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RC plane outrunners (2212, 2216, 2826, 3508, 4110, 6374) and car inrunners (540 / 3650, 4274, 1/8 scale)
What are the dimensions of a 540 brushless motor? · Modern device · basis: Maker spec pages (Castle Creations, Hobbywing, SunnySky, iFlight, Flipsky); T-Motor via retailer copies (marked)
Also called: 540 brushless motor dimensions, 3650 motor size, 4274 motor dimensions, 2212 motor dimensions, rc car motor mount holes
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 12 in table
Notes
- Car 540-class (36 mm can): Ø36 × about 52–53 mm, mounts with 2 × M3 on 25 mm (Castle states it). Shafts differ by model: 3.175 mm (Hobbywing 3650) or 5 mm (Castle 1410, XeRun 3652) — check yours.
- 1/8 scale: Hobbywing 4274 Ø42 × 74, 4268 Ø42 × 68, Ø5 shaft; Castle 1515 Ø40 (41.4 over fins) × 75.4 with 3 and 4 holes at 25 mm.
- Plane outrunners ship with a cross ('X') mount; its hole spacing appears only in maker drawings, so it is not listed. SunnySky X2212 Ø27.5 × 30 with a 3.175 shaft and 5 mm prop adapter.
- Robotics / e-skate 6374: Ø63.4 × 77 body, Ø8 shaft with a 3 × 1.5 key (Flipsky); mount screws M4, pattern not published.
- The 3650 and 4274 envelopes use the 2 × M3 on 25 pattern Castle publishes for 36 mm cans; Hobbywing does not state its pattern, so check before drilling.
RC plane outrunners (2212, 2216, 2826, 3508, 4110, 6374) and car… size chart
| motor | type | dia (mm) | length (mm) | shaft (mm) | mount | weight (g) |
|---|---|---|---|---|---|---|
| Castle 1410 (540 class) | car inrunner | 36 | 52.7 | 5 × 21 | 2 × M3 on 25 | 237 |
| Hobbywing QuicRun 3650 G2 | car inrunner | 36 | 52.8 | 3.175 | None | 190 |
| Hobbywing XeRun 3652 SD G2 | car inrunner | 36 | 52.5 / 56 | 5 × 15 | None | 192 |
| Hobbywing EZRun 4274 | 1/8 car | 42 | 74 | 5 | None | 418 |
| Hobbywing EZRun 4268 | 1/8 car | 42 | 68 | 5 | None | 343 |
| Castle 1515 | 1/8 car | 40 (41.4 fins) | 75.4 | 5 × 20 | 3 and 4 holes at 25 | None |
| SunnySky X2212 | plane outrunner | 27.5 | 30 | 3.175 | cross mount | 57 |
| SunnySky X2216 V3 | plane outrunner | 27.7 | 34 | None | cross mount | 68 |
| T-Motor AT2826 long shaft | plane outrunner | 35.2 | 69.5 | 5 | None | 175 |
| T-Motor MN3508 (retailer copy) | multirotor | 41.8 | 26.5 | 4 | None | 82 |
| SunnySky X4110S | outrunner | 48.2 | 30.5 | 4 | None | 149 |
| Flipsky 6374 | robotics / e-skate | 63.4 | 77 (102 overall) | 8 keyed | M4 | 860 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Castle Creations (spec via dealer) | 1410 3800 kV | web | Publisher's page; dimensions are facts |
| Hobbywing | QuicRun 3650 SD G2 | web | Publisher's page; dimensions are facts |
| Hobbywing | EZRun 4274 / 4268 | web | Publisher's page; dimensions are facts |
| Hobbywing Direct | XeRun 3652 SD G2 | web | Publisher's page; dimensions are facts |
| RC Visions (Castle spec) | Castle 1515 | web | Publisher's page; dimensions are facts |
| FlyingTech (SunnySky spec) | SunnySky X2212 | web | Publisher's page; dimensions are facts |
| BuddyRC (SunnySky spec) | SunnySky X2216 V3 | web | Publisher's page; dimensions are facts |
| LIGPOWER (T-Motor spec) | AT2826 long shaft | web | Publisher's page; dimensions are facts |
| GetFPV (T-Motor spec copy) | MN3508 | web | Publisher's page; dimensions are facts |
| ReadyMadeRC (SunnySky spec) | X4110S | web | Publisher's page; dimensions are facts |
Free files
★ Free files 5 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| car-motor-36x52.7-castle-1410 | 36 mm car motor envelope (Castle 1410): Ø36 × 52.7, Ø5 × 21 shaft, 2 × M3 on 25 | STEP · STL |
| car-motor-36x52.8-3650 | 3650 car motor envelope: Ø36 × 52.8, Ø3.175 shaft (hole pattern assumed 2 × M3 on 25, see notes) | STEP · STL |
| car-motor-42x74-4274 | 4274 1/8 car motor envelope: Ø42 × 74, Ø5 shaft (hole pattern assumed 2 × M3 on 25, see notes) | STEP · STL |
| car-motor-plate-2xm3-25 | Car motor plate: 2 × M3 on 25 mm, slotted ±3 mm for gear mesh | STEP · STL |
| outrunner-2212-envelope | 2212 plane outrunner envelope (SunnySky X2212): Ø27.5 × 30, Ø3.175 shaft | STEP · STL |
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Questions
What are 540 motor mounting holes?
2 × M3 on 25 mm (Castle 1410); the can is Ø36 mm.