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Add a 5mm shim to left side.
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Tubus Logo Rack Skewed to Right
05-09-23, 04:44 PM
#1
Newbie
Thread Starter
Tubus Logo Rack Skewed to Right
My new Tubus Logo Evo Rack is skewed about 5 mm to the right. Left side has 17mm clearance from tire, right side has 22mm with the 2.35" tires I'm running.
Adding a 5mm shim seems like the easiest option, but I worry about the shear stresses on the m5 bolt for for loaded touring. I'm not easy on equipment, and reliability is important to me.
Doing nothing seems okay too, it just bugs me that my load won't be centered and balanced.
I can confirm that the problem is the rack, not the bike frame - I've previously had another unbranded rack and a Tubus Cargo Classic on this bike (Kona Sutra) that were nicely centered.
See post #2 below for pictures.
Adding a 5mm shim seems like the easiest option, but I worry about the shear stresses on the m5 bolt for for loaded touring. I'm not easy on equipment, and reliability is important to me.
Doing nothing seems okay too, it just bugs me that my load won't be centered and balanced.
I can confirm that the problem is the rack, not the bike frame - I've previously had another unbranded rack and a Tubus Cargo Classic on this bike (Kona Sutra) that were nicely centered.
See post #2 below for pictures.
05-09-23, 09:40 PM
#3
Senior Member
the right support stays appear to either be a tad short, or the mounting bolt hole at the base is drilled too high.
i say that because the rack platform looks to be slightly tilted to the right.
in that case adding a shim or bending the rack probably won't fix the issue.
i doubt it would be a safe option to dremel the left mount hole to lower the left leg.
shouldn't be a problem mechanically, just optically.
you don't see a rear rack while you're riding, so you can ignore it.
if a front rack, would drive some people crazy.
maybe remove the rack and take some precise measurements of leg lengths and hole positions.
then contact the seller or the manufacturer to exchange the defective product if you can't live with it.
i say that because the rack platform looks to be slightly tilted to the right.
in that case adding a shim or bending the rack probably won't fix the issue.
i doubt it would be a safe option to dremel the left mount hole to lower the left leg.
shouldn't be a problem mechanically, just optically.
you don't see a rear rack while you're riding, so you can ignore it.
if a front rack, would drive some people crazy.
maybe remove the rack and take some precise measurements of leg lengths and hole positions.
then contact the seller or the manufacturer to exchange the defective product if you can't live with it.
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05-10-23, 05:24 AM
#4
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My Tubus Ergo front rack is off by about the same amount. Perturbed me greatly for about a week and then I forgot about it.
I agree with Saddlesores on all points he made.
That looks like the EVO version, thus trying to modify the hole on the bottom where it mounts to the dropout would probably not work. I did that on a different brand of rack, but the part where I drilled new holes was a piece of flat plate.
I agree with Saddlesores on all points he made.
That looks like the EVO version, thus trying to modify the hole on the bottom where it mounts to the dropout would probably not work. I did that on a different brand of rack, but the part where I drilled new holes was a piece of flat plate.
05-10-23, 06:21 AM
#5
Senior Member
As that is a rear rack, the skewing is merely a cosmetic issue. With a rear rack you can load 20kg on one side only and once you set off you won't notice it at all. Or rather, the next time you notice it is when you stop and dismount.
That sort of "imbalance" doesn't even matter with a front rack. However with a front rack the cosmetic side is in your face the whole time, which can get irritating. I had that issue with my old LHT, but when I transferred the same Tubus Tara to my current Disc Trucker, the issue disappeared. Yay!
That sort of "imbalance" doesn't even matter with a front rack. However with a front rack the cosmetic side is in your face the whole time, which can get irritating. I had that issue with my old LHT, but when I transferred the same Tubus Tara to my current Disc Trucker, the issue disappeared. Yay!
05-10-23, 07:19 AM
#6
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Another option would be to crash on the right side and see if that would bend the rack towards the left. Of course you'd then have to deal with a bent derailer hanger, and possibly a messed up derailer. So all in all, I'd look where I was riding and ignore the rack.
05-10-23, 03:13 PM
#7
Newbie
Thread Starter
the right support stays appear to either be a tad short, or the mounting bolt hole at the base is drilled too high.
i say that because the rack platform looks to be slightly tilted to the right.
in that case adding a shim or bending the rack probably won't fix the issue.
i doubt it would be a safe option to dremel the left mount hole to lower the left leg.
shouldn't be a problem mechanically, just optically.
you don't see a rear rack while you're riding, so you can ignore it.
if a front rack, would drive some people crazy.
maybe remove the rack and take some precise measurements of leg lengths and hole positions.
then contact the seller or the manufacturer to exchange the defective product if you can't live with it.
i say that because the rack platform looks to be slightly tilted to the right.
in that case adding a shim or bending the rack probably won't fix the issue.
i doubt it would be a safe option to dremel the left mount hole to lower the left leg.
shouldn't be a problem mechanically, just optically.
you don't see a rear rack while you're riding, so you can ignore it.
if a front rack, would drive some people crazy.
maybe remove the rack and take some precise measurements of leg lengths and hole positions.
then contact the seller or the manufacturer to exchange the defective product if you can't live with it.
My idea to try and bend the rack would make the platform even less level. I tried adding a 5mm shim, and it fixes the side-to-side tire clearance, but of course the platform is still unlevel.
My Tubus Ergo front rack is off by about the same amount. Perturbed me greatly for about a week and then I forgot about it.
I agree with Saddlesores on all points he made.
That looks like the EVO version, thus trying to modify the hole on the bottom where it mounts to the dropout would probably not work. I did that on a different brand of rack, but the part where I drilled new holes was a piece of flat plate.
I agree with Saddlesores on all points he made.
That looks like the EVO version, thus trying to modify the hole on the bottom where it mounts to the dropout would probably not work. I did that on a different brand of rack, but the part where I drilled new holes was a piece of flat plate.
I think I'm just going to mount it regularly, without shims, and try to forget about it.
This option is intriguing. I normally try to crash on the left side to protect the derailleur. I will keep this in mind next time I crash.
05-14-23, 05:31 AM
#8
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I ended up bending my Tubus racks to "improve" how everything lined up.
At some point their going to to get moved to another bike and I assume I'll be adjusting them again.
At some point their going to to get moved to another bike and I assume I'll be adjusting them again.
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05-21-23, 11:20 PM
#9
hello
I also forced my Tubus rack to center properly. I laid my bike on its side, propped it over a couple of 2x4’s, and applied my weight on the rack. I’ve done this with several other racks over the years…
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