The goal of UWL is to allow pilots to have as many options as possible. Under ideal circumstances, you would be able to use any motor. We had hoped that the RPM Limiter would help with this. And while the RPM Limiter has helped, what we noticed is that higher KV motors still had an advantage over lower KV motors, especially while turning. This is because the RPM Limiter limits the average RPMs, not the max RPMs. In theory, that shouldn't make a difference but we are seeing higher kv motors still hitting higher RPMs and feeling faster around the track. Additionally, not every "19,000kv" is created equal, and almost every motor labeled as such is actually testing at higher KV numbers than this approved list, which is the foundation of UWL.

The RPM Limiter, despite not totally eliminating motor differences in our testing, is still extremely effective for pushing motors together and making them fly more similarly. If you were to buy 20 motors, you'd find that 4 of them would test slightly higher in KV than the rest. This would (and historically has) lead to pilots over buying stock just to find the 4 motors to give themselves an advantage. This is a sort of "pay to win" scenario that the RPM Limiter eliminates.

We've done initital KV tests on pretty much every motor on the market. The current list of motors seems to be the only motors that can exist within the spec without increasing the overall speed of the spec, at least as far as using the Kaack limiter is concerned. We will be looking to move to the street league limiter for our Fall 2024 season, and we hope that at this time, the improved limiter will allow more motor options to be allowed while still preventing fair racing.