Detroit Truetrac

Technical

Can be fitted front or rear but please note fronts and rears are different due to the difference in preload.

When both wheels have equal traction there is minimum torque bias, equal torque will be transmitted to each wheel. In this state the diff will be unnoticed by the driver even when used in the front axle. If one wheel begins to loose traction the gears work against each other and the support case. The effect of this “inefficient” gearing is to multiply the torque on the wheel with the least grip i.e the one that is trying to spin by up to a factor of up to three to enable the wheel with grip to drive. A simple test is to have someone hold one wheel and note the effort to rotate the opposite wheel,it will take approx three times the effort. The advantages of this type of diff centre are that it is very soft in operation and virtually undetectable when driving on the road, disadvantages are, because of the way they work you need preload on the spinning wheel in order for the diff centre to bind up and transfer torque to the other wheel, in some situations such as a severe axle twister when there is no preload the Truetrac will do very little. It can be fooled into working by left foot application of the brakes to pre load the spinning wheel but really in this situation a locker is required.