Originally Posted by
mkatz
Third, components listed on the Pacific-Cycles site vary from model to model. The disk brakes on all disk models appear to be mechanical rather than hydraulic.
I located where I got the idea that Birdy Disk was hydraulically actuated: from the Riese & Muller site:
https://www.r-m.de/en-gb/folding-bike/birdy/#
"Hydraulic disk brakes
The fastest route to a standstill.
The hydraulic Shimano Deore disk brakes deliver maximum performance, no matter what the weather. The large brake disks allow the braking effect to be distributed most effectively. They don’t produce rim wear and impress with their consistent braking performance."