The Crossley TDD4 and
6 trolley buses
The TDD6 3 axle, 6 wheel, trolley buses were introduced in 1935 and the TDD4 2 axle, 4 wheel, model in 1936. The last TDD6s were built in 1940 and TDD4s in 1942.
All were fitted with double deck bodies. The TDD4 was built on a modified Mancunian bus chassis.
Chassis numbers were:
92301 to 92317 - TDD6. 17 built.
92401 to 92497 -TDD4. 97 built
BODY STYLES
A Manchester Corporation Crossley bodied TDD4
The Crossley bodied TDD6 supplied to Belfast.
The trolley buses were supplied to the following operators-
| Operator | TDD4 | TDD6 |
| Manchester | 68 | 12 |
| Hull | 20 | - |
| Ashton-under-Lyne | 9 | 3 |
| Belfast | - | 2 |
77 of the TDD4s had Crossley bodies using Metro-Cammell framework but the 20 supplied to Hull were by Craven.
16 of the TDD6s had Crossley bodies using Metro-Cammell framework, the remaining one, one of two supplied to Belfast, was by Harkness.
The TDD4 chassis was priced at £1150.
Manchester withdrew their last TDD4 in September 1960 and their last TDD6 in April 1956.
SPECIFICATION
MV202FW (TDD4) or MV206A2 (TDD6)
95 hp (TDD6)
TDD6 - tons 224 pounds (9246 kg)