Product overview
The DYS BE4114 is a brushless outrunner motor for multicopter propulsion, including quadcopter and hexacopter applications. Rated at 350 rpm/V, it supports 5–6S LiPo batteries and weighs 150 g. Its housing measures 46 mm in diameter by 31 mm in length, enclosing a stator with a 41 mm diameter and 14 mm length; the shaft diameter is 4.0 mm. DYS describes the BE-series construction as using 0.2 mm Kawasaki 1200 # silicon steel, 40UH magnets, Japanese NSK bearings and a CNC-machined shell.
Maximum continuous ratings are 11.5 A and 212 W. Load data for the BE4114-10 (350KV) with a 15X5.5 propeller gives 1670 g of pull at 11.5 A and 212.75 W, paired with 18.5 V and a six-cell LiPo. Another point gives 2100 g at 14.5 A and 321.9 W, paired with 22.2 V and a five-cell LiPo. These voltage and cell-count combinations are inconsistent, leaving the actual battery conditions unresolved. The 1670 g point slightly exceeds the continuous power rating, while the 2100 g point exceeds both continuous ratings. Neither has a specified operating duration.
Specifications
| Specification | Value & conditions |
|---|---|
| Motor KV | 350 rpm/V |
| Configuration | NPThe configuration is published only as NP, without further explanation. |
| Stator diameter | 41 mm |
| Stator length | 14 mm |
| Shaft diameter | 4.0 mm |
| Motor dimensions | Φ46 × 31 mmPublished as diameter × length. |
| Weight | 150 g |
| LiPo cell count | 5–6SBattery cell range. |
| Maximum continuous current | 11.5 APublished maximum continuous rating. |
| Maximum continuous power | 212 WPublished maximum continuous rating; distinct from the individual load-table power entries. |
| Internal resistance | 0.126; unit unspecified |
| Published pull | 1670 gDescription-level pull figure; the load table separately reports configuration-dependent values. |
| 22.2 V load point 1 | Current 2.4 A; pull 600 g; power 53.28 W; EEP 11.26%BE4114-10 (350KV), at the table's published 22.2 V with LiPo ×5 / 15X5.5. Preserve this pairing pending confirmation; EEP is headed %. |
| 22.2 V load point 2 | Current 3 A; pull 700 g; power 66.6 W; EEP 10.51%Continuation of the published 22.2 V, LiPo ×5 / 15X5.5 block; confirm that configuration and the EEP definition. |
| 22.2 V load point 3 | Current 3.5 A; pull 800 g; power 77.7 W; EEP 10.30%Continuation of the published 22.2 V, LiPo ×5 / 15X5.5 block; confirm that configuration and the EEP definition. |
| 22.2 V load point 4 | Current 4 A; pull 900 g; power 88.8 W; EEP 10.14%Continuation of the published 22.2 V, LiPo ×5 / 15X5.5 block; confirm that configuration and the EEP definition. |
| 22.2 V load point 5 | Current 4.9 A; pull 1000 g; power 108.78 W; EEP 9.19%Continuation of the published 22.2 V, LiPo ×5 / 15X5.5 block; confirm that configuration and the EEP definition. |
| 22.2 V load point 6 | Current 5.7 A; pull 1100 g; power 126.54 W; EEP 8.69%Continuation of the published 22.2 V, LiPo ×5 / 15X5.5 block; confirm that configuration and the EEP definition. |
| 22.2 V load point 7 | Current 14.5 A; pull 2100 g; power 321.9 W; EEP 6.52%Continuation of the published 22.2 V, LiPo ×5 / 15X5.5 block. This point exceeds the separately stated maximum continuous current and power. |
| 18.5 V load point 1 | Current 2.9 A; pull 600 g; power 53.65 W; EEP 11.18%Second table block, published as 18.5 V with LiPo ×6 / 15X5.5. Preserve this pairing pending confirmation; EEP is headed %. |
| 18.5 V load point 2 | Current 3.6 A; pull 700 g; power 66.6 W; EEP 10.51%Continuation of the published 18.5 V, LiPo ×6 / 15X5.5 block; confirm that configuration and the EEP definition. |
| 18.5 V load point 3 | Current 4.3 A; pull 800 g; power 79.55 W; EEP 10.06%Continuation of the published 18.5 V, LiPo ×6 / 15X5.5 block; confirm that configuration and the EEP definition. |
| 18.5 V load point 4 | Current 5.1 A; pull 900 g; power 94.35 W; EEP 9.54%Continuation of the published 18.5 V, LiPo ×6 / 15X5.5 block; confirm that configuration and the EEP definition. |
| 18.5 V load point 5 | Current 5.8 A; pull 1000 g; power 107.3 W; EEP 9.32%Continuation of the published 18.5 V, LiPo ×6 / 15X5.5 block; confirm that configuration and the EEP definition. |
| 18.5 V load point 6 | Current 6.5 A; pull 1100 g; power 120.25 W; EEP 9.15%Continuation of the published 18.5 V, LiPo ×6 / 15X5.5 block; confirm that configuration and the EEP definition. |
| 18.5 V load point 7 | Current 11.5 A; pull 1670 g; power 212.75 W; EEP 7.85%Continuation of the published 18.5 V, LiPo ×6 / 15X5.5 block. Table power is 212.75 W, while the separate maximum continuous specification is 212 W. |
| Purpose and architecture | DYS BE4114 brushless motor; BE-series outrunner intended for multicoptersManufacturer's BE-series architecture description, included on the BE4114 page. |
| Magnetic materials | Kawasaki 1200 # silicon steel, 0.2 mm; 40UH magnetsManufacturer's BE-series construction description; confirm its application to the selected BE4114 configuration. |
| Bearings and shell construction | Japanese NSK bearings; CNC-machined shell; balancing testManufacturer's construction and process claims. |
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