Where this data comes from
iFlight's own block for the BOB57 2506 1500KV confirms the 38.2 g this page carried and adds 12N14P, 16x16 M3, 74.88 mOhm, a 5 mm shaft protruding 15 mm, 25.2 V and a 33.26 A / 817.5 W peak. Its Dimension line reads 31.7x19.6 mm where the XING2 2506's block - same 1500KV resistance, same peak current, same max watts, so electrically the same winding - reads 31.7x34.6 mm; the 15 mm difference is that motor's stated shaft protrusion, so the two pages appear to print the dimension with and without the shaft. Both are published as printed. iFlight's BOB57 product page carries a TEST REPORT image (2506 1500KV.png) headed XING2 2506 1500KV: its Dimension line (31.7x19.6 mm) is this page's, but its 12-row datasheet is the XING2 2506 1500KV report row for row. The rows are published on the XING2 2506 page, the motor the sheet names, and not repeated here
