Wheel Slip Testing

One of our customers, David Simpson at LTEX, took the time to demonstrate the effectiveness of our system at increasing the lifting capacity of a locomotive compared to the OEM equipment. He took two EMD GP15 locomotives, hooked each one up to 3 six-axle locomotives, turned on the air brakes on the trailing locomotives, and took the GP15s out onto a 1/8 mile test track. One of the locomotives had a TMV TECU on it and the other still had the original OEM equipment.

As a test, it was designed to demonstrate how effective the TECU is at increasing the lifting capacity of switchers and load switchers. You can see the results in this video.

GP15 locomotives were built between 1976 and 1982. They are equipped with 1500 horsepower 12 cylinder engines.

Why is this test important? In a switching yard, small locomotives are constantly moving cars around to build a longer train (consist) and they want the power to be able to lift the train and do it effectively all day and every day. If they try to lift too much, they lose momentum and stall out. This wastes time, as they have to back up and have another go, call for help from another locomotive, or even split the train in half and make the run twice. This is especially an issue in bad weather when the rails get wet or icy and there’s less friction. As this test demonstrated, the TMV TECU significantly increases the lifting ability of the GP15, and will do the same for your diesel locomotives.

Thank you, David, for taking the time to do this work! If you are interested in leasing a locomotive with a TMV TECU installed, please contact LTEX here.