Hello, my friends, this thread, although 6 weeks late, was and has been created as a centre point of discussion and information seeing as there are many threads on the TTD with no place to share this information without going through multiple places. This thread shall focus on the Loggim Project and resulting Tank Technology Demonstrator with some information and discussion allowed of the Optimum Project as well seeing as they are so closely connected with most of the technologies of the Loggim shared with the Optimum.
Feel free to discuss about these topics, remember that there is no stupid question only a stupid answer, except if you ask if the TTD is a modified Centurion, then you are guaranteed to have stupid stuff said to you. Keep things on topic, many of the last South African designed tanks are heavily intertwined.
This thread is still a WIP, so feel free to point out any errors or share information that could be added to the thread for better quality of information and to make it easier to read and bug report for future and current issues.
Remember people:
DO NOT UPLOAD ANY CLASSIFIED INFORMATION WHAT SO EVER!
You do not want to be banned; noir do any of us want this forum to closed and possibly deleted. You have been warned…
I have not included the history because I am lazy.
Check out tank encyclopaedia for a good overview of the history.
TTD Technical Specifications
Crew:
4 Crew: Driver, Loader, Gunner, and Commander
Dimensions:
Length (mm): 9 880
Width (mm): 3 620
Height (mm): 2 990
Weight:
58 300 kg
Mobility
Speed:
71km/h on road
35km/h cross country (presumably with some bundu bashing)
Engine:
1234hp (920Kw) @ 1200rpm
4400Nm @ 1500prm
21.16hp/tonne
I have read that because the engine proved to be less than satisfactory from the testing of the TTD, work was starting on a 1500hp engine, but this was dropped when the whole future tank program was cancelled.
Transmission:
Automatic
4 Forward Gears
2 Reverse Gears
It is also commonly noted across many places on the internet that the transmission was design and rated to go up to 1500hp and like ~5000Nm of torque at like 2600rpm, I cannot remember exactly what the numbers were but very close to mine.
Braking:
Stop in 6,8 seconds from 56km/h to 0km/h
Ground Pressure:
0,93kg/cm2
Weapons Systems
Turret:
Rotate 360° in less than 10 seconds (>36°/s)
Side notes on this. The technologies of this program were also reused by the Rooikats, so it is possible that we could get the same turret rotation speed on the TTD as the Rooikat Mk.1D or a bit slower due to a heavier turret.
Main Armament:
GT3 – 105mm (52 calibre) rifled barrel (for testing purposes)
or
GT6 – 120mm (52 calibre) smoothbore (tested to go on just before the program was cancelled)
Ammunition:
54 x 105mm Rounds
Unknown Amount of 120mm ammunition but definitely 16 rounds in the bustle carousel)
105mm:
Fin Mk.1 (M111 APFSDS)
Fin Mk.2 (M9718 APFSDS)
Fin Mk.3 (M426 APFSDS) (already in use by
M456 HEAT-FS
M9210 HE (unknown if fin stabilised, likely spin stabilised)
M156 HESH
M416 Smoke
Speculated 120mm:
M322 APFSDS
M339 HEAT-FS MP
I don’t know any other Israeli 120mm rounds that were used during the late 80s to mid-90s that would happen to be exported for testing besides the rounds the Merkava 3 already uses in War Thunder.
Secondary armament:
MG4 coaxial 7.62mm Machine Gun (2000 rounds belt bin)
MG4 roof mounted 7.62 Machine Gun (200 round box) [Likely would have mounted similar to the Olifant Mk.1A/B]
[Sighting Systems
I did use Gemini 3 to help summarise this list a bit and make it for both sight types, if there are inaccuracies with the data of any sights just let me know and provide a source if you can (to also link to add legitimacy to the forum). Thank you
Commander
- CS-60N panoramic sight (standard TTD sight)
*Limits: 360° horizontal, -15° +20° vertical
- Magnification: x3-x10
- Commander override is available
- Stabilized: Yes, Two-plane
- Night vision device: Yes
- Notes: Baseline panoramic sight for the South African Tank Technology Demonstrator (TTD).
- AA-CS-300D panoramic day sight (same as on Rooikats ZA-35 and ZA-HVM)
- Limits: 360° horizontal, -15° +75° vertical
- Magnification: x3-x10
- Target acquisition range: 10km
- Commander override is available
- Stabilized: Yes, Two-plane
- CS-65 panoramic sight
*Limits: 360° horizontal, -15° +20° vertical
- Magnification: x3-x10
- Commander override is available
- Stabilized: Yes, Two-plane
- Night vision device: Yes
- CS-72 panoramic sight
*Limits: 360° horizontal, -15° +20° vertical
- Magnification: x3-x10
- Commander override is available
- Stabilized: Yes, Two-plane
- Night vision device: Yes
- CS-75 panoramic sight (used in Olifant Mk.2)
- Limits: 360° horizontal, -15° +20° vertical
- Magnification: x3-x10
- Commander override is available
- Stabilized: Yes, Two-plane
- Night vision device: Yes
- Thermal imaging: Yes
- Note: This sight existed long after the Loggim project was cancelled but had it produced a tank that enter service like 2005, it likely would have had basically this sight, with maybe more zoom.
Gunner
- GS-60 Gunner Sight (Standard TTD sight)
- Magnification: x3–x8
- Stabilized: Yes, Two-plane
- Laser Rangefinder: Yes (Neodymium-YAG)
- Night Vision Device: Yes (120-element Thermal Imager)
- Notes: Baseline for the TTD fire control system.
- GS-65 Gunner Sight
- Magnification: x3–x10 (variable or stepped)
- Stabilized: Yes, Two-plane
- Laser Rangefinder: Yes
- Night Vision Device: Yes
- Thermal Imaging: Yes
- Notes: Marketed as an upgrade for the Olifant Mk.1B to match the CS-65 commander sight.
- GS-72 Gunner Sight (Used on Rooikat 105)
- Magnification: x3–x8
- Stabilized: Yes, Two-plane
- Laser Rangefinder: Yes
- Night Vision Device: Yes
- Thermal Imaging: Yes (TDR7 or similar)
- Notes: Integrated with the digital fire control system for fire-on-the-move capability.
- GS-75 Gunner Sight (Used on Olifant Mk.2)
- Magnification: x3–x10
- Stabilized: Yes, Two-plane
- Laser Rangefinder: Yes
- Night Vision Device: Yes
- Thermal Imaging: Yes (High-resolution 2nd Gen)
- Note: This sight existed long after the Loggim project was cancelled but had it produced a tank that enter service like 2005, it likely would have had basically this sight, with maybe more zoom.
Armour
Domestic internal NERA: Capable of stopping APFSDS fired from a T62 line-of-sight
Possible addon composite armour; likely the same as the mounted on the Olifant Optimum, this would only be for the production tank
Spall Liner
I can confirm that the spall liner exists. I have touched it. When I saw it, I think it was about 7mm or so thick. The spall liner in front of the gunner was a Prussian Blue, same colour as what most blueprints are.
Linked Threads
Reumech TTD (Loggim) GT6 120 - Left in the dust
TTD wrong thermal generation - #40 by ExecutivOutcomes
South African vehicles that could be made more accurate
Yes, I include my first shitty forum on South African vehicles, has some stuff worth mentioning
Additional Images
Soon to be added