Two-Stroke Construction

Inside the big two-stroke: engine structure, crankshaft types, main/guide/thrust bearings, chain drive and charge-air coolers — with inspection and failure points.

5 Topics In this Sub-topic

Two-Stroke Construction Topics

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01 Two-Stroke Structure — Frame, Tie Rods, Liner, Piston & Crosshead Eight parts from bedplate to block, tie rods holding the sandwich in compression, each shaped by the forces it must survive. Beginner · 11 min read · 5 sections 02 Marine Crankshafts — Builds, Bedplate, Chocks & Alignment Why a 300-tonne shaft comes in pieces, what steel it sleeps on, and the fourteen reasons alignment fails. Intermediate · 10 min read · 5 sections 03 Engine Bearings — Renewal, Crosshead to Thrust Block How oscillating bearings keep an oil film, how a main bearing is renewed in 22 steps, and how tilting pads carry the propeller. Intermediate · 11 min read · 6 sections 04 Chain Drive & Camshaft — Timing Transmission What the chain drives, how rollers and pins wear, and the inspection that catches a jumping chain early. Beginner · 6 min read · 3 sections 05 Stuffing Box — Sealing Rings, Clearances & Running-In Three ring sets guard the border between scavenge air and crankcase oil — and three clearances decide whether the piston seals or the engine breathes fire. Intermediate · 9 min read · 4 sections