It is the summer of 2021 as I write, just as the bicycle shortage caused by the pandemic supply chain disruption is beginning to ease. Built bikes are becoming available again. One of them is Marinbikes' versions of the steel mixte / stepthrough frame, the Larkspur 1 and 2. Unlike the Soma and similar mixte frames, it accepts mountain bike tires. It comes with 584 / 27.5 / 650b wheels and 2.35 inch / 60mm tires.
At first I was annoyed that there are no 29er MTB mixte models, but it occurred to me that the large tires raise the bike about an inch higher than my 35mm touring tires. So the height comes out about the same. 622 / 2 = 311mm rim radius + 35mm tire height = 346mm wheel radius. 584 / 2 = 292mm rim radius + 60mm tire height = 352mm wheel radius. 352 - 346 = 6mm. So the wheel radius of the 27.5" wheels is 6mm larger than the 29" wheels. 6mm ~ 1/4" = not enough to worry about.
Last edited by Jack Kessler; 07-11-21 at 07:36 PM.