They are not adjustable at all. I have mine on a 29er with plenty of room. I could measure tomorrow if needed
In which case it sounds like it'll be much too high with 26" wheels.
Vertical measurement from center of mounting hole to underside of rack bed is 390mm subtract 8 for mounting nuts and washers.
@Jon. started
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They are not adjustable at all. I have mine on a 29er with plenty of room.
I could measure tomorrow if needed