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Sounds like driving a manual, actually. You just use the brakes a lot less.

by gomox 8y ago

greglindahl 8y ago
Except with a manual, you're reducing the lifetime of your clutch, while with regenerative brakes, you're saving energy. I find that one-pedal driving makes me much more mellow: I play a game where I try to never have to use the actual brakes. Disclaimer: my first clutch lasted 120,000 miles.
- mmt 8y ago
  > Except with a manual, you're reducing the lifetime of your clutch Huh? How is engine braking (or, for that matter anything) on a fully-engaged dry clutch going to reduce its lifetime?
  - greglindahl 8y ago
    Well, that's what people tell me, and a quick google shows that the Internets have a huge debate over the issue. So I'll just say that I'm not an expert, but I still love one-pedal driving. Edit: from the huge number of downvotes my previous comment is getting, apparently many HN users think they know the answer!
    - mmt 8y ago
      The huge number of downvotes should probably indicate to you that what you stated as a matter of fact is incorrect[1]. It's not necessarily that HNers think they know, even though I'm sure we do! :), it's that it's pretty clear that you didn't know but made a statement as if you did know, with no substantiation. Sadly, as it turns out here, it was based on "some guy somewhere said", which is a much-maligned standard of knowledge on HN. BTW, I suspect the downvotes for this comment are for the combination of basically admitting that you're relying on hearsay and that, attempting to research the matter further, you were shocked (shocked!) that there were people arguing on the Internet and that was the end of the matter for you. [1] or a matter of opinion, but this is an engineering topic, which, on HN, is generally pretty comfortably treated as fact.
  - justin66 8y ago
    It won't. Unless the clutch is damaged and slipping, or slipping because your foot is resting on the pedal, it's all locked together and it's not going to wear. You will always cause a bit of wear to the clutch while shifting, but that's a different conversation. (with all the rev matching that the newest manual transmissions will do for you, I wonder if replacing clutches during the normal lifetime of a passenger car will become a thing of the past, but it's too soon to say for sure)
    - greglindahl 8y ago
      Well, if most cars become electric and have one gear, it's safe to say that your question will be answered "yes".
      - deleted 8y ago
        [deleted]
    - mmt 8y ago
      That was, essentially, my point. (Foot resting on the pedal heavily enough that it slips doesn't count as fully engaged, of course). > I wonder if replacing clutches during the normal lifetime of a passenger car will become a thing of the past My gut says that clutches wear far more from starting at a dead stop than from any gear changes in motion, so taking rev-matching out of the hands (foot) of the human won't make enough of a difference.
      - justin66 8y ago
        That's an interesting question. There's a lot more time spent slipping the clutch getting the car started, but there are higher RPMs and more power being transmitted through the partially-engaged flywheel and clutch during some of the other shifts. But yes, intuitively, it definitely feels like starting the car is when most of that wear happens, and if I had to bet I would bet that's right, at least during everyday driving.
        mmt 8y ago
  - chrisbennet 8y ago
    I play the same “game” (not using brakes). The extra clutch wear happens because you down shift to increase engine braking. You rev match (blip the throttle) so the car doesn’t jerk when you do this. I’ve got 212K miles on my original clutch (a 2007 BMW 3 series) so the wear isn’t too bad.

Sounds like driving a manual, actually. You just use the brakes a lot less.

by gomox 8y ago

Sounds like driving a manual, actually. You just use the brakes a lot less.

Except with a manual, you're reducing the lifetime of your clutch, while with regenerative brakes, you're saving energy. I find that one-pedal driving makes me much more mellow: I play a game where I try to never have to use the actual brakes. Disclaimer: my first clutch lasted 120,000 miles.

mmt 8y ago
> Except with a manual, you're reducing the lifetime of your clutch Huh? How is engine braking (or, for that matter anything) on a fully-engaged dry clutch going to reduce its lifetime?
- greglindahl 8y ago
  Well, that's what people tell me, and a quick google shows that the Internets have a huge debate over the issue. So I'll just say that I'm not an expert, but I still love one-pedal driving. Edit: from the huge number of downvotes my previous comment is getting, apparently many HN users think they know the answer!
  - mmt 8y ago
    The huge number of downvotes should probably indicate to you that what you stated as a matter of fact is incorrect[1]. It's not necessarily that HNers think they know, even though I'm sure we do! :), it's that it's pretty clear that you didn't know but made a statement as if you did know, with no substantiation. Sadly, as it turns out here, it was based on "some guy somewhere said", which is a much-maligned standard of knowledge on HN. BTW, I suspect the downvotes for this comment are for the combination of basically admitting that you're relying on hearsay and that, attempting to research the matter further, you were shocked (shocked!) that there were people arguing on the Internet and that was the end of the matter for you. [1] or a matter of opinion, but this is an engineering topic, which, on HN, is generally pretty comfortably treated as fact.
- justin66 8y ago
  It won't. Unless the clutch is damaged and slipping, or slipping because your foot is resting on the pedal, it's all locked together and it's not going to wear. You will always cause a bit of wear to the clutch while shifting, but that's a different conversation. (with all the rev matching that the newest manual transmissions will do for you, I wonder if replacing clutches during the normal lifetime of a passenger car will become a thing of the past, but it's too soon to say for sure)
  - greglindahl 8y ago
    Well, if most cars become electric and have one gear, it's safe to say that your question will be answered "yes".
    - deleted 8y ago
      [deleted]
  - mmt 8y ago
    That was, essentially, my point. (Foot resting on the pedal heavily enough that it slips doesn't count as fully engaged, of course). > I wonder if replacing clutches during the normal lifetime of a passenger car will become a thing of the past My gut says that clutches wear far more from starting at a dead stop than from any gear changes in motion, so taking rev-matching out of the hands (foot) of the human won't make enough of a difference.
    - justin66 8y ago
      That's an interesting question. There's a lot more time spent slipping the clutch getting the car started, but there are higher RPMs and more power being transmitted through the partially-engaged flywheel and clutch during some of the other shifts. But yes, intuitively, it definitely feels like starting the car is when most of that wear happens, and if I had to bet I would bet that's right, at least during everyday driving.
      - mmt 8y ago
- chrisbennet 8y ago
  I play the same “game” (not using brakes). The extra clutch wear happens because you down shift to increase engine braking. You rev match (blip the throttle) so the car doesn’t jerk when you do this. I’ve got 212K miles on my original clutch (a 2007 BMW 3 series) so the wear isn’t too bad.