The distance between the outer cut outs on the mounting bracket is 82.5mm and the distance of the inner cut outs is 71.5mm.
(measured by hand so small tolerances are possible)
Are you reffering here to the two sets of holes on the bottom mounting bracket, as seen in the attached picture ?
Are these dimensions just made up, or are they standard to the standard mounting holes of 80 or 92 mm fans ?
The bolts on the bottom of the resevoir have a distance of 54mm.
What bolts on the bottom of the reservoir are you talking about ?
Oh, and thanks for the measurmenets.
If there is a technical dimensions plan, or manual ro something please let me know