QBP uses Maxway TW,
Bike Friday is in Oregon FWIW their OSATA was batch made in the winter..
Those are ready made.. adjustable in length and height..
My Touring bike had rim brakes , since I toured in the northern Summers ,
the Rim brakes were fine.. 70's to 90's..
I only recently bought a disc brake wheeled bike ..
this one ..
....