Key elements from this schematic:
- It's an "M" size: 410mm Reach, 621.9mm Stack, 588.3mm TT and 490mm ST;
- Boost hub spacing: 110x15mm front and 148x12mm rear;
- 2.4 inch tire clearance;
- T47 inboard BB (86mm);
- 68.5º HTA, 74º STA;
- 1112.2mm wheelbase, 455mm chainstays;
- frame/downtube storage, front bottle mounted on the frame, above the door;
- there's a reference to "SRAM 42T", which I assume is the max chainring size, but not sure if it's for the regular or wide crank...
From the shape of this frame, it seems to me it's an adapted 32er convertion/streched version of the Tantan GR267/Mondince FM376 700c gravel frame, also considering the same solution for the front bottle mounted on the frame, above the door...
UPDATE: the frame is an M, not an L.
That makes it a very long bike, if I look at the SPcycle geometry sheet, the Small is longer than most 54cm frames, approximately 20mm longer on top tube alone, and Stack is crazy high too.
I cannot figure how so many experienced chinese frame makers can miss a geometry so often. It is crazy to see this amount of frames that have a key figure so wrong. I mean, in doubt just copy paste the best selling frame geometry of the big brands and that’s all!