Lesser racks are often rated higher, but a higher rating doesn't make them 
stronger, it just means the ratings are less conservative. Tubus racks are 
great...I have used them, I totally trust them, but they are much thinner 
than Nitto racks (lighter tubing), and they are not triangulated at the 
joints, where racks break. We know exactly where a Tubus rack is likely to 
break if it breaks, which is unlikely in the first place...because we have 
one here, off a demo bike, broken. That doesn't mean it's defective, but it 
did break.
Last week I was thinking hey let's get some Nitto tig versions of the same 
racks. Nitto sez: The tubing's too thin to TIG, it would have to be much 
thicker. Even tho EVERY TIG'd rear rack is made with thinner-walled tubes 
than Nitto.

I am sure all rack makers test their racks. In 2013 they'd be insane not 
to, but they aren't tested to the same conservative standards. About 12 
years ago I asked Nitto to make a 220g drop bar, knowing there were several 
220g or lighter drops out there, and naturally theirs would be the 
strongest. They said they couldn't make one that passed their tests, and I 
said what about the ________, ________, and __________---they're made in 
Taiwan and you can beat that, right? And NITTO said (naming names 
privately, telling me not to go public with that) all those bars failed 
their tests quickly.

Nitto also says---and this may scare you---that even a handlebar that's not 
crashed should be retired after ten years, because aluminum doesn't last 
like steel does. Now, this doesn't mean that your 35 year old Cinelli #66 
is a better bar than Nitto, it just means Nitto is more conservative.

Rack capacities (back to them) are funny things, because --- you can put 70 
pounds on a rear rack, but it's held there by tiny braze-ons, and that's a 
lot of stress even when everything's tight. Bolts often come loose, and 
when a bolt is even slightly loose, the stresses go haywire. The tight 
bolt's eyelet is overstressed, and  if the bolt works out it imposes a lot 
more leverage on that one dropout. Loose bolts break racks just like heavy 
loads do, but they leave no trace, like stabbing somebody with an icycle 
(sorry, making a point). Check your bolts! And...stay away from Nitto racks 
if you know yourself enough to know that you'll likely overload them and 
you never check your bolts. 

Sometimes somebody says how come the Nitto M12 is so much lighter than the 
Mini you sell? It's much thinner, and is made to be a handlebar bag 
support, not an actual front rack for carrying stuff. It's a good bag 
support, but it's  not a rack-rack.



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