pitch and roll sensors - and leveling

[ShadowsPapa]

Maybe not the correct spot for this but it's sort of general.
I'm referring more to PITCH.
Example - say you have an Overland which comes with a lot of rake, and you want to level it. What's the rake, a degree? More? Less?
So you level it and it sits with basically no rake.
Here's the question - the vehicle can display pitch and roll.
How does it sense those?
If there was some sort of simple bubble level in there that you looked at, and it was calibrated to show level with the factory rake, taking the rake out would make it display that you had some pitch - and yet you don't.
So how do the sensors on these work, and how can they display 0 pitch factory on level ground and then still show 0 pitch after you take the rake out of the truck?
(I am NOT leveling my truck, but it made me curious since I did raise the front of mine with Rubicon springs and the max tow springs in the back left the rear unchanged so I did take out a tiny bit of rake)

If you went up a small hill, the pitch display would show 1 degree, just for example, but if you put spacers under the front of the truck and not the back, it's the same effect - so would the pitch display always show you were not level after installing a leveling kit?

OR, are these gauges not really all that accurate so raising the front of the truck 1 degree with a leveling kit wouldn't even show on the gauges?

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[bleda2002]

Maybe not the correct spot for this but it's sort of general.
I'm referring more to PITCH.
Example - say you have an Overland which comes with a lot of rake, and you want to level it. What's the rake, a degree? More? Less?
So you level it and it sits with basically no rake.
Here's the question - the vehicle can display pitch and roll.
How does it sense those?
If there was some sort of simple bubble level in there that you looked at, and it was calibrated to show level with the factory rake, taking the rake out would make it display that you had some pitch - and yet you don't.
So how do the sensors on these work, and how can they display 0 pitch factory on level ground and then still show 0 pitch after you take the rake out of the truck?
(I am NOT leveling my truck, but it made me curious since I did raise the front of mine with Rubicon springs and the max tow springs in the back left the rear unchanged so I did take out a tiny bit of rake)

If you went up a small hill, the pitch display would show 1 degree, just for example, but if you put spacers under the front of the truck and not the back, it's the same effect - so would the pitch display always show you were not level after installing a leveling kit?

OR, are these gauges not really all that accurate so raising the front of the truck 1 degree with a leveling kit wouldn't even show on the gauges?

I was noticing that yesterday after taking about half the rake of the truck out it's still 0 on mine as well. Had the same thoughts about how accurate it is then.

I know when I went on a trail ride with a few other jls our angle measurements were all off about 1 degree from each other, for example jl one would show 25 I'd show 26 jl two 27. Makes me think it's just not "that" sensitive

 

[villageregular]

That’s a very interesting question. I’m guessing here and haven’t thought this through carefully but I think it’s an electronic gyroscope in the radio or gauge cluster. If that aligns correctly with the axel then removing the rake won’t significantly alter the gyroscopes reading because it’s at the cars pivot point in the front. If the sensor was at the back of the truck for example, then it would have a greater effect on the pitch reading.

Think of a boat, you feel the waves and changes the most at the edges of the boat but not as much in the center.

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