6 ms·

What freaks me out is the transition to electric handbrake. That thing was meant to be manual, no electricity, nothing, ever.

by pmlnr 3y ago

FredPret 3y ago
Electric can be more reliable than hydraulic
- endocrinecheese 3y ago
  Yeah but this is about emergency brakes which are/were cable driven mechanically.
  - kube-system 3y ago
    Cables are probably the least reliable way of actuating brakes. They're very sensitive to corrosion and debris. After 20 years it is not uncommon for them to stretch, bind, or snap.
    - endocrinecheese 3y ago
      Maybe if you live in the rust belt. They are shielded from the weather and are coated in corrosion inhibitors. They should be inspected and adjusted when the brakes are serviced. You’re not wrong in that they can be sensitive to corrosion and dirt, but to say they’re least reliable for an e-brake is not correct. Even the electric e-brakes use cables. Is there another type of e-brake besides line locks and cables on regular cars? I’ve only messed with a few cars with electronic e-brakes and most everything else I’m experienced with is pre 2005. Have they cheaped out on the cables now?
      - kube-system 3y ago
        The only electronic parking brakes I've had experience with have the motor right on the caliper. e.g. https://data.embeddedcomputing.com/uploads/resize/1256/756/external/data.embeddedcomputing.com/uploads/articles/wp/346231482/586bddf207780-main-qimg-5798e1617e762a971a387a34eb3ae393-c.jpg https://data.embeddedcomputing.com/uploads/resize/1256/756/e... And FWIW, a quick image search for 'electronic parking brake' only shows this style.
        endocrinecheese 3y ago
        I haven’t worked on those before, I did a Subaru that had an electric motor with cables going to the calipers. Lots of adjusting cables on old stuff but almost never have to replace cables, just adjust them. Had to replace a lot of throttle and clutch cables though.
graypegg 3y ago
Wait… really? Handbrake as in the parking/emergency brake? I thought it was still physically connected (hydraulic or cable) to some disc brakes as standard? I also don’t drive so maybe that’s changed in new cars? That’s horrifying if so.
- blamazon 3y ago
  Yes, that handbrake. You can likely still find the hydraulic or cable operated ones on low-cost automobiles, but new cars (at least in USA) almost universally have a little button to electrically enable the parking brake. In more advanced cars with an automatic transmission these electric parking brakes are automatically enabled and disabled when switching into park and drive mode. In the USA this change to electric parking brakes was hastened by most people just not using the parking brake at all, instead just putting the car into "park" on the transmission. Many experienced drivers I know in USA do not know what a parking brake is or how to use it.
  - kjkjadksj 3y ago
    When I drove a stick even I hardly used the parking brake. If its flat ground keeping it in gear or in park is fine.
    - graypegg 3y ago
      Yeah unless you live in a very hilly place it probably isn’t used too often. But it’s also the “I don’t care about what happens, stop the car NOW” brake in my head. “E-brake” is what I learned it as. I’m surprised people are ok with that being on the same drive-by-wire system as the standard brake.
      - kjkjadksj 3y ago
        Ebrake isn't really that strong to be fair. You can still drive with it engaged. Probably bad to rely on it in an emergency given it has no abs.
kristjansson 3y ago
That’s been going on for a while? My car is a 2013 and has an electric handbrake.
1970-01-01 3y ago
>That thing was meant to be manual, no electricity, nothing, ever. It was? Who decided this? It wasn't SAE.
fnord77 3y ago
yes, no more handbrake drifting though with electric brakes there's no longer a long wire cable that can break (happens in the rust belt) Also, pulling the electronic-brake in an emergency won't lock the back wheels like a handbrake can. The car will come to a controlled stop

What freaks me out is the transition to electric handbrake. That thing was meant to be manual, no electricity, nothing, ever.

by pmlnr 3y ago

What freaks me out is the transition to electric handbrake. That thing was meant to be manual, no electricity, nothing, ever.

FredPret 3y ago

Electric can be more reliable than hydraulic

endocrinecheese 3y ago
Yeah but this is about emergency brakes which are/were cable driven mechanically.
- kube-system 3y ago
  Cables are probably the least reliable way of actuating brakes. They're very sensitive to corrosion and debris. After 20 years it is not uncommon for them to stretch, bind, or snap.
  - endocrinecheese 3y ago
    Maybe if you live in the rust belt. They are shielded from the weather and are coated in corrosion inhibitors. They should be inspected and adjusted when the brakes are serviced. You’re not wrong in that they can be sensitive to corrosion and dirt, but to say they’re least reliable for an e-brake is not correct. Even the electric e-brakes use cables. Is there another type of e-brake besides line locks and cables on regular cars? I’ve only messed with a few cars with electronic e-brakes and most everything else I’m experienced with is pre 2005. Have they cheaped out on the cables now?
    - kube-system 3y ago
      The only electronic parking brakes I've had experience with have the motor right on the caliper. e.g. https://data.embeddedcomputing.com/uploads/resize/1256/756/external/data.embeddedcomputing.com/uploads/articles/wp/346231482/586bddf207780-main-qimg-5798e1617e762a971a387a34eb3ae393-c.jpg https://data.embeddedcomputing.com/uploads/resize/1256/756/e... And FWIW, a quick image search for 'electronic parking brake' only shows this style.
      - endocrinecheese 3y ago
        I haven’t worked on those before, I did a Subaru that had an electric motor with cables going to the calipers. Lots of adjusting cables on old stuff but almost never have to replace cables, just adjust them. Had to replace a lot of throttle and clutch cables though.

graypegg 3y ago

Wait… really? Handbrake as in the parking/emergency brake? I thought it was still physically connected (hydraulic or cable) to some disc brakes as standard? I also don’t drive so maybe that’s changed in new cars? That’s horrifying if so.

blamazon 3y ago
Yes, that handbrake. You can likely still find the hydraulic or cable operated ones on low-cost automobiles, but new cars (at least in USA) almost universally have a little button to electrically enable the parking brake. In more advanced cars with an automatic transmission these electric parking brakes are automatically enabled and disabled when switching into park and drive mode. In the USA this change to electric parking brakes was hastened by most people just not using the parking brake at all, instead just putting the car into "park" on the transmission. Many experienced drivers I know in USA do not know what a parking brake is or how to use it.
- kjkjadksj 3y ago
  When I drove a stick even I hardly used the parking brake. If its flat ground keeping it in gear or in park is fine.
  - graypegg 3y ago
    Yeah unless you live in a very hilly place it probably isn’t used too often. But it’s also the “I don’t care about what happens, stop the car NOW” brake in my head. “E-brake” is what I learned it as. I’m surprised people are ok with that being on the same drive-by-wire system as the standard brake.
    - kjkjadksj 3y ago
      Ebrake isn't really that strong to be fair. You can still drive with it engaged. Probably bad to rely on it in an emergency given it has no abs.

kristjansson 3y ago

That’s been going on for a while? My car is a 2013 and has an electric handbrake.

1970-01-01 3y ago

>That thing was meant to be manual, no electricity, nothing, ever. It was? Who decided this? It wasn't SAE.

fnord77 3y ago

yes, no more handbrake drifting though with electric brakes there's no longer a long wire cable that can break (happens in the rust belt) Also, pulling the electronic-brake in an emergency won't lock the back wheels like a handbrake can. The car will come to a controlled stop