Electric sports car goes 200mi on a 10min charge

[stephen700]

Moongoddess256 said:

stephen700 said:

Note - You dont actually have any brushes on the synchronous electric motors used in new cars. - Current is sent to outer coils only (armature is Inductive or Permanent magnetic core ) -so there are no brushes.

Only part to move is the bearings which probably have a lifespan of several million kilometers.

Only the suspension suffers from any appreciable wear ( they use motor breaking so the brake pads practically never need to be used).

Tesla or any good electric vehicle is ultra low maintainance - all you need to do is recharge it each day.

 

 

Dude do you know how much your "permanent magnetic core" would cost? The answer is while I'm not sure, its A LOT.

I used to work in a motor shop for the gov't I saw a few of the new motor technologies, I also saw the price tag that came with them.

 

Those of you who are who are saying they are low maitanance and you only need to replace the brushes/bearings are very wrong. Actually, those bearings are a pain in the ass to replace you shouldn't make it seem so simple. I'd get more into it but I gotta run to work.

Yep the permanent magnet armature motors are not cheap but they are the best thats why they use them. The magnet is a specal rare earth alloy (probably around $100 worth of rare metals in it) - but the reduction in rotating mass advantage is considerable and the overall weight and power output are ideal for performance electric transport applications where weight to power is critical.

And yes it's a few hours job to replace the bearings on a small motor but the bearings will last practically forever  (1 million Km plus ) and only  2 of them.

The next step is even better - superconducting motors ! - ( US navy is experimenting with super conducting drive motors for large ships ).

Just wait for Very high temp superconductors  and electric cars will be beating nitro dragsters not just ferraris !.

An ICE motor has around 100 moving parts and dozens of bearings operating at near boiling point, and under very high vibration  !. Let me list 4 cylinders with pushrods, 2 rings each + 4* valves each + 4 return springs,guides and valve faces , roller cams and cam shaft, cam chain - though new cars use a belt) then add assemblies like injector valves,fuel pump, oil pump ,water pump, thermostat, harmonic balancer , alternator ,power steering servo. etc The modern car's internal combustion engine is a marvel of engineering but lucky to get even 45% efficiency and only able to produce peak power in a narrow rev range and needs servicing every 10000k.