For 280 motor the shaft diameter is roughly 2mm.
8T pinion for small 280 motor:
upgradeparts-common-smallpinion8t-280motor
8T pinion for small 280 motor v2 (slightly different diameters and teeth shape):
upgradeparts-common-smallpinion8t-280motor-v2
8T pinion for small 280 motor v3 (again, slightly different diameters and teeth shape, shaft hole half closed):
upgradeparts-common-smallpinion8t-280motor-v3
8T pinion for small 280 motor v4 (reinforced – this version is particularly suitable for the Taiyo Jet Fighter):
upgradeparts-common-smallpinion8t-280motor-v6
You want to use something stronger than PLA for this. We recommend PETG over PLA.
These small pinions are often in use by smaller RC cars such as the Taiyos/Tycos/Nikkos:
Keep in mind, you must use superglue when inserting the pinion into the shaft.
