lgusto

Equipment: AiM Solo 2 DL v2 / AiM SmartyCam 3 Sport / Porsche 991.1 CAN Bus Direct Wired


RaceStudio 3 shows the following data in the Toe at WGI:

Channel / Max Value

LateralAcc / 1.02 g

GPS LatAcc / 2.21 g



The SmartyCam overlay shows a max of 2.61 for GPS LatAcc.



Question: why the difference? What’s different between these three channels? A simple answer will be appreciated but learning how to find this information on my own would be invaluable.



Thanks

ProCoach

That lateral g measure (both of them) defies reason and possibility.

My first question is: Was the Solo 2 DL calibrated while connected using your online page in RS3 with the car on level ground?

Have no idea what the GPS derived lateral g is so far out other than to say that if there is a momentary drop in GPS signal can, upon reacquiring the signal, can spike.

Also, the video overlay NEVER matches the real-time information fed to it, simply due to the time it takes to render the information onto the video, in real time. Always a slight lag and some overshoot is possible. It’s there only for reference. Pull the card, open the file in RS3A and rely on the measures values more than the values shown on the video at the same point.

Matt Romanowski

The data is offset to account for the time lag. It's done in all the data files as the GPS takes time to calculate versus the other channels. The difference in video to data is Hz.

freeride

Could some of the difference be from both channels being noisy, and doesnt the Toe have a fair amount of banking? That'll make GPS lat read higher than measured lat.

ProCoach

Not close to that much more on a street car!

But yes, the confluence of noisy spikes could result in a Channel Report showing crazy values.

stellman

AIM really needs to put a "Calibrate" option in the on-device settings of the Solo2DL so you can set that while in paddock and such without having a laptop.

ProCoach

That would be a big help, but never has been an option in the last fifteen years.

lgusto

Getting ready for Sebring later this week....

Experts, should the calibration be done each time the S2DL is removed and replaced in the car, or just once? I've searched the AiM resources and can't find a straight answer. If anyone can point to one I'd appreciate it. Another great topic for an AiM AI support website.

Matt Romanowski

IFF the mount hasn't moved, then it's probably not necessary if you are just removing the S2DL. If you moved the mount at all, then you need to recalibrate it as the orientation of the S2DL in space has change. You can also look at live measures and see if the accelerometers are reading zero for lat/long and 1 for vertical. If they are not, then they need to be calibrated.