Originally Posted by
maxants33
110mm (although I actually use a sturmey archer 2-speed kick-back hub, which is 116mm, but fits fine....)
Of course - it's a good point to bring that up, as I'm assuming bikes with sliding dropouts will be 135mm+
I am unaware of any rim brake single speed gravel/cx frames with 110mm dropouts.
Some options below that are rim brake but wider dropout spacing...
This is 120mm dropout and fits a 44mm tire and uses canti brakes-
https://wabicycles.com/products/wabi...pr_seq=uniform
This is 120mm dropout and fits a 45mm tire, but caliper brake-
https://www.statebicycle.com/collect...-set-navy-gold
This is 130mm dropout and fits a 50mm tire and uses canti brakes-
https://blackmtncycles.com/product-c.../monstercross/
This is 130mm dropout and fits 27.5x2.4 tire with canti brake-
https://crustbikes.com/collections/f...ts/florida-man
Best of luck finding a 110mm dropout single speed CX/gravel frame with canti brake mounts. A Bianchi San Jose is 130mm spacing, fwiw.