I believe traction motors still need to be cooled regardless of...

I believe traction motors still need to be cooled regardless of if they use Dyand these cooling systems are becoming more efficient too. Certainly not as simple as using less than $100 Dy to save on +$500 on cooling.

This paper describes a new Dy grain boundary-diffusion process for sintered Nd2Fe14B magnets to maximize its effect on coercivity enhancement. The new process gains an 81% reduction in Dy consumption normally required by the conventional Nd2Fe14B magnets for the equivalent performance and 17% higher remanence. The investigation into the application in an interior PM (IPM) machine for a small-sized EV traction shows that compared with the conventional Nd2Fe14B magnets, despite the relatively low coercivity, the low-Dy-content magnets still withstand the thermal and demagnetization challenge over various driving operations. In addition, with the magnet's high remanence and energy product, the machine gains significant torque and energy efficiency improvements. The analysis results are validated by a series of tests carried out on a prototype IPM machine with the new magnets.

http://eprints.whiterose.ac.uk/92036/

Like it or not, ausheds and I have been calling the demise of Dy and NTU correctly over the last 6 years. Lot more than can be said about certain NTU SH’s who spend all their time here attacking other posters. Anyone that thinks NTU building an R&D pilot plant somehow disproves what ausheds and I have been posting over the years is only fooling themselves. The R&D pilot plant will prove NTU business plan is unviable IMO.