King Tiger in the SMM Full-Reuenthal
Rework of transmission components and other parts
The operation of the Tiger and mechanical transmission predominantly occurs by pushing and pulling rods, which are linked to the individual mechanical components by clevis and ball joints.
The largest single units operate the food brake and track steering brake and the engine by the accelerator pedal. The transmission of the pedal movements at the bottom of the armor hull in front to the carburetors on top of the engine in the rear in the middle of the engine bay occurs via metal rods of various lengths and several types of joints.
The hollow brake cam which leads from the track brake unit on the left driver’s side to the brake unit on the right radio operator’s side to apply the right brake was severely corroded and needed to be remanufactured.
In the course of work it became evident that even though parts may look considerably attacked from outside, and metal may as well be heavily corroded in times, they could nonetheless be taken apart quite smoothly and bearings and threads were still ok. This facilitated the work to a great deal.
The track brake and locking brake unit are bolted to base profiles which are welded on the bottom of the armor hull. They were removed as entire units and the base profiles were detached.
The results of the restorations delight the eye:
Furthermore the gunner’s seat was reworked. The gunner directs the hydraulic turret movement by a foot pedal and can do the fine tuning with a hand wheel on the seat unit.
The hand wheel part can be pushed forward in order to facilitate slipping into the tight seat. The gunner also operates the vertical gun elevation drive with a hand wheel to his right at the gun.
The mechanical part of the seat unit was easy to rework but we grant a more comfortable sitting to the next one to take this seat by upholstering the seat pan.
Furthermore in this summer the new cooling fan units arrived. Their weight is appr. 150 kg each.
Interesting is the drive: Since the tanks were planned to be able to ford rivers the fan drive was not electrical but occurred via a prop shaft from the engine. A slipper clutch provided overload protection.
Did you know that the fan blades were hollow? It speaks for the accuracy of the constructors, and the restorer has done a very good job on them..
An external specialist has renewed the lubrication line system for the road wheel support arm lubrication spots. Looking at all the small radii, you can wonder how long the guy spent on his knees on the bottom of the armor hull.
As a climax of a successful summer season the break units are renewed.
They are located at the inner wall of the armor hull, sitting on big flanges to the final drives.
The sketch shows the mode of operation of the brakes:
The brake lining support discs are fixed while the drums are rotating. In a breaking action the two lining support discs are pressed against the rotating drums by an eccentric mechanism.
Summer season 2013