originally he did 0-50mph (80kph)… but was gracious enough to drop it to 40mph (64kph) for us regular folk. (i kinda feel like he did it for me… thanks heath! )
I wanted to be the next person to thrown down. but i didn’t get around to it for a while.
i tried today, but I screwed up recording telemetry on my attempts.
we inspired RedBeard (Brandon Torgeson) to go. and he put down a competitive time.
I actually think both of them can probably do even better.
I’ll definitely have a crack when I gear a higher ratio on my Race Board. Actually, now I think about it, I will probably try on current gearing too so I can compare how much of a difference it makes. Also be good to know how my Vesc based setup with outrunners compare to the Stooge approach.
Edit: Actually I have to do this on my current gear ratio otherwise I won’t hit 64km/h haha.
check out @davidbonde’s thread somewhere on this site about measuring for t-race. gopro and other standalone gps devices have 10 samples/s the phones aren’t good enough with only 1/s
@Heathlewis shows both the dead reckoning from his vesc telemetry, and gps data from the camera.
The dead reckoning is likely very accurate, if calibrated. (ie tire sizes aren’t always what they claim. ). camera gps is also fairly accurate i think but could get thrown off near buildings where gps signals get reflected. neither of these guys were near that kind of stuff.
Brandon (and myself) don’t have vescs on our race boards. so… it’s only gps available to us.
I guess that’s not 100% true, we have rpm data logged in the Mamba XLX telemetry if we pull it off before it gets wiped. but you have to connect a computer to get it. can compute speed from that like vesc does. but only post facto, and manually.
Their website pic claims 10hz GPS but also measurements within 1/100ths of a second which would mean 100hz if they were being completely honest I think, so IDK. They have been measured to be extremely accurate though, with a measured 0.15% margin of error in the quarter mile compared to official timing equipment so either way, it’s really good.
will my wallet be ok with me pulling another $160 for a drag race on top of the $200 or so i’m about to spend to repair 3 100Ds on top of the $300 or so i’m about to spend on drone parts
The RaceChrono app would be perfect for this. Needs a fast (10hz or higher) external gps. You can feed gopro gps data to the app. Phone gps are only 1hz normally.
thanks heath! )
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