Out of the box the T-72 is way over sprung so the track and roadwheels don't deflect much over obstacles, The OE adjustment only has 2 positions, medium and high, with medium being the stock position..
I removed all the swingarms and drilled a 3rd hole in the hull for the tail of the spring, giving the choice of low, medium, and high. After some trial and error, I found the suspension works best with the springs set as follows;
#1 (front) springs in the stock medium setting.
#2-3-4-5 springs in the new low setting.
#6 (rear) springs in the high setting.
Set up this way I find that it can now go over smaller obstacles such as 1/2" rebar very smoothly without bouncing or rocking over it, and the track will conform to uneven surfaces rather than bridge low spots. On larger hard edge obstacles like a 2X2 it transitions through the balance point in a much smoother rocking motion, rather than an abrupt pivot.
3rd hole,
I also painted all contact surfaces of the swingarms, roadwheels, return rollers, and idler wheels with CRC dry moly lube which is basically a gray-green paint that uses moly instead of pigment. Being a dry lube it doesn't attract and hold dirt like oil.
I removed all the swingarms and drilled a 3rd hole in the hull for the tail of the spring, giving the choice of low, medium, and high. After some trial and error, I found the suspension works best with the springs set as follows;
#1 (front) springs in the stock medium setting.
#2-3-4-5 springs in the new low setting.
#6 (rear) springs in the high setting.
Set up this way I find that it can now go over smaller obstacles such as 1/2" rebar very smoothly without bouncing or rocking over it, and the track will conform to uneven surfaces rather than bridge low spots. On larger hard edge obstacles like a 2X2 it transitions through the balance point in a much smoother rocking motion, rather than an abrupt pivot.
3rd hole,
I also painted all contact surfaces of the swingarms, roadwheels, return rollers, and idler wheels with CRC dry moly lube which is basically a gray-green paint that uses moly instead of pigment. Being a dry lube it doesn't attract and hold dirt like oil.
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