Donut Lab and the electric motors everyone has been talking about
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I thought a big problem with these types of wheels was dealing with the added unsparing mass?
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I have never talked about it
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I have never talked about it
Well we've been actively excluding you from this incredibly exciting conversation about electric motors.
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They're missing a category for ebikes. Larger and lighter than their scooter motor, but doesn't need to hit 15kw. 3-5kw is plenty. Drone motor doesn't have enough torque for ebikes.
The main reason these motors are so powerful is entirely about high surface area allowing for cooling. For ebikes could have fat tire format but with added fairly thin mag wheel spokes, that allow for high range gear cassettes, or just placing into traditional frame designs.
The smallest 3kw motor could likely be used on ebikes. If that's not enough just add another motor for 6kw, and that's more than enough for an ebike.
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The smallest 3kw motor could likely be used on ebikes. If that's not enough just add another motor for 6kw, and that's more than enough for an ebike.
The scooter motor is too small in diameter. Power and torque are awesome/too high though. The drone motor is way too low on torque.
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Well we've been actively excluding you from this incredibly exciting conversation about electric motors.
Can confirm
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I have never talked about it
Well, you have now.
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I thought a big problem with these types of wheels was dealing with the added unsparing mass?
Unsprung*. They partially address it in the article.
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Unsprung*. They partially address it in the article.
That won't be a problem with these motors. "We call it the infinite motor because it will outlast the life of the vehicle when done right,"
You're being very generous.
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I thought a big problem with these types of wheels was dealing with the added unsparing mass?
I don't think the article addressed it directly, but it seems like it's improved due to being lighter weight with more torque and offset by not needing axles or gearing since it can be mounted in the wheel. It says they weigh 40kg, which isn't too bad compared to axles and gearboxes in my experience with ICE vehicles.
I'm curious how this holds up to things like potholes and minor fender benders if it's integrated in the wheel. Imagine hitting a huge pothole or a curb and not only having to replace a wheel, control arms, hub, ball joints, etc but also an entire electric motor.
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I don't think the article addressed it directly, but it seems like it's improved due to being lighter weight with more torque and offset by not needing axles or gearing since it can be mounted in the wheel. It says they weigh 40kg, which isn't too bad compared to axles and gearboxes in my experience with ICE vehicles.
I'm curious how this holds up to things like potholes and minor fender benders if it's integrated in the wheel. Imagine hitting a huge pothole or a curb and not only having to replace a wheel, control arms, hub, ball joints, etc but also an entire electric motor.
Are gearboxes typically unsprung? I was under the impression that the flex from the CV joints sorta disconnects much of the drivetrain from the wheels and it's instead connected more rigidly to the body
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Are gearboxes typically unsprung? I was under the impression that the flex from the CV joints sorta disconnects much of the drivetrain from the wheels and it's instead connected more rigidly to the body
Not in an ICE vehicle, but I may be under the false impression that some EVs use gear reduction after the motors, similar to how portal axles are set up. If that's not the case, then you're right it would just be the CV axles that are removed which don't weigh quite as much.
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Not in an ICE vehicle, but I may be under the false impression that some EVs use gear reduction after the motors, similar to how portal axles are set up. If that's not the case, then you're right it would just be the CV axles that are removed which don't weigh quite as much.
It's more of a power unit thingy, for at least Teslas and Mercs. The motor(s) and gearing are in one big box that sits on the subframe(?)
Here's an article with a photo. Tesla having such a large cult following, means it's slightly easier to find than other brands' EVs' drivetrains, but I'm sure they've mostly figured out the same solution.
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