0.73 foot pounds of torque for the AP nag.

[timk225]

The goal was to figure out how much torque was needed for the steering column torque sensors to be happy so the nag would shut up and let autopilot work.

With a few measurements, I found that the Model 3 steering wheel was 14 inches in diameter. For a radius of 7 inches, or 0.5833 feet.

For my experimental prototype, I had a 20 ounce weight from a previous project that was able to be attached to the steering wheel with a loop of rope. And that was enough to keep the nag away. Got it right the first time. A lighter weight might be enough, but I didn't try.

20 ounces is 1.25 pounds. 1.25 lbs X 0.5833 feet torque radius = 0.73 lbs of torque on the steering wheel.

Successful experiment.

 

[ewoodrick]

And folks like this, who have to override nag, are indeed the reason why we have nag.

It's there for a purpose. Please don't override it or we will all have to pay the penalty. There has already been instances where the Feds have shot down sales of commerical products.

 

[timk225]

This is not about overriding it, this is a semi-scientific measurement of how much force is needed to make it detect that you are putting your hand on the steering wheel, because I see questions here from people often asking about how hard or easy it is to touch the wheel enough but not too much.

 

[seattlite2004]

Nice...this guy used a 2lb arm weight wrapped around the wheel:

 

[ohmman]

semi-scientific measurement

n=1 is an anecdote, and isn't even "semi" scientific. If you're truly trying to perform an experiment, you'll need to find the weights that do not stop the nag and those that do, and reproduce across vehicles and routes. I agree that this reads like "here's how to override the nag" and it's not a good look.

 

[MLKRMR]

Nag stayed away with a bag of coins at half the weight timk225 posted. Didn't try with less coins and weight yet. Not to be used in traffic, just on boring long stretches of empty road of course...