I am gathering ideas for my first frame build, which is going to be beginning of next year at the Bicycle Academy. I want to go there with a clear vision in mind and all the choice of components already sorted out.
The idea is to build a gravel bike with a Columbus steel tubeset and disc brakes. The first two question that come to my mind are:
You can get Columbus chainstays which are specifically shaped for brazing on flat mount caliper mounts - SLF114OV450SX, SLF114OV450DX for the driveside.
Alternatively, Paragon make dropouts with flat mount bits you can braze onto the NDS chainstay (DR2071 in steel for QR rear end - Ceeway sell them). Or you could use Paragon Polydrops with a flat mount insert.
Or you can make it standard and then braze some flat mount caliper mounts directly onto and into the chainstay. It's a lot of work but I think it looks best. This was my recent effort:
That looks gorgeous, congratulations!
I don't think it's something I can achieve in my first build though.
I can't find the chainstay you recommend on the Columbus website here: https://www.columbustubi.com/eng/4_4_6.htm
Where did you read that they are shaped for brazing on flat mount caliper?
Following up on @PhilDAS's recommendation as well, I am guessing a dropout with brake mount is the easiest way to go. In that case, should I still look at flat mounts? Would it be weird to have flat mount brakes on the front fork and post mount on the rear dropouts?
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