Hi Diana,
Another lesson please. What is the difference between a SIIB and a 101. . . Again I apologise for my stupidity.
Cheers,
Mick
Hi Mick
We'll ignore the lack of clarity above.
There are actually three production Land Rover forward control models.
Series IIa 109 Forward Control production commenced for the 1962 model
The SIIA is basically a SIIA Oz military chassis with a second "C" section chassis sat on top with the front protruding forward of the dumbirons, a standard 4 cyl firewall with snub nose bodywork to hold the radiator and cover the firewall and steering. The original diffs were exactly the same SIAa Rover assemblies which proved insufficient for the additional weight, so an ENV replaced initially the rear only but shortly after both front and rear.
The engine is in the usual position and the 2.6 litre six was added in 1963 four years before the normal control LR.
Gearbox is the same housing and main gearbox gearsets, but has a longer mainshaft and drives an all helical gear low ratio transfer box (IIRC 1.54:1) internally it looks similar to an LT230 with 3 gears on the intermediate shaft cluster. It is operated by a complicated mechanical remote shift mechanism.
There is debate whether the Oz military 109 chassis or the SIIA FC chassis was designed first although it is possible they were designed at the same time.
With the high centre of gravity and standard SIIA track they were prone to falling over on side slopes and they were very slow because of the low ratio box. About 5000 were produced
Series IIB 110 (109 3/4") production started for the 1966 model
The SIIB is 3/4" longer wheelbase to clear the 6cyl sump and 4"wider track. The front axle has an anti-roll bar and the rear assembly is spring over with higher chassis mounts and the springs set further out from the chassis. The gear selector was a simple replicator bar over the top of the engine.
The last South African build SIIB had Salisbury axle assemblies front and rear.
These were more stable but still slow on the highway.
The 101 was initially prototyped in the late 60s early 70s using the SIIB gearbox, 6cly engine and ENV axle assemblies. These were soon replaced with the Range Rover V8 engine, LT95 Range Rover transmission and Salisbury axle assemblies. The chassis is basically straight rails with long parabolic leaf springs.
