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Joined 2 years ago
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Cake day: June 12th, 2023

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  • To my understanding EREV, like the i3 pictured in models with the optional ICE, is mostly driven on battery power with the generator as a backup. It doesn’t even provide full power when running on the generator whilst the battery is low. I don’t know of examples of EREV without a battery or with a tiny battery which would be classified as EREV but would like to see examples. I know of some studies showing lowered fuel consumption but nothing for consumers.

    I would understand your frustration towards EREV in the cases where it’s mainly burning fuel as that’s indeed not BEV at all.


  • Did not look thus up, do verify if necessary.

    EREV is a BEV with a backup engine. PHEV is mainly a combustion engine vehicle with a limited electric drivetrain bolted on.

    EREV powers a generator to drive the electric drivetrain. The electric drivetrain is the only drivetrain and must thus provide the full functionality. The intent is to drive fully electric and have an emergency backup. Markets place maxima on the amount of fuel the fuel tank may carry in some markets (eg: 10L).

    PHEV has the dino burning engine drive the wheels and an electric drivetrain. The battery can be charged. The electric drivetrain often doesn’t provide the full functionality (eg: it has too limited power and and may be limited to low speeds).




  • First off, it looks good as it is. Well done! Also, it works and that’s the important bit. Some things which help me:

    • use equality constraints instead of repeating measurements for radii and lengths
    • fillets can be added after creating the main shape, this simplifies the sketch
    • if you know this will be mirrored, draw a quarter and mirror the extruded body in part design (you could use multi-transform here)
    • use formulas, spreadsheets or reuse named distances if you want to change things later
    • make extensive use of the Part Design workbench but sometimes dabble in another workbench because when they click you’ll unlock a new set of combinations and turn FreeCAD into a sort of swiss army knife

    Congrats on your first model 👏




  • I’m in your boat but I also care about the planet. I know that not doing everything for commuters today, will mean I will not be able to enjoy my mx5 na, 944 and similar in the future.

    I think us petrolheads have a choice: make sure as much as possible is turned green or stop dreaming about true lightfooted joy on the road in the future. I’m thus very positive about electric cars because they are great for almost everyone and most fears are just not warranted. I want as many dinosaur burners as possible to be replaced as quickly as possible so 15 years down the road I can step in a Mercedes W123 or old Citroen DS and know where I am by the smell of it.

    Just about everything I drive now is electric. The first gen Model S is okay in terms of communication, even though it weighs too much it is mechanical. It is too fast to be fun. The last gen BMW i3 is zippy and quite fun to drive but many assume they need 400km range on a daily basis and it’s not that. If budget doesn’t matter, I assume a first gen Tesla Roadster should effectively be fun if you retrofit the charger, it convinced many reporters in its day. The electric drivetrain really lends itself to feeling one with the machine.

    We should have our voices heard. We want light communicative cars. But we should get as many as possible on the EV train if we want to enjoy our old toys in the future.



  • There is a standard connector which existed before big screens landed in cars, the OBD2 connector. Dongles are cheap and you can read the output from your phone or computer. Some dongles support bluetooth. The connector is mandated in some markets and I guess that makes it less interesting to add a redundant interface inside of the car. It’s fun to try if you’re interested. Manufacturers can extend the error codes IIRC.

    Tesla has a service mode on the display through which you can scan the car for faults, run a battery test, … It is password protected but the password is publicly available.





  • I agree, elections should be held fairly or should be held again. I’m not sure what to say to naysayers claiming the establishment controls the results. I also wonder how we can ensure this doesn’t get misused.

    It would be great to have broad discussions around the topic and apply these measures when things get out of hand.

    I think we must stop personalised automated (selection of) content towards end-users for anything that might be political (and possibly just anything). There could be a place for such systems if the biases and tracking can easily be controlled by end-users such that they could easily apply other points of view.