Leistonbmx Posted March 9, 2010 Report Share Posted March 9, 2010 Because they havn't bonded well? It didn't actually tear the weld though. Quote Link to comment Share on other sites More sharing options...
Shaun H Posted March 9, 2010 Report Share Posted March 9, 2010 It was bashed on a rock. It's a weak material. So I fail to see how it's bad welding. It's not a weak material, it's supposed to be strong and stiffer than normal alloy hence Koxx being able to use such thin tubing. yea i no he banged it on a rock. the weld should not tear away from the parent metal like that thou. im not going to go in to one about welding but thats a sign of a bad weld. Except the weld hasn't torn away, it's failed where the material meats the weld exactly as you'd expect (before the material gets thicker through the weld). Quote Link to comment Share on other sites More sharing options...
TOBY-E Posted March 9, 2010 Report Share Posted March 9, 2010 (edited) Because they havn't bonded well? It didn't actually tear the weld though. it has tore away beacause the weld has not burnt into the parent metal properly. sorry for takin ages to reply was trying to find a picture but couldent find one. Edited March 9, 2010 by TOBY-E Quote Link to comment Share on other sites More sharing options...
Shaun H Posted March 9, 2010 Report Share Posted March 9, 2010 (edited) yea i no he banged it on a rock. the weld should not tear away from the parent metal like that thou. im not going to go in to one about welding but thats a sign of a bad weld. it has tore away beacause the weld has not burnt into the parent metal properly. Yes "burnt" into the metal. You clearly know your welding Edited March 9, 2010 by Shaun H Quote Link to comment Share on other sites More sharing options...
TOBY-E Posted March 9, 2010 Report Share Posted March 9, 2010 (edited) Yes "burnt" into the metal. You clearly know your welding penetrated then. i was making it so people understood no need to get all picky. Edited March 9, 2010 by TOBY-E Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted March 9, 2010 Report Share Posted March 9, 2010 It's not a weak material, it's supposed to be strong and stiffer than normal alloy hence Koxx being able to use such thin tubing. Except the weld hasn't torn away, it's failed where the material meats the weld exactly as you'd expect (before the material gets thicker through the weld). It's supposed to be lighter and stiffer...both signs that they have sacrificed in other areas such as fatigue or UTS. It's failed in the HAZ, where almost all frames fail. it has tore away beacause the weld has not burnt into the parent metal properly. sorry for takin ages to reply was trying to find a picture but couldent find one. Yes "burnt" into the metal. You clearly know your welding My thoughts exactly....the weld has penetrated perfectly well. This is a case of a sharp impact causing a very thin-walled ( 1.6mm at best? ) stiff ( read brittle ) competition spec material when exposed to a pretty intense force. Quote Link to comment Share on other sites More sharing options...
Shaun H Posted March 9, 2010 Report Share Posted March 9, 2010 (edited) It's supposed to be lighter and stiffer...both signs that they have sacrificed in other areas such as fatigue or UTS. Read this. Edited March 9, 2010 by Shaun H Quote Link to comment Share on other sites More sharing options...
TOBY-E Posted March 9, 2010 Report Share Posted March 9, 2010 My thoughts exactly....the weld has penetrated perfectly well. This is a case of a sharp impact causing a very thin-walled ( 1.6mm at best? ) stiff ( read brittle ) competition spec material when exposed to a pretty intense force. im sorry i didnt really inspect the picture very well, i just assumed that was the case. i would be interested to now how thick the material is. Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted March 9, 2010 Report Share Posted March 9, 2010 Read this. I have That forms the basis of my point..... im sorry i didnt really inspect the picture very well, i just assumed that was the case. i would be interested to now how thick the material is. No problem dude.....I reckon it has to be around 1.5mm? A typical Deng is normally 1.9 I think on the down-tube...whereas Koxx are normally about 1.6-1.7 Quote Link to comment Share on other sites More sharing options...
TOBY-E Posted March 9, 2010 Report Share Posted March 9, 2010 CAUTION: K-ALONE must be handled with caution. It should be regarded as the ultimate “no compromise” weapon. It will not tolerate unnecessary shocks and badly timed riding. Equipment manufactured from his revolutionary material is intended for use by Elite competition and professional riders. thats ridiculous why are they selling them then. Quote Link to comment Share on other sites More sharing options...
craigjames Posted March 9, 2010 Report Share Posted March 9, 2010 Because as with most things intended for the elite and professionals in their minor sports, some of them still have to buy their frames and there will still be people willing to spend the obscene amount of money on the best available. Quote Link to comment Share on other sites More sharing options...
Toby Posted March 9, 2010 Author Report Share Posted March 9, 2010 Because as with most things intended for the elite and professionals in their minor sports, some of them still have to buy their frames and there will still be people willing to spend the obscene amount of money on the best available. Price of there frames are completely ridiculous if you ask me(though im guilty of buying the full bike ), pointless to buy one nowdays considering the selection of mod frames from rockman Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted March 9, 2010 Report Share Posted March 9, 2010 Price of there frames are completely ridiculous if you ask me(though im guilty of buying the full bike ), pointless to buy one nowdays considering the selection of mod frames from rockman To be fair....Koxx sell some quality well researched stuff that is well made and well finished, from what I've seen of Rockman I don't think I could say the same. But thats just going to start a whole new debate....the end of the matter is it's lightweight top notch shit...it just can't handle being bashed into pointy rocks. Either buy into something heavier, or learn to ride slightly with slightly better timing to quote the K-124 literature. Quote Link to comment Share on other sites More sharing options...
Toby Posted March 10, 2010 Author Report Share Posted March 10, 2010 (edited) To be fair....Koxx sell some quality well researched stuff that is well made and well finished, from what I've seen of Rockman I don't think I could say the same. But thats just going to start a whole new debate....the end of the matter is it's lightweight top notch shit...it just can't handle being bashed into pointy rocks. Either buy into something heavier, or learn to ride slightly with slightly better timing to quote the K-124 literature. i agree! im certainly not complaining about what happened its to be expected with what happened, everyone messes up once in a while even the pros, the downtube was in perfect condition till this happened just one of thoose things and yes generally the overall finnish and standard on the koxx frames are brilliant but is it really worth another £380 on top of buying a rockman, even though ive pointed out in my other topic my newly aquired rockman and the dissapointment of the paint finnish well researched yes and no, with the white sky i had lots of problems with rear end flex, they also made the snail cam tabs in to the frame which on the drive side lasted all of a few weeks the metal just started to squish, and the paint was awfull to clean just soaked up anything that touched it Edited March 10, 2010 by Toby Quote Link to comment Share on other sites More sharing options...
*Koxx hydroxx 2 Jack * Posted March 10, 2010 Report Share Posted March 10, 2010 (edited) ouch , not looking good. lasted well though Edited March 10, 2010 by *Koxx hydroxx 2 Jack * Quote Link to comment Share on other sites More sharing options...
Shaun H Posted March 10, 2010 Report Share Posted March 10, 2010 I have That forms the basis of my point..... Then read it again. It specifically mentions a HIGHER UTS (which you very rarely design to anyway and isn't that useful compared to yield). BTW being lighter and stiffer doesn't mean the material has to sacrifice quality in other areas. It often DOES but it's by no means guaranteed since there is a massive diversity of Al alloys available all with differing costs, strengths, stiffness and density. God knows what material K-alone actually is, although I imagine it's an exotic example of 6000 series, but to me it's more of a marketing ploy than a technological breakthrough. Quote Link to comment Share on other sites More sharing options...
Bionic Balls Posted March 12, 2010 Report Share Posted March 12, 2010 Do you still have the frame Toby? I could stick a bit under the SEM and have a flicker some time- would be interesting to know what K-ALONE really is.. Quote Link to comment Share on other sites More sharing options...
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