T-84 US_AAF A rear castor-wheel jack was

A rear castor-wheel jack was used to raise the rear spade off the ground if the gun needed to be traversed more than allowed by the 16° allowed by the mount proper

The final 102 F-14As were delivered with improved TF30-P-414A engines

width: 63mm

To absorb the effects of the recoil when using the artillery piece

T-84 US_AAF A rear castor-wheel jack wasThe T 84 is a Ukrainian main battle tank, a development of the Soviet T 80 main battle tank. It was first built in 1994 and entered service in the Ukrainian Armed Forces in 1999. The T 84 is based on the diesel engined T 80 version, the T 80UD. Its high performance opposed piston engine makes it one of the fastest MBTs in the world, with a power to weight ratio of about 26 horsepower per tonne (19 kW t). The T 84 Oplot is an advanced version