I built a road wheelset around the HED Belgium C2 Plus rims, wanting to get 
the plumpest tubeless road tires on my road bike.  It turns out I went too 
wide, both in the tire and in the rim, and it just was not going to work.  
I took a half-step down in rim width to the normal HED Belgium C2 on the 
road bike.  The happy consequence was my Hillborne got a nice wheel 
upgrade, and now sports Compass Barlow Pass Extralights, tubeless, and now 
weighs 24 pounds.

Tubeless Hillborne <https://www.flickr.com/photos/45758191@N04/27428634516>

In the process of wanting to run really fat tires on a roadish bike, I 
decided I wanted cantilever brakes that would open WIDE, so I picked up a 
set of Shimano CX70 brakes here on the list, only to find how hard it is to 
actually QR them.  It's quite difficult to get the cable head out of it's 
little receptacle.  I suspect that might have been part of why the seller 
sold them.  Anyway, I stared and thought, and cogitated, deliberated, and 
ruminated, and came up with a solution.  First, here's a photo of the cable 
end we're talking about:

CX70 brake <https://www.flickr.com/photos/45758191@N04/27428641486>

The issue is that the cylindrical head fits into the ROUND recess in the 
front part of the brake arm, and there's a LONG finger on the back part.  
Un-modified you have to have enough slack to get the cable part all the way 
around that back finger, so the cylindrical head can pop out.  

My modification involved filing the front face of that cylinder.  I tapered 
the non-load bearing end quite a bit so now you can push the cable straight 
down (in-line with the cable itself) and the cylindrical head just pops out 
of that round hole, and frees right up.  

Close-up of the mod <https://www.flickr.com/photos/45758191@N04/27428643846>

So, if you are like me and bought CX70s for the express purpose of being 
able to remove fat-tired wheels without deflating a tire, and you are like 
me and dislike how hard it is to QR your CX70s, then consider this mod.  

Bill Lindsay
El Cerrito, CA

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