I have a disk brake rigid fork. Unfortunately, there is a defect in the distance between the caliper screw holes. Thus, I cannot mount any disk brake calipers as I cannot placed both screws.

So, the solution is to use rim brake. As you can see on the picture below, there is a hole to mount rim brake. The fork is compatible to 29 inch wheels. I am using 26 inch wheel.

My question is, what type of rim brake I must use on this fork for a 26x1.90 wheel?

Thank you.