Now the importance of the Mamba and other squabble will come to light!
I’m not going near the Unimog Chassis that has been done!
My first question is which RG-31 are you using as a reference? There are actually two RG-31s.
Remember the Mamba was designed & built by TFM (Terrorist Fighting Machinery, an apt name)
The first Mamba 2X4 and the Mamba 4X4 (Mk2 whatever the correct name) as used by the SANDF were build by two different companies, TFM built the first and IIRC Mechem the second.
The first RG-31 Nyala was TFM taking their Mamba 2X4, upgrading it and making it 4X4 with a few other changes. The Basic specs easily prove this:
Mamba APC & RG-31 Nyala Dimensions
Length 5460 mm
Width 2205 mm
Height 2495 mm
The RG-31 Nyala was obviously marketed overseas by TFM. The Canadians bought some and used them in Bosnia, Ethiopia and Afghanistan. These vehicles are referred to as RG-31 Nyala Mine Protected Vehicle (MPV). See:
http://army.ca/wiki/index.php/RG-31_...tected_Vehicle
The second RG-31 is the one as built by OMC (Reumech/Land Systems/Alvis whatever they are calling themselves these days) an
d although based on the TFM’s RG-31 Nyala it seems to have been redesigned and is both bigger and heavier.
The Nyala part seems to have been dropped, but not by the Canadians! In any case the Canadians refer to this vehicle as RG-31 Nyala Armoured Patrol Vehicle (APV). See:
http://army.ca/wiki/index.php/Armoured_Patrol_Vehicle. Obviously as the RG-31 (not the Nyala) has been modified for each users specs, each user uses different designations;
Canada – RG-31 Nyala
US – RG-31 Cougar etc…
Thus you can see that although the RG-31 stems from the RG-31 Nyala there are in fact two totally different RG-31s! (Once again Wiki jumps the shark / Pokes the cow / gets it WRONG!!!!!)
So if you are using the first RG-31 Nyala as a reference, then it is the same base vehicle as the Mamba and thus dimensions are the same. This leaves the Reva weighting a lot more and being bigger, so not a copy.
If you are using the second RG-31 as a reference, then (except for the Unimog Chassis) you are correct, but IIRC the Reva appeared on the scene before the RG-31 and that makes the RG-31 a copy of the Reva, which is also not true.
All these vehicles draw their designs from the Casspir, which was designed and built by TFM in any case.