I’ve got a Tarmac SL7 with a D shaped seat post. Using the Garmin mount with one of the wider/smaller bands - just stuff that came in the Varia RTL515 box. The Garmin mount does not ‘mate’ closely to the seat post, so if you want to get OCD then its unacceptable, however it doesn’t move and I ride on really bad roads.
None of them quite fit my Tarmac SL7 correctly for the same reason so I use some gorilla double side tape on the closest fitting mount just to keep it from moving and then the regular wrap around band and haven’t had any issues in the last two years.
I’ve got an Orbea Orca Aero (2019 maybe?) and have used Varia on it with no issues. It doesn’t fit perfectly but does the job. Turns out I haven’t taken that many photos with it installed but this is the best I could find
Nice, yeah I never had any problems with it falling off, the only thing that would bug me sometimes is it would tilt around to one side or the other until I locked it down with just a small piece of double side tape on the back.
so infrequently that I just deal with it. And usually it requires my leg to hit the radar to cause it to point slightly left or right, instead of directly pointed backwards. Basically only during an awkward and bumbling bad bike mounting or dismounting, or bumping into it in the garage.
I have similar seat post on my Cinelli. I’ve used the above mentioned KOM post mount, but I really like the seat mount better. BupLabs have some really nice designs that actually fit into certain seats (Fizik Specialized, Snycros, and Trek). I can still use a small seat rail mounted tool kit too (Silca Matone). Bike Mounts - Bup Labs
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