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Discussion History

Primary Drive

Assembly

Chain primary connecting engine to gearbox, with the clutch and a manual gearbox. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Primary Drive parts and their functions

3 top-level parts · 30 parts in total · full bill of materials below
Primary Drive parts diagram: 1 primary chain, 2 wet clutch, 3 5-speed gearbox. 30 parts in 3 top-level items.
Primary Drive parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Primary Chain 1× Wide chain carrying engine torque to the clutch in the primary case.
2 Wet Clutch 3 parts 1× Multi-plate wet clutch sized for the high torque of a large V-twin.
3 5-Speed Gearbox 4 parts 1× 5-speed

3D model

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Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly shared across products atomic part related product

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Bill of materials for Primary Drive

3 top-level lines · 10 rows shown · 30 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Primary Chain chopper-motorcycle-primary-chain 1× 1 · part
2 Wet Clutch 3 parts chopper-motorcycle-clutch 1× 1 16 assembly
2.1 Clutch Plate chopper-motorcycle-clutch-plate 9× 9 · part
2.2 Clutch Basket chopper-motorcycle-clutch-basket 1× 1 · part
2.3 Coil Spring coil-spring 6× 6 · part
3 5-Speed Gearbox 4 parts chopper-motorcycle-gearbox 1× 1 13 assembly
3.1 Helical Gear Pair gear-pair 5× 5 · part
3.2 Shift Drum chopper-motorcycle-shift-drum 1× 1 · part
3.3 Shift Fork chopper-motorcycle-shift-fork 3× 3 · part
3.4 Ball Bearing ball-bearing 4× 4 · part

Where the primary drive is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

V-Twin Engine

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
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Flex (Singapore)
flex.com ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks
🇮🇳Dixon Technologies
dixoninfo.com ↗ 		Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
🇨🇳BYD Electronics
bydelectronic.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks