unfortunately I think that level of damage with a big dent and buckled top tube will make the bike dangerous to ride. There's a chance that when a big bump or pothole is hit the top tube will fold and dump the rider face first into the road.



                          Additionally, the head tube probably is not aligned with the seat tube anymore, which means the wheels are misaligned which will negatively effect steering.






                          share|improve this answer


























                            1












                            1








                            1







                            Unfortunately I think that level of damage with a big dent and buckled top tube will make the bike dangerous to ride. There's a chance that when a big bump or pothole is hit the top tube will fold and dump the rider face first into the road.



                            Additionally, the head tube probably is not aligned with the seat tube anymore, which means the wheels are misaligned which will negatively effect steering.






                            share|improve this answer













                            Unfortunately I think that level of damage with a big dent and buckled top tube will make the bike dangerous to ride. There's a chance that when a big bump or pothole is hit the top tube will fold and dump the rider face first into the road.



                            Additionally, the head tube probably is not aligned with the seat tube anymore, which means the wheels are misaligned which will negatively effect steering.







                            share|improve this answer












                            share|improve this answer



                            share|improve this answer










                            answered 1 hour ago









                            Argenti ApparatusArgenti Apparatus

                            33.5k23583




                            33.5k23583






















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