1990 ROYAL ENFIELD 0.5L PETROL

MOT outcome The latest MOT (19 June 2024) was a pass, but it recorded two non‑excessive defects: the direction‑indicator flash rate is above the legal limit (over‑flashing) and the drive chain was noted as worn, with two split links fitted – one of those links is wider than it should be. Both items are advisory rather than outright failures, but they highlight parts that need attention. Recurring pattern All previous MOTs (2020‑2023) were clean, so the only recurring issue is the drive‑chain wear noted this year. The over‑flashing indicators have not appeared before, suggesting a new electrical fault rather than a long‑standing problem. Trend The defect record is stable in the sense that no new safety‑critical failures have emerged over the past five years. However, the appearance of chain wear this year indicates a slight deterioration in the drivetrain’s consumables. The trend is therefore mildly worsening – the chain is now approaching the limit of acceptable wear. Mileage versus age At just 1 941 mi after 36 years the bike averages roughly 54 mi per year, which is exceptionally low. Such low utilisation can mean the engine and transmission have seen little mechanical wear, but it also raises the possibility of prolonged periods of storage. Long‑term sitting can lead to corrosion of the chain, seals, and rubber components, and can cause the chain to stiffen or develop split links, as now observed.