BOMwiki the bill-of-materials encyclopedia
30,441,948 parts mapped · 192,925 items

This page is machine-generated and unverified (what this means). Treat details as provisional. If you know this hardware, weigh in or correct it directly with Edit.

Discussion History

V-Twin Engine

Assembly

Air-cooled 45-degree V-twin of about 1700 cc tuned for low-rpm torque and exhaust note. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

V-Twin Engine parts and their functions

11 top-level parts · 65 parts in total · full bill of materials below
V-Twin Engine parts diagram: 1 crankcase, 2 flywheel crankshaft, 3 piston, 4 fork-and-blade rod, 5 cylinder barrel, 6 cylinder head, 7 camshaft, 8 pushrod, 9 primary drive, 10 oil seal, 11 ball bearing. 65 parts in 11 top-level items.
V-Twin Engine parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Crankcase 1× Polished aluminium case carrying the flywheel assembly and oil pump.
2 Flywheel Crankshaft 1× Flywheel assembly
3 Piston 2× Large-bore cast piston sized for low-rpm torque.
4 Fork-and-Blade Rod 2× Fork-and-blade rods
5 Cylinder Barrel 2× Front and rear
6 Cylinder Head 4 parts 2× Air-cooled two-valve head with pushrod-operated overhead valves.
7 Camshaft 1× Single cam
8 Pushrod 4× Chrome pushrod in a polished tube transmitting cam lift to the rockers.
9 Primary Drive 3 parts 1× Chain primary connecting engine to gearbox, with the clutch and a manual gearbox.
10 Oil Seal 4× Spring-loaded rotary lip seal that keeps lubricant inside a housing and dirt out where a shaft passes through, sized to DIN 3760.
11 Ball Bearing 4× Deep-groove radial ball bearing.

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 V-Twin Engine

11 top-level lines · 25 rows shown · 65 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Crankcase chopper-motorcycle-crankcase 1× 1 · part
2 Flywheel Crankshaft chopper-motorcycle-crankshaft 1× 1 · part
3 Piston chopper-motorcycle-piston 2× 2 · part
4 Fork-and-Blade Rod chopper-motorcycle-conrod 2× 2 · part
5 Cylinder Barrel chopper-motorcycle-cylinder 2× 2 · part
6 Cylinder Head 4 parts chopper-motorcycle-cylinder-head 2× 2 7 assembly
6.1 Engine Valve chopper-motorcycle-valve-set 2× 4 · part
6.2 Valve Spring chopper-motorcycle-valve-spring 2× 4 · part
6.3 Rocker Arm chopper-motorcycle-rocker 2× 4 · part
6.4 Head Gasket chopper-motorcycle-head-gasket 1× 2 · part
7 Camshaft chopper-motorcycle-camshaft 1× 1 · part
8 Pushrod chopper-motorcycle-pushrod 4× 4 · part
9 Primary Drive 3 parts chopper-motorcycle-primary-drive 1× 1 30 assembly
9.1 Primary Chain chopper-motorcycle-primary-chain 1× 1 · part
9.2 Wet Clutch 3 parts chopper-motorcycle-clutch 1× 1 16 assembly
9.2.1 Clutch Plate chopper-motorcycle-clutch-plate 9× 9 · part
9.2.2 Clutch Basket chopper-motorcycle-clutch-basket 1× 1 · part
9.2.3 Coil Spring coil-spring 6× 6 · part
9.3 5-Speed Gearbox 4 parts chopper-motorcycle-gearbox 1× 1 13 assembly
9.3.1 Helical Gear Pair gear-pair 5× 5 · part
9.3.2 Shift Drum chopper-motorcycle-shift-drum 1× 1 · part
9.3.3 Shift Fork chopper-motorcycle-shift-fork 3× 3 · part
9.3.4 Ball Bearing ball-bearing 4× 4 · part
10 Oil Seal oil-seal 4× 4 · part
11 Ball Bearing ball-bearing 4× 4 · part

Where the v-twin engine is used

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

Used in 1 assembly

Chopper Motorcycle

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 $500–$50k. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Weichai Power
weichai.com ↗ 		Weifang, CN Diesel & power engines 50 units 12–16 wks
🇮🇳Cummins India
cumminsindia.com ↗ 		Pune, IN Diesel engines 50 units 12–16 wks
🇨🇳Yuchai
yuchai.com ↗ 		Yulin, CN Diesel engines 50 units 12–16 wks
🇮🇳Kirloskar Oil Engines
koel.co.in ↗ 		Pune, IN Diesel & gas engines 50 units 12–16 wks
🇮🇳Ashok Leyland
ashokleyland.com ↗ 		Chennai, IN Engines & commercial vehicles 50 units 12–16 wks