German company DeepDrive has some kinda promising tech. And the ID.Polo seems to be said to have hub motors.
Comment on 28-pound electric motor delivers 1000 horsepower
lemming741@lemmy.world 1 month agoHub motors are a party trick. They will never reach mass market.
EtzBetz@feddit.org 1 month ago
lemming741@lemmy.world 1 month ago
Not even the concept had hub motors.
www.autoexpress.co.uk/news/volkswagen-id-polo
electricarworld.com/volkswagen-polo-makes-a-comeb…
auto.hindustantimes.com/…/volkswagen-id-polo-gti-…Limited slip differential? Can’t do that with hub motors. …com.ph/…/volkswagen-id-polo-prototype-a5100-2025…
If you have different information about a production car, please share it. The theoretical concept ID.2 R may use hub motors but that is vaporware at this point.
EtzBetz@feddit.org 1 month ago
I only have german articles. I only heard it in the video source below, and they sadly don’t really say how the normal problems with hub motors would be solved even though they have a section for it in the video.
boonhet@sopuli.xyz 1 month ago
They might work in the rear if used instead of rear brakes. Rears do far less work anyway and brakes are heavy. Powerful electric motors can do a lot of regen, similarly assisting the front brakes.
SaveTheTuaHawk@lemmy.ca 1 month ago
Renault 5 RS Turbo has hub motors, Nostradamus.
lemming741@lemmy.world 1 month ago
mass market There’ll be 1,980 of these built
That car is the definition of a party trick. You proved my point, so thank you.
SaveTheTuaHawk@lemmy.ca 1 month ago
Right, because 2000 of something is not mass production.
And here is a source in China definitely not making >20 hub motors for cars, scooters, etc.
lemming741@lemmy.world 1 month ago
No, less than 2000 cars is not mass market.
To secure your order for one of the 1,980 examples of Renault 5 Turbo 3E, contact us below. You’ll get a call back very soon to make an appointment to reserve in the retailer.
Sounds very limited market.Those are golf cart and scooter motors, not suitable for highways
BMW currently uses brushed motors in their EVs so I’m not looking to them for any advice. Maybe BMW wants their traditional central layout CM450 tech. But! DeepDrive is the first hub motor I’ve seen that did not need gearing, so that is actually cool. I think they’ll be relegated to rear wheels due to scrub radius limitations but that could be ok.
brucethemoose@lemmy.world 1 month ago
Renault 5 RS Turbo
That’s because its a limited run show car. Its not meant to be practical.
kylian0087@lemmy.dbzer0.com 1 month ago
Imagine on a motorcycle… Probably nonstop wheely 🤣
KneeTitts@lemmy.world 1 month ago
Probably nonstop wheely
uni-motorcycle
lemming741@lemmy.world 1 month ago
They make sense for scooters, bikes, and other low speed or two wheel personal transport. For anything with an actual suspension (designed for a highway) there is just too much competition for space with brakes and suspension linkage. The unsprung weight, exposed high voltage cabling subject to road debris and accidents are problems too. And what to do hub motors really gain you?
SaveTheTuaHawk@lemmy.ca 1 month ago
Less weight, less parts, 4WD, 4W traction control, more cabin space because no driveshafts.
eleitl@lemmy.zip 1 month ago
Simplicity, no transmission. As to unsprung weight, designs like these have a ridiculous power density, so add only very little. Advanced suspensions are active anyway, so just part of the wheel robot.
lemming741@lemmy.world 1 month ago
They DO require transmissions! A single speed planetary gear set is still required, same as current EV drives.
Find me a hub motor datasheet with quoted power and torque below 1000 rpms. The YASA datasheets are all out to 8000 rpms. Useless at wheel speed.
They’re quoting 30 second power numbers and dry weight without a gearbox. They’re fishing for dumb money.
avidamoeba@lemmy.ca 1 month ago
They work well on bikes. I could appreciate 1000bhp hub on my 12kg touring bike. 🤭
lemming741@lemmy.world 1 month ago
I agree, they are good for minimally suspended low speed personal transport.