23/10/2026
I got the chance to run a Wind Horse 3C scooter up and down the taxiway recently, so I opened up the free "G-Field Recorder" app on my i-Phone and set it on the deck near my feet. This app makes step-stairs in the chart by getting a speed from GPS, and then repeats it for a second until a new value comes in. I've deleted all the extra duplicated stale data values, leaving just the dots of 1-Hz "fresh data". The GPS data lags the accelerometer data, but generally agrees with accelerometer data: Specifically, both show a rear-brake skidding stop on dry pavement at about -0.32g.
This 61-pound beasty has a front disc brake that was pretty wimpy. My couple runs did not reveal it as improving much on rear skidding. The weight distribution with my 175 pounds on the pedestal seat was 77lb front/ 159lb rear (33%/67%), so no surprise the front brake wasn't helping much really.
Anyway, this testing took me about 12 minutes, the data analysis and writeup took perhaps 2.5 hours. It was fun. I did not research if this has any hacks to override the speed setting, or if they simply geared it to match the motor at top speed. The really gentle slope change in Mode 3 appears like there's not much more in reserve.
The scooter has 3 power modes. The max speed in each was pretty close to the advertised values. The acceleration rate was the same for all 3 modes, but simply tapered off as the machine approached the rated speed.
Speed reads on the right side scale. The blue acceleration trace reads on the left, and is only included where there was something interesting to see: Early on a shade over 0.1g. The GPS looks to lag somewhat in reporting, but seems pretty good otherwise.
Peace. -W
