RWD reduction box
Re: RWD reduction box
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!!
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SciroccoEV
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rstevens81
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Re: RWD reduction box
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.
Rule 1 of EV Club is don't buy a rust bucket....
Which rule does everyone forget
Which rule does everyone forget
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EnderWhispered
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Re: RWD reduction box
Sweet, I was thinking about reusing a sandrail transfer case for something similar... any chance this turns into a product?SciroccoEV wrote: ↑Thu Mar 21, 2024 2:28 pm Some pictures of the Felten (Zero EV) rwd gearbox internals.
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SciroccoEV
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Re: RWD reduction box
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.
It's 350Nm input and 600Nm output.
For the 2.2:1 ratio version, that means that the output torque will be the limitation.
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wjdijkstra
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Re: RWD reduction box
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
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janosch
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Re: RWD reduction box
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.
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.
New Video: