6 ms·

I wonder if some of this is to do with weight reduction. To have seperate buses must add a lot of extra equipment and wiring. This means more weight and more p

I wonder if some of this is to do with weight reduction. To have seperate buses must add a lot of extra equipment and wiring. This means more weight and more power required to operate the electrics and in turn means lower MPG, higher fuel consumption and a more expensive car to design and manufacture. The net outcome is a less competitive car in a competitive market.

swirepe 8y ago
It looks like a CAN bus hub weights about a pound. That's negligible, considering I have about twice that weight in garbage sitting in my cup holders. [1]: https://www.autozone.com/electrical-and-lighting/can-bus-hub/msd-can-bus-hub/500411_0_0 https://www.autozone.com/electrical-and-lighting/can-bus-hub...
- sitkack 8y ago
  How much does death weigh?
  - perilunar 8y ago
    -21 grams apparently /s
retbull 8y ago
I mean "a lot" in computer terms is like 4 lbs of equipment but since the brake pads on a truck weigh in at more than that I assume its not weight related.
crististm 8y ago
This begs the question: how do you know this is true?
- frankharv 8y ago
  Well JD Power listed Fords MyTouch as the biggest customer complaint of 2011[0]. I think customers might know how messed up their car is. [0]https://wheels.blogs.nytimes.com/2011/06/23/aggravating-myford-touch-sends-ford-plummeting-in-j-d-power-quality-survey/ https://wheels.blogs.nytimes.com/2011/06/23/aggravating-myfo...
  - crististm 8y ago
    My post makes no sense. I replied to the wrong parent
- deleted 8y ago
  [deleted]
chucky 8y ago
I've worked with software engineers working on the CAN bus, and I had the same questions as you. According to them it has to do with the amount of cabling needed as well as electrical interference. A car has a lot of cabling going all over (a couple of hundred meters in total was the number I got), and if you can put as much of it as possible on the same bus(es), you save yourself a lot of problems. So I suppose weight could be a factor, but space seems to be the big one.
- irrational 8y ago
  Well the obvious solution it to go wireless! What could possibly go wrong?

swirepe 8y ago

It looks like a CAN bus hub weights about a pound. That's negligible, considering I have about twice that weight in garbage sitting in my cup holders. [1]: https://www.autozone.com/electrical-and-lighting/can-bus-hub/msd-can-bus-hub/500411_0_0 https://www.autozone.com/electrical-and-lighting/can-bus-hub...

sitkack 8y ago
How much does death weigh?
- perilunar 8y ago
  -21 grams apparently /s

retbull 8y ago

I mean "a lot" in computer terms is like 4 lbs of equipment but since the brake pads on a truck weigh in at more than that I assume its not weight related.

crististm 8y ago

This begs the question: how do you know this is true?

frankharv 8y ago
Well JD Power listed Fords MyTouch as the biggest customer complaint of 2011[0]. I think customers might know how messed up their car is. [0]https://wheels.blogs.nytimes.com/2011/06/23/aggravating-myford-touch-sends-ford-plummeting-in-j-d-power-quality-survey/ https://wheels.blogs.nytimes.com/2011/06/23/aggravating-myfo...
- crististm 8y ago
  My post makes no sense. I replied to the wrong parent
deleted 8y ago
[deleted]

chucky 8y ago

I've worked with software engineers working on the CAN bus, and I had the same questions as you. According to them it has to do with the amount of cabling needed as well as electrical interference. A car has a lot of cabling going all over (a couple of hundred meters in total was the number I got), and if you can put as much of it as possible on the same bus(es), you save yourself a lot of problems. So I suppose weight could be a factor, but space seems to be the big one.

irrational 8y ago
Well the obvious solution it to go wireless! What could possibly go wrong?