4×4S.ORGTHE REGISTRY NAMED MODEL · 1990–95
NAMED MODELUnited Kingdom

RB44 braking rectification (1990–95)

The modification programme: £940,000 of mandated changes before design acceptance in May 1990, withdrawal from June to November 1992, full withdrawal in December 1993 after 37 of 57 vehicles pulled left braking at 35 mph, and re-acceptance in August 1995.

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BASE VEHICLERB44 (1988–93)BUILT BYReynolds BoughtonIN SERVICE1990–95PRODUCTIONThe whole fleetLAYOUT4 wheels

The record

The cause was the combination of permanent four-wheel drive, the rotating mass of the Perkins Phaser and front half-shafts of unequal length, which produced torque steer under heavy braking. The dual-circuit vacuum-servo drum brakes were upgraded and the hydraulic actuation made consistent. Reynolds Boughton paid £250,000 of the rectification; the Ministry of Defence about £1.5 million, and £1.7 million more to store the fleet meanwhile.

Specification

MANUFACTURED1990–95
ENGINEPerkins Phaser diesel, 107 hpPerkins Phaser
PRODUCTION RUNThe whole fleet
COUNTRY OF ORIGINUnited Kingdom
STATUSre-accepted into service in August 1995
RECORD KINDNamed model
MODEL LINERB44
FAMILYRB44
WHEELS4
BODY STYLEcargo

Catalogue fields describe the vehicle's structure and body as this registry records it. They are not certified factory measurements, and no performance figures are published here.

Variants & colours

Base model variants

Factory colours

  • Deep Bronze Green

Codes on hover. Hex values are representative approximations of period paint unless a source states a measured value.

AI rendering impression

An AI rendering impression starts from a 3D model of this vehicle, which an image model then paints into a scene. It is an artist's impression of the type, made to give a feel for the vehicle in its element — not a photograph, and not a record of any particular vehicle.

Proportions, fittings, markings, colours and the setting can all drift from the original in the process. For the vehicle's actual details, rely on the specification, the photographs and the cited sources on this page.

Sources

  1. 1Reynolds Boughton RB44 ↗Think Defence · accessed 2026-09-23SOURCE

Registry record updated 2026-09-23 · status: researched