Kind of like a Baconator...but not really...
Tried all sorts of gearing and different (smaller and bigger) tires. Conclusions so far, it does a pretty good job of predicting the motor kv. ie relatively constant kv back calculated from gearing, tires size, etc.
21.5 kv range 1700-1800 at stock timing (whatever that is on a Turnigy). Max timing gets it to 2000 kv.
It does NOT predict or measure motor POWER or acceleration, only top speed. But if anybody is curious about their cars top speed, try it out.
We can sort this out on Sunday before the March Maddness in two weeks.