2006 Dennison Trailers Steam Steam · YD 1601

The most recent DVSA MOT recorded for this vehicle is dated 5 December 2022, when the vehicle was presented twice on the same day under the same date. The first test was recorded as a pass with no defects recorded, and the second test was recorded as a fail with a major defect concerning an offside front structural member. A major structural failure of this nature would normally prevent the vehicle from being driven on the public highway until rectified, and because there is no subsequent pass recorded, the buyer must verify independently that the remedial work has been completed and re-tested. Looking at the overall trend, the picture is of a historically well-maintained vehicle that has experienced two significant structural corrosion failures within a short period, indicating that whilst routine maintenance has been satisfactory, the underlying integrity of the chassis and load-bearing members is showing age-related deterioration that warrants serious scrutiny before purchase. Because the recorded mileage is unknown and there is insufficient data to compare mileage with the vehicle's age, it is not possible to draw firm conclusions about annual usage rates from the MOT record alone. However, given that this is a 1931 Fowler Steam vehicle, the expectation should be one of very low annual mileage, with the vehicle likely used only for heritage events, rallies, or short pleasure runs rather than regular transport. Such low usage has its own particular mechanical implications, including standing corrosion on ferrous components, drying and cracking of rubber seals and gaskets, degradation of lubricants through lack of circulation, and potential seizing of rarely moved mechanical linkages. The recorded test intervals and the absence of any recorded mileage between tests are consistent with low-use classic vehicle operation rather than the accumulation patterns seen on a daily-driven car. A prospective buyer of a steam-powered vehicle of this age and type should approach the inspection with particular attention to the specific failure items recorded. The two major defects both concern structural members with load-restraining devices attached, one on the offside front and one on the centre rear cross member near the third axle. These items relate to the integrity of the chassis frame and any associated towing or securing points, and excessive corrosion in these locations would have implications for structural rigidity, safe operation, and the ability of the vehicle to safely haul or carry any load. During a physical inspection, the buyer should closely examine all main chassis members, outriggers, and cross members for signs of advanced corrosion, cracking, deformation, or previous welded repairs, paying particular attention to the front offside and rear centre areas highlighted in the failure history. A competent classic vehicle engineer should ideally assess the chassis on a ramp, and where any doubt exists, ultrasonic thickness measurements of the structural members would be prudent. Beyond the structural concerns, the buyer should carry out a thorough age- and usage-appropriate inspection covering the items that do not always appear on an MOT but are critical on a steam vehicle. The boiler itself should be examined by a competent boiler inspector, with documentary evidence sought of any hydraulic pressure test, steam test, or insurance-required inspection carried out within the standard validity period. Tyres should be checked for sidewall perishing and cracking, which is common on low-mileage classics and is not always flagged at MOT. Brake components, if fitted, should be inspected for corrosion and binding calipers after standing, and all working parts should be operated to confirm free movement. Hydraulic or lubricating fluids should be considered time-expired regardless of mileage, and the condition of any 12-volt battery, electrical insulation, steam-rated gaskets, boiler lagging, water gauges, safety valves, and firebox components should all be verified. A physical test drive or steam-up should be conducted, with the buyer listening for any unusual steam leaks, water pump noises, mechanical clunks from the suspension or running gear, and ensuring that pressure readings are stable and the regulator operates smoothly through its full range.