Engineering Explained explains drive-by wire
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An alignment will now start at $800 versus $80
99% of guys outside the dealer can’t align current model vehicles or choose not to. what’s your point?
The point is that's an over-engineered, complex, expensive solution in search of a problem that doesn't exist.
Unless the problem it's solving is bad drivers, so the computer can take over and prevent them from doing stupid things. I might be in favor of that.
Unless the problem it's solving is bad drivers, so the computer can take over and prevent them from doing stupid things. I might be in favor of that.
My point is that the technology of how the wheels are connected to the steering yoke is not mechanical, so it requires software that likely only exists at the dealer.
As to your statement of 99% can't provide alignment service to align new cars, please site your source or admit that was pulled from a dark hole.
At the very start of the video, you can clearly see the wheels are slower than the steering wheel. So now we have another laggy system.... not unlike "throttle by wire" which does what it wants, and not what you ask of it.
I typically like good technology, and I am satisfied with the redundancy. However, there is no way on Earth I want a system that does not give the same result for each steering input. Simple example: 20 degrees of wheel movement should, every time, turn the front wheels 4 degrees (roughly as left and right tires turn different amounts)
And god forbid the computer says "no"...... like happened here:
I typically like good technology, and I am satisfied with the redundancy. However, there is no way on Earth I want a system that does not give the same result for each steering input. Simple example: 20 degrees of wheel movement should, every time, turn the front wheels 4 degrees (roughly as left and right tires turn different amounts)
And god forbid the computer says "no"...... like happened here:
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Later in the video, Jason brings up that very point and diagrams it. And at 10:56 he talks about this delay in specific driving situations. All that said, the car Jason was driving is a pre-production prototype. BTW, I like the styling of the car quite a bit.
The idea the DBW (Drive By Wire) steering frees up the packaging of the steering and allows more freedom and certain benefits wrt interior design, visibility, and comfort, is a definite plus.
Sweetie's Prius had an early version of electric steering, and I found it annoying and lacking a good connection to the road. Later versions were much improved. I'd like to think that this DBW feature will have some of its problems resolved before it finally gets to the market.
More and more, as cars add technology, I'm liking my older Camry more.
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Electric steering was around years before any Prius was.
Whatever its other faults, it wasn't laggy like we see in that Lexus. Surely they'll fix that in production.
When was the advent of electric steering, and in what circumstance?
Since Sweetie had an early Prius, she must have had an early version for the Prius, which, from my own experience, was later improved upon. Later Prius had a better road feel and didn't feel nearly as vague. It felt more connected to the road is the best way that I can describe it.
I'm sure later versions of DBW steering will be improved.
Again Tesla designed a garbage implementation of steering and another company figured it out. The odd thing is that Jason Fenske owns a Tesla. Actually his third. The first model 3 was delivered but the paint, overspray and bodywork were unacceptable. The second he wasn't impressed with. The third awd he said customer service has degraded tremendously.
My wife's Mazda 5 is a DBW Car and feels great. A couple times since we have owned it 9 years now, it would take off faster than intended but that's not really a big problem. I did a re-calibration of the gas pedal and it has not done that again. We just love that little car and hope it lasts forever. Very simple to repair and it even has a transmission dipstick. Haven't had any big repairs in 145K. Back door switch has been the worst problem so far.
Forgot to say that it is a 2012 Mazda 5.
This thread started about steering, however...
My 2014 Mazda 3 has DBW throttle and the position mapping is nicely done from the factory - linear. It's not like my wife's Subaru, which gives 80% of the throttle in the first 25% of pedal movement. I hate that. I assume they do it to make the car seem more powerful than it really is, but it's terrible for daily driving; I prefer a linear mapping.
The only thing wrong with my Mazda 3 throttle is rev hang, and that's not Mazda's fault. The EPA forces them to do it for emissions. At least its rev hang isn't as bad as in other cars.
Question: how did you re-calibrate the gas pedal in your Mazda 5?
Not laggy in the sense that the steering wheel and tires don't match position. But certainly laggy with regard to steering fast. Many early electric steering racks had maximum steering wheel rotational speeds, often considerably slower than legend systems. There was a point at which you could not turn the steering wheel any faster. And sadly, it was preventing counter-steer during a slide and causing accidents.
"Laggy" means the wheel angle was not keeping up with the corresponding steering wheel angle, as seen in the video in this thread. Limited "maximum steering wheel rotational speed" was also a problem with hydraulic systems, especially when the engine was idling. Reviewers in car magazines often complained about that, after doing a slalom with idling engine.
For MRCR1, I did a calibration with my diagnostic tool from Harbor frei. It just has you push the pedal to the floor and slowly take your foot off the pedal.ght. I have their most expensive model and it has the procedure in the adjustments
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