ebenvn Posted December 30, 2011 Posted December 30, 2011 Hi guys, So while washing my bike today I noticed (for the first time) a small dent in the frame - just below the cage. (it almost looks like a sigarette burn would on plastic... - if that makes sense )There doesnt seem to be any cracking around it. Its the first time I notice it, but I dont think its new... Is it safe to ride like this or what would you suggest???
MTB_Roadie Posted December 30, 2011 Posted December 30, 2011 Carbon dont dent like that, looks like a chip
ebenvn Posted December 30, 2011 Author Posted December 30, 2011 Thx MTB_Roadie. You reckon its safe to keep using it?
Capricorn Posted December 30, 2011 Posted December 30, 2011 (edited) I dont think it's an issue. There's a lot of surrounding material to take the normal frame stresses for that upper section of the downtube. Also, the frames are built to withstand stresses that have fairly large safety margins added to them resulting in a lot more material than is required to withstand assumed worst case stresses. You dont have to be OCD about checkign the spot either. Just do your normal frame checks when u wash the bike, and that's pretty much business as usual. njoi the ride! Edited December 30, 2011 by Capricorn
ebenvn Posted December 30, 2011 Author Posted December 30, 2011 Thx Capricorn, hope your right! (maybe I should use it as an excuse to get a new frame..... )
no calves Posted December 31, 2011 Posted December 31, 2011 giants use to do that as a result of the bottlecage bosses sitting to low on the seat tube so your bottle wil rest on the downtube. safe to use i would say! im still racing my frame
CAAD4 Posted December 31, 2011 Posted December 31, 2011 I would lay off the Cytomax or whatever you are putting in your bottles. If it's eating your frame can you imagine what it's doing to your stomache...
CAAD4 Posted December 31, 2011 Posted December 31, 2011 I would lay off the Cytomax or whatever you are putting in your bottles. If it's eating your frame can you imagine what it's doing to your stomache...
no calves Posted December 31, 2011 Posted December 31, 2011 fit 2 empty bottles in your cages and see if they touch your frame. i think you will find the rar bottle is the culprit
TNT1 Posted December 31, 2011 Posted December 31, 2011 it almost looks like a sigarette burn would on plastic... - Stop smoking while riding?
no calves Posted December 31, 2011 Posted December 31, 2011 Carbon dont dent like that, looks like a chip No chip, that is a mark from somthing rubbing/grinding away on that surface. most probbably a bottle
kosmonooit Posted December 31, 2011 Posted December 31, 2011 Looks like the result of an impact with something - that's underneath the tube? Stones can shoot out from the front tyre at quite a rate, once one caught my toe through my mtb shoe: eina!
johannrissik Posted December 31, 2011 Posted December 31, 2011 Hi guys, So while washing my bike today I noticed (for the first time) a small dent in the frame - just below the cage. (it almost looks like a sigarette burn would on plastic... - if that makes sense )There doesnt seem to be any cracking around it. Its the first time I notice it, but I dont think its new... Is it safe to ride like this or what would you suggest??? In a nutshell, yes. The question is when.
no calves Posted December 31, 2011 Posted December 31, 2011 Looks like the result of an impact with something - that's underneath the tube? Stones can shoot out from the front tyre at quite a rate, once one caught my toe through my mtb shoe: eina! look at tha chainblade in pic 1. the spot is just below bottle cage bossed on downtube
javadude Posted December 31, 2011 Posted December 31, 2011 I'm with no calves on this one. In fact, there was a thread a couple of years ago about this very issue and what bottle cages were prone to causing this.
Mada3400 Posted December 31, 2011 Posted December 31, 2011 check the material you are using for your bottlecage, you do a jump or wateva and the metal bottlecage hits the frame and thats what might happen ( thats if the chip is where i think it is)
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