If I wasn't sure I would probably re-install in the stem, immobilize front wheel and "sprint" on them i.e. put as much force into them with my hands as I could. I am envisioning standing with wheel between legs not riding down road. When I broke my bars in the past they snapped off fairly easily. While not definitive this should at least be reassuring that they are solid.
I used them with a deda zero stem, with carbon paste and a torque wrench.
Both time Deda replaced them under warrenty but I've now gone back to using their zero 100 barsto save the trouble of this happening again.
I'll see if I can dig out the pics I took when it happened but interesting to know it's not just me that this happened to.
daj wrote:Were the bolts dry or greased when you used the torque wrench? 6 Nm on greased bolts is a lot more force than 6 Nm on dry bolts.
do you mean the bolt head or the swirling body? I´ve greased bolt's heads completly in some occasion and would be surprised if it makes a difference.. then again, Im up for advice if it is really necessary, and I bought second hand parts the came with the whole body of the bolts greased and used them with no issues
latman wrote:alloy bars can have problems too ! These were selcof using an FSA stem
I have EXACTLY the same damage on some mid-grade Ritchey aluminum bars, using a matched Ritchey stem. In other words, not lightweight, fragile gear. I think the bars weigh ~300 grams FWIW
Any comments on the Zero 100 bar? In the past I've seen people weren't finding it stiff enough, at least compared to the Newton bar. What's the view nowadays (ie. current generation Zero 100)?
Its a tough call. I had a really bad crash and my bike came down on the stem so the stem top cap bolt was bent and the top 5mm washer was snapped, anyhow the carbon bars were absolutely fine, just a light scuff at one end where they had worn through the tape but no cracks at all.... anyhow, I built a new frame up put the bars on, jumped up and down on them, twisted them everything, and they didn't fail.... I did one ride and all was fine, however in my mind i just kept thinking 'these have been through a severe impact.. what if....' so after this ride I replaced them and binned them. I think they will be fine but it depends if your head will be fine? My advice is to bin them - you will not think about it then and its much better to be safe... for what a couple of hundred quid?!
I took them to my lbs and had the Trek rep look at them. He said they were fine.
It is just clear coat or that textured paint stuff that gives it grip.
It would look pretty cool as well .
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