# Starling 2 Max V4/C29: current assembly STEP / CAD availability

Source: https://forum.modalai.com/topic/5529/starling-2-max-v4-c29-current-assembly-step-cad-availability
Category: Design Reviews and 3D Models (https://forum.modalai.com/category/39/design-reviews-and-3d-models)
Posted: 2026-10-30 12:29:11 UTC by Elvis Bicharri
Replies: 0 · Views: 18

## Elvis Bicharri · 2026-10-30 12:29:11 UTC

Hi ModalAI team,

I recently purchased the Starling 2 Max with C29 option a few days ago. While I await delivery I am investigating retrofitting propeller guards and additional payloads, and so I need some details about the airframe.

Could you confirm which assembly STEP or mechanical drawings apply to the **Starling 2 Max V4 frame with the C29 sensor configuration**?

I downloaded the complete **CAD Models** folder from FileCloud. It contains seven models, and the newest Starling 2 Max assembly is:

`D0012-4-V3-C28-M36-T7-K0-Starling2-Max-V3-20260317.step`

The other two Max files are labelled Hardware Revision 2 and HW Rev1, with internal STEP export dates in September and June 2024 respectively. I could not find an assembly identified as V4/C29.

Your [replacement-parts page](https://www.modalai.com/products/starling-2-max-replacement-parts) lists the V4 frame **M10001459**, motor **M10001367** and feet **M10001460**, and says the V3/V4 frames are not interchangeable.

I also found this earlier report of the V3 CAD having smaller-motor legs than the delivered drone, with physical legs marked 1460 versus 868B in the CAD:
https://forum.modalai.com/topic/5364/hardware-starling-2-max-landing-legs-cad-different-from-drone

Could you please clarify:

1. Is a current **V4/C29 assembly STEP** available, and where can it be downloaded?
2. If there is no complete model, can you provide drawings for the changed V4 frame/motor/feet interfaces and the **fitted C29 ToF module and mounting plastics**, including their assembly positions?
3. Which parts of the V3 model, particularly the **top bracket and arm geometry**, remain dimensionally valid for V4? Are there any approved payload attachment points or load limits for the top bracket?

The aim is to check a removable mount and propeller-bumper clearances without assuming that the older assembly matches the current hardware. A model including the installed battery envelopes and propeller sweep/height would be helpful too.

Thanks.