IMSA considering implementing torque sensors in GTD classes

From the beginning of the the current-era GTP class, IMSA and FIA have used torque sensors — collars on the LMDh cars’ halfshafts to measure power and energy output. For next season, in order to add to the data they already are using to set Balance of Performance, the series is considering implementing similar technology in the GT categories as well.

“In 2025, we’re looking at some significant technical regulation changes for the GTD and GTD PRO classes with the introduction of torque sensors, similar to what’s been done in LMGT3,” said Matt Kurdock, IMSA’s senior technical director, during a media roundtable discussion on the Balance of Performance process. “I think the opportunity to not only make sure that the technology is integrated correctly with IMSA’s electronics in the car, but to also get some sample data on the cars in controlled conditions, is something that we would very much like to do. But we’re still checking on feasibility of doing that.”

The FIA is using torque sensors on the LMGT3 cars that were introduced to the World Endurance Championship this season, and as the two series and ACO are working to implement convergence of the rules, it seemed likely that IMSA would follow. The sensors would not only supply additional data to the series, but could also be used to implement things like virtual energy in a stint, as exists in GTP.


“That is something we’re working with the GTD manufacturer group right now, is pushing forward to work on updating the technical regulations with that equipment,” Kurdock explained. “I think we’ve had a very positive experience with it in GTP — not only in the ability to control power, with a common methodology and a common measurement, but also to implement things like virtual energy, which allows for, we believe, better competitive equivalency between the different power train architectures and the ability to to basically get more equivalency on giving up pace for gaining stint length.”

Story originally appeared on Racer