Lateral G readings

the ocho · Post by **the ocho** » Thu Jun 07, 2018 7:30 pm

I have an SCCA Solo F Modified car. It's very rigidly sprung and the two-stroke powerplant generates lots of vibration. We run on Hoosier Slicks, and everything we've seen says we pull 1.6 to 2.0 lateral G regularly (either from phone/tablet data or from Garmin Virb data).

RCP is reporting 1.2 to 1.3

Is there any way to get more reliable data from our accelerometer? Is this a hardware/mounting issue or a data averaging/smoothing issue? Even looking at Raw data - we're only seeing peaks of 1.4 to 1.5 (but in big bumps, it'll spike to 2+)

The RCP is semi-rigidly mounted to the chassis. I could probably remove the bolts and use some heavy duty velcro to give it some higher frequency isolation from the chassis if you think that would help.

the ocho · Post by **the ocho** » Fri Jun 08, 2018 3:07 pm

we're also seeing reports of 30+ degrees of body roll also... which seems a little extreme

Post by **brentp** » Tue Jun 12, 2018 3:24 pm

We have a smoothing available for the Accelerometer / Gyro, but the adjustments aren't available in the UI, yet.

I would try to much more softly mount the unit in the meantime; that should help significantly!

the ocho · Post by **the ocho** » Wed Jun 13, 2018 5:44 pm

I'll give it a try this weekend and report back - thanks Brent!

murph1379 · Post by **murph1379** » Fri Jun 22, 2018 12:10 pm

I am seeing similar results in my Formula 500 car.

The G loads may be accurate, but I am quite sure my car never hit 60* of roll. I would assume there's a decimal off in there?

Post by **brentp** » Sat Jun 23, 2018 12:41 am

Hi,

It's important to understand that the yaw sensor measures *rate of rotation* - not the actual angle of rotation. So depending on the car, you could see that reading. Also, dampening will help reduce the spike.

Hope this helps!