De Rosa Merak

De Rosa x Vision integrated handlebar, the Merak page's "HandleBar Geometry" sheet (https://derosa.it/app/uploads/2026/09/Merak_Bar_Width.pdf): sold as width x stem "380x90, 400x90, 380x100, 400x100, 420x100, 380x110, 400x110, 420x110, 380x120, 400x120, 420x120, 380x130, 400x130, 420x130, 380x140, 400x140, 420x140" ("Stem/Hb Reach"), i.e. stem lengths 90/100/110/120/130/140 mm; reach 75 mm; drop 115 mm; shifter width printed "38 mm, 40 mm, 42 mm" (read as 380/400/420, the widths the pairs use); bar width at the drops 410/430/450 mm. The sheet prints no stem angle. See the bar file de-rosa-merak-vision-cockpit.json.

Not published, so null: seat tube length, standover, trail, stock stem and bar per size; the page names no stock tyre (tyre_width_mm null). Column letters from the drawing beside the table (read only for its letters, not stored; white lines on a transparent ground): ET is drawn horizontal at head tube top height from the seat tube line to the head tube line (top_tube_effective); HS head tube; SA seat angle; HA head angle; G BB drop; RC rear centre, BB to rear axle (chainstay); FC front centre; WB wheelbase; F fork length, axle to crown, 371 on every size (not in the schema); OT fork offset; STACK and REACH drawn from the BB to the top of the head tube (stack_datum null: no words about a cover). The drawing also letters ST (seat tube) and prints R350,00 arcs, but the table has no ST column, so seat_tube_length is null; the Size column (425 to 565) is the maker's size name. The page's model name carries the year 2026 (model_year 2026). The "70" page (https://derosa.it/model/70/, fetched once, HTTP 200) prints this same table's numbers under mislabelled headers ("B (cm)" 50.8, "C (cm)" 405, ...) without a head angle, so the 70 has no file of its own. Source: html table (official De Rosa model page, section "Geometries": the table in the page markup; fetched 2026-10-20, HTTP 200)