Prerotator
AssemblyEngine-driven spin-up system bringing the rotor to about 220 rpm before takeoff. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Prerotator parts and their functions
4 top-level parts · 4 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Flexible Shaft | 1× | Flexible drive shaft running from the engine up the mast. |
| 2 | Bendix Drive | 1× | Engaging pinion that meshes with the rotor ring gear only during spin-up. |
| 3 | Ring Gear | 1× | on rotor hub |
| 4 | Prerotator Clutch | 1× | Pneumatic or mechanical clutch taking drive from the engine. |
3D model
No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).
Build & assembly graph
expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly
shared across products
atomic part
related product
Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.
Bill of materials for Prerotator
4 top-level lines · 4 rows shown · 4 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Flexible Shaft | gyroplane-flex-shaft | 1× | 1 | · | part |
| 2 | Bendix Drive | gyroplane-bendix-drive | 1× | 1 | · | part |
| 3 | Ring Gear | gyroplane-ring-gear | 1× | 1 | · | part |
| 4 | Prerotator Clutch | gyroplane-prerotator-clutch | 1× | 1 | · | part |
Something wrong in this list? Report a problem with this BOM.
Where the prerotator is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
|
🇨🇳Foxconn
foxconn.com ↗
|
Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| flex.com ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| dixoninfo.com ↗ | Noida, IN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| bydelectronic.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| venture.com.sg ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |