Long-Chain Drivetrain

Assembly

Lag screws aka lag bolts 002.png · Commons ↗ Report photo

A derailleur drivetrain whose chain runs 2.5-3 chain-lengths from the boom-mounted crankset back to the rear wheel, managed by idler pulleys and guide tubes along the frame.

Direct parts	8
Total parts	11
Used in	1 assembly
Class	Assembly

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A derailleur drivetrain whose chain runs 2.5-3 chain-lengths from the boom-mounted crankset back to the rear wheel, managed by idler pulleys and guide tubes along the frame. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Long-Chain Drivetrain parts and their functions

8 top-level parts · 11 parts in total · full bill of materials below

Long-Chain Drivetrain parts diagram: 1 crankset, 2 long chain, 3 idler pulley, 4 chain tube, 5 cassette, 6 rear derailleur, 7 shifters, 8 pedals. 11 parts in 8 top-level items. — Long-Chain Drivetrain parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Crankset	1×	Boom-mounted crankset
2	Long Chain	1×	Triple-length chain
3	Idler Pulley	2×	Chain idlers
4	Chain Tube	2×	Chain guide tubes
5	Cassette	1×	Rear sprockets
6	Rear Derailleur	1×	Standard derailleur shifting the chain across the cassette; its spring also tensions the long lower chain run.
7	Shifters	1×	Bar-end shifters
8	Pedals	2×	Clipless pedals are near-universal: with feet ahead of the body, an unclipped foot can drop into the front wheel (leg suck).

3D model

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Build & assembly graph

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Bill of materials for Long-Chain Drivetrain

8 top-level lines · 8 rows shown · 11 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Crankset	recumbent-crankset	1×	1	·	part
2	Long Chain	recumbent-long-chain	1×	1	·	part
3	Idler Pulley	recumbent-idler-pulley	2×	2	·	part
4	Chain Tube	recumbent-chain-tube	2×	2	·	part
5	Cassette	recumbent-cassette	1×	1	·	part
6	Rear Derailleur	recumbent-rear-derailleur	1×	1	·	part
7	Shifters	recumbent-shifters	1×	1	·	part
8	Pedals	recumbent-pedals	2×	2	·	part

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Where the long-chain drivetrain is used

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

Bicycles & Cycling 1 Recumbent Bicycle

Used in 1 assembly

Recumbent Bicycle

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 $0.01–$2. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇮🇳Sundram Fasteners sundram.com ↗	Chennai, IN	Fasteners	10,000 pcs	3–5 wks
🇮🇳Lakshmi Precision Screws lpsindia.com ↗	Rohtak, IN	Fasteners	10,000 pcs	3–5 wks
🇨🇳Suzhou Escort escort-fastener.com ↗	Suzhou, CN	Fasteners	10,000 pcs	3–5 wks
🇨🇳Shanghai Tianbao tbfastener.com ↗	Shanghai, CN	Fasteners	10,000 pcs	3–5 wks
🇮🇳Sterling Tools sterlingtools.in ↗	Faridabad, IN	Fasteners	10,000 pcs	3–5 wks