eccc whippet Posted January 25, 2017 Posted January 25, 2017 after watching a mechanic in a bike shop trying to loosen a crank and BB in a bike shop i am surprised there arent more broken cranshafts and carbon frames...at the time i wasnt concerned about the customers crank...i was more concerned the frame was gona break from the pounding with the hammer.
King_Crispy Posted January 25, 2017 Posted January 25, 2017 after watching a mechanic in a bike shop trying to loosen a crank and BB in a bike shop i am surprised there arent more broken cranshafts and carbon frames...at the time i wasnt concerned about the customers crank...i was more concerned the frame was gona break from the pounding with the hammer.I've seen it too.Which area are you in?
arendoog Posted January 25, 2017 Posted January 25, 2017 I am not that surprised If you feel the weight of it .I am worried thou because i use the same crank ans weigh a 100kg
Butterbean Posted January 25, 2017 Posted January 25, 2017 I weigh 110kgs so you should be fine. I've never seen this kinda issue, and while no expert, I doubt it could be from normal fatigue or wear and tear. It's either a problem during manufacture, or mistreatment previously.
Pure Savage Posted January 25, 2017 Posted January 25, 2017 after watching a mechanic in a bike shop trying to loosen a crank and BB in a bike shop i am surprised there arent more broken cranshafts and carbon frames...at the time i wasnt concerned about the customers crank...i was more concerned the frame was gona break from the pounding with the hammer. Not sure what bike shop you go to, but my one only uses love and persuasion on my bike
supertorro Posted January 25, 2017 Posted January 25, 2017 after watching a mechanic in a bike shop trying to loosen a crank and BB in a bike shop i am surprised there arent more broken cranshafts and carbon frames...at the time i wasnt concerned about the customers crank...i was more concerned the frame was gona break from the pounding with the hammer.it's called percussive maintenance and is a perfectly valid technique
Aurora Posted January 25, 2017 Posted January 25, 2017 I did that to a Dura-Ace 7800 a few years ago doing hill sprints. Coolheat replaced it under warranty.
NotSoBigBen Posted January 25, 2017 Posted January 25, 2017 Not sure what bike shop you go to, but my one only uses love and persuasion on my bike While you're there
Skinnyone Posted January 25, 2017 Posted January 25, 2017 Not sure what bike shop you go to, but my one only uses love and persuasion on my bike I love to use my power of persuasion too... If in doubt give it a clout,the more you doubt, the harder you clout... This case is a rare one, like I said I have seen crank failures like this twice in 12 or so years - since the Hollowtech II cranksets came out. If you look at the number of failures globally vs the number of cranks fitted to bikes then it is a VERY small ratio...Not a reason to doubt or steer clear of Shimano cranks.
shaper Posted January 25, 2017 Posted January 25, 2017 I love to use my power of persuasion too... If in doubt give it a clout,the more you doubt, the harder you clout... This case is a rare one, like I said I have seen crank failures like this twice in 12 or so years - since the Hollowtech II cranksets came out. If you look at the number of failures globally vs the number of cranks fitted to bikes then it is a VERY small ratio...Not a reason to doubt or steer clear of Shimano cranks.^^^ This
Wannabe Posted January 25, 2017 Posted January 25, 2017 I love to use my power of persuasion too... If in doubt give it a clout,the more you doubt, the harder you clout... This case is a rare one, like I said I have seen crank failures like this twice in 12 or so years - since the Hollowtech II cranksets came out. If you look at the number of failures globally vs the number of cranks fitted to bikes then it is a VERY small ratio...Not a reason to doubt or steer clear of Shimano cranks. ^^^ This Is it the same with the Kuga's?
Recommended Posts
Archived
This topic is now archived and is closed to further replies.