openinverter forum

I would also be interested in the cost for this to the US. Working a conversion project and have the EM57...no gearbox, but that's obtainable. I also have a full machine shop at my disposal but certainly would love to use something already made verses going my own. Really great to see this kind of stuff being made!!

Some pictures of the Felten (Zero EV) rwd gearbox internals.

SciroccoEV wrote: ↑Thu Mar 21, 2024 2:28 pm Some pictures of the Felten (Zero EV) rwd gearbox internals.

Do you feel under-whelmed witch parting lost of £££ for that?

SciroccoEV wrote: ↑Thu Mar 21, 2024 2:28 pm Some pictures of the Felten (Zero EV) rwd gearbox internals.

Sweet, I was thinking about reusing a sandrail transfer case for something similar... any chance this turns into a product?

I found some more data on the torque rating of this gearbox.

It's 350Nm input and 600Nm output.

For the 2.2:1 ratio version, that means that the output torque will be the limitation.

janosch wrote: ↑Fri Sep 01, 2023 12:17 pm Taxis ran 20k+ miles, no problems with it. I sent you a PM. Need to figure out shipping to where you are & find out the price for you.

Hi Janosch, I tried to pm you but the message seems to be stuck in the outbox. I'm also interested in the above, how can I contact you?
Regards,
Willem Jacob

Recently got asked by a family friend: Do electric cars even need gears?

I thought this was an great opportunity to stick my head out of Stephens Porsche, and record my answer to the question as a video:

The question is excellent, because many people think you can just skip the transmission altogether and drive the wheels directly from the motor, but that is not the best solution. A gas car will have five gears, a big truck maybe even ten. This is to match the speed and torque as good as possible. Even though electric motors have a lot more torque than petrol engines, it still makes sense to have a reduction gear with them.

The reversal: You could build a big petrol engine that does not need a transmission and has all the torque ready to get the car moving, but that would be expensive, wasteful and costly, you would end up with tractor like engines sticking out of the bonnet of your car.

Much better to pair a much "smaller" (can still be a V6 or v12) engine with a gearbox reduction. This is what every auto manufacturer does, no matter if
electric or not. The simplification with EVs is that you only need one gear, so it is not operated by the user anymore.

Check the video below where I go through this with animations.