Trying to install this Ortlieb Quick Rack L and feeling lost about why attaching the mount didn’t work. Can anyone tell me what I’m doing wrong?
I’m using the supplied m5 bolt with a plastic fitting that goes over it, and attaching to the fork eyelet.
I put together the stack of stuff on the bolt as shown in the manual (a plastic fitting that the rack sits on, plastic washer and metal washer) and screwed it in, then switched to the torque wrench at 2.5nm to tighten as instructed. The bolt just kept tightening and the plastic washer broke, and the other plastic part has been squashed and warped.
Maybe I’m an idiot, and I only just got the torque wrench recently, but I’m not sure I understand where the resistance is supposed to come from if not from these plastic components sitting on the bolt? If they get crushed at 2.5nm then what was I supposed to do?
Looking at the instructions again I’m unsure if I was supposed to use the plastic washer for m5, it might be that this only for the m6 option, but have the same issue with the plastic fitting when using just metal washers
Another thing to mention is that one of the supplied bolts was significantly bent when I got it, which I don’t love as a load bearing piece, but I straightened it a bit and it screwed in fine. I’m thinking of emailing support for a replacement, but might need to ask for more than just that part based on the above
Thanks
:-/
by Medium_Person_01
6 Comments
I have a very hard time believing you crushed and split that washer at 2.5 Nm. And when you say the “other plastic part has been squashed and warped” do you mean the stand off cylinder?
I’m not at the point where I’m willing to question your technique, but please show us a photo of your wrench and the setting it was on.
I think you messed up using your torque wrench. 2.5 Nm is a tiny amount of torque; those parts look like they had a lot more than that applied to them.
had the same problem – ended up with loctite and “go with feeling” instead of 2.5nm. hold well last few months. to be funnier on my second bike it holds up no question ask and everything up to spec torque included
It’s probably the torque wrench.
I’d look into your torque wrench, 2,5Nm is really not a lot of force so in order to crush the plastic I’d guess you went beyond that. But that’s just my opinion, I know I installed mine without one bc my wrench doesn’t go below 5Nm. I screwed lightly and put a bit of loctite.
It would be good to see what kind of torque wrench you have. 2.5nm is barely any force and I wouldn’t trust a cheap wrench to be accurate that low. The washers probably crushed at higher torque, but the good news it that they were likely chosen so they would save the threads, particularly on aluminum frames, by doing just what they did.