7D-066-005DS Class 66 789 GBRF 'British Rail 1948-1997' BR Blue Large Logo Diesel Locomotive - DCC Deluxe Sound Fitted Z-Gauge-Scale These became the A1 locomotive

These became the A1 locomotive class

rated at 4

Gearing arranged so locomotive can achieve a scale top speed of 100 mph

this change was not instantaneous

7D-066-005DS Class 66 789 GBRF 'British Rail 1948-1997' BR Blue Large Logo Diesel Locomotive - DCC Deluxe Sound Fitted Z-Gauge-Scale These became the A1 locomotiveExpected Delivery September 2026 (Subject to Change at Manufacturer's Discretion). Revised Specifications Electrical Operating front rear lights (independent operation for DCC, (switched for DC use) Includes day night mode) Operating side lights (where lighting cluster is applicable) Cab light (independent operation) Detailed cab with illuminated cab control panel Two motors (balanced & matched) for maximum pulling power and slow speed running control